Cross-listings

gr-qc/0603058 [abs, ps, pdf, other] :: Title: Spherical Solutions in Einstein-Aether Theory: Static Aether and Stars
Authors: Christopher Eling, Ted Jacobson
Comments: 24 pages, 5 figures

The time independent spherically symmetric solutions of General Relativity (GR) coupled to a dynamical unit timelike vector are studied. We find there is a three-parameter family of solutions with this symmetry. Imposing asymptotic flatness restricts to two parameters, and requiring that the aether be aligned with the timelike Killing field further restricts to one parameter, the total mass. These "static aether" solutions are given analytically up to solution of a transcendental equation. The positive mass solutions have spatial geometry with a minimal area 2-sphere, inside of which the area diverges in a finite proper distance at a curvature singularity occurring at an extremal Killing horizon. Regular perfect fluid star solutions are shown to exist with static aether exteriors, and the range of stability for constant density stars is identified.
gr-qc/0604081 [abs, ps, pdf, other] :: Title: Second Order Gauge-Invariant Perturbations during Inflation
Authors: F. Finelli, G. Marozzi, G.P. Vacca, G. Venturi
Comments: 16 pages, 6 figures

The evolution of gauge invariant second-order scalar perturbations in a general single field inflationary scenario are presented. Different second order gauge invariant expressions for the curvature are considered. We evaluate perturbatively these second order curvature fluctuations during the slow-roll stage of a massive chaotic inflationary scenario, taking into account the deviation from a pure de Sitter evolution and considering only the contribution of super-Hubble perturbations in mode-mode coupling. The spectra resulting from their contribution to the second order quantum correlation function have a nearly scale-invariant spectrum, with logarithmic corrections of higher power than those of the first order spectrum. The amplitude of these spectra depend on the total number of e-folds. We find, on comparing first and second order perturbation results, an upper limit to the total number of e-folds beyond which the two orders are comparable.
hep-th/0604126 [abs, ps, pdf, other] :: Title: Tensor Modes from a Primordial Hagedorn Phase of String Cosmology
Authors: Robert H. Brandenberger, Ali Nayeri, Subodh P. Patil, Cumrun Vafa (McGill and Harvard)

It has recently been shown that a Hagedorn phase of string gas cosmology can provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the need for an intervening period of de Sitter expansion. In this paper we compute the spectrum of tensor metric fluctuations (gravitational waves) in this scenario, and show that it is also nearly scale-invariant. However, whereas the spectrum of scalar modes has a small red-tilt, the spectrum of tensor modes has a small blue tilt, unlike what occurs in slow-roll inflation. This provides a possible observational way to distinguish between our cosmological scenario and conventional slow-roll inflation.

Replacements

astro-ph/0506615 [abs, ps, pdf, other] :: Title: The distribution and kinematics of early high-sigma peaks in present-day haloes: implications for rare objects and old stellar populations
Authors: Juerg Diemand (1,2), Piero Madau (1), Ben Moore (2), ((1) University of California, Santa Cruz, (2) University of Zurich)
Comments: 19 pages, 12 figures, matches the published version. Increased line-width of plots for better reproduction. A version with higher resolution figures is available at this http URL
Journal-ref: Mon.Not.Roy.Astron.Soc. 364 (2005) 367-383
Note: replaced with revised version Thu, 20 Apr 2006 23:40:49 GMT (580kb)
astro-ph/0508345 [abs, ps, pdf, other] :: Title: An Analytic Approach to the Polarization of the Cosmic Microwave Background Generated by Relic Gravitational Waves
Authors: Wen Zhao, Yang Zhang
Comments: 35 pages, 16 figures
Note: replaced with revised version Fri, 21 Apr 2006 06:11:10 GMT (458kb)
astro-ph/0510356 [abs, ps, pdf, other] :: Title: The State Equation of the Yang-Mills field Dark Energy Models
Authors: Wen Zhao, Yang Zhang
Comments: 14 pages, 4 figures. Class.Quant.Grav. accepted
Note: replaced with revised version Fri, 21 Apr 2006 06:08:52 GMT (104kb)
astro-ph/0511617 [abs, pdf] :: Title: Underwater Acoustic Detection of Ultra High Energy Neutrinos
Authors: V. Niess, V. Bertin
Comments: 15 pages, 11 figures
Note: replaced with revised version Fri, 21 Apr 2006 09:31:48 GMT (335kb)
astro-ph/0512214 [abs, ps, pdf, other] :: Title: The nature of turbulence in OMC1 at the star forming scale: observations and simulations
Authors: M. Gustafsson (Aarhus), A. Brandenburg (Nordita), J.L. Lemaire (Meudon), D. Field (Aarhus)
Comments: 12 pages, 8 figures, accepted A&A. Revised in response to referee. For higher resolution, see this http URL
Note: replaced with revised version Fri, 21 Apr 2006 08:43:22 GMT (864kb)
astro-ph/0512422 [abs, ps, pdf, other] :: Title: Isolating the decay rate of cosmological gravitational potential
Authors: Pengjie Zhang (SHAO)
Comments: 5 pages, 3 figures. Accepted to ApJ. Added more discussions and presented more detailed explanation of a key formula used in the paper
Note: replaced with revised version Fri, 21 Apr 2006 01:50:17 GMT (23kb)
astro-ph/0601367 [abs, ps, pdf, other] :: Title: The Great Observatories Origins Deep Survey VLT/FORS2 Spectroscopy in the GOODS-South Field: Part II
Authors: E. Vanzella, S. Cristiani, M. Dickinson, H. Kuntschner, M. Nonino, A. Rettura, P. Rosati, J. Vernet, C. Cesarsky, H. C. Ferguson, R.A.E. Fosbury, M. Giavalisco, A. Grazian, J. Haase, L. A. Moustakas, P. Popesso, A. Renzini, D. Stern, the GOODS Team
Comments: 15 pages, 15 figures; accepted for publication in Astronomy & Astrophysics. Version with full resolution figures available at this http URL
Note: replaced with revised version Fri, 21 Apr 2006 11:39:46 GMT (791kb)
astro-ph/0601445 [abs, ps, pdf, other] :: Title: Microwave sky and the local Rees-Sciama effect
Authors: Aleksandar Rakic, Syksy Rasanen, Dominik J. Schwarz
Comments: 6 pages, 2 figures, 2 tables; v3: references added, presentation improved; Supplementary material at this http URL
Note: replaced with revised version Fri, 21 Apr 2006 15:15:48 GMT (46kb)
astro-ph/0601530 [abs, ps, pdf, other] :: Title: A Braking Index for the Young, High-Magnetic-Field, Rotation-Powered Pulsar in Kes 75
Authors: Margaret A. Livingstone, Victoria M. Kaspi, E. V. Gotthelf, Lucien Kuiper
Comments: Includes major changes to analysis. Updated postion used for the pulsar which significantly changed the result and conclusions of the paper. 21 pages, 6 Figures. ApJ submitted
Note: replaced with revised version Fri, 21 Apr 2006 19:38:51 GMT (42kb)
astro-ph/0601695 [abs, ps, pdf, other] :: Title: The Cumulative Bakground of High-Energy Neutrinos from Starburst Galaxies
Authors: Abraham Loeb, Eli Waxman
Comments: Accepted for publication in JCAP
Note: replaced with revised version Fri, 21 Apr 2006 10:37:04 GMT (15kb)
astro-ph/0602488 [abs, ps, pdf, other] :: Title: The rp-Process in Neutrino-driven Winds
Authors: Shinya Wanajo (Univ. of Tokyo)
Comments: 29 pages, 18 figures, submitted to ApJ, referee's advices are included
Note: replaced with revised version Fri, 21 Apr 2006 17:38:29 GMT (418kb)
astro-ph/0603198 [abs, ps, pdf, other] :: Title: Mid-Infrared Identifications of SCUBA Galaxies in the CUDSS 14-Hour Field with the Spitzer Space Telescope
Authors: M. L. N. Ashby (1), S. Dye (2), J.-S. Huang (1), S. Eales (2), S. P. Willner (1), T. M. A. Webb (3), D. Rigopoulou (4), E. Egami (5), H. McCracken (6), S. Lilly (7), S. Miyazaki (8), M. Brodwin (9), M. Blaylock (5), J. Cadien (5), G. G. Fazio (1) ((1) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, (2) School of Physics and Astronomy, Cardiff University, UK (3) McGill University, Montreal, CA (4) Department of Astrophysics, Oxford University, UK, (5) Steward Observatory, University of Arizona, Tucson, AZ, (6) Institute d'Astrophysique, Paris, FR, (7) Swiss Federal Institute of Technology Zurich, SW, (8) National Astronomical Observatory of Japan, (9) Jet Propulsion Laboratory, Pasadena, CA)
Comments: 36 pages, 9 figures, accepted by the Astrophysical Journal. This version corrects the bibliography and typographical errors in the text and table 1
Note: replaced with revised version Fri, 21 Apr 2006 17:38:10 GMT (645kb)
astro-ph/0603495 [abs, ps, pdf, other] :: Title: Supernova 2006aj and the associated X-Ray Flash 060218
Authors: J. Sollerman (1,2), A. O. Jaunsen (3), J. P. U. Fynbo (1), J. Hjorth (1), P. Jakobsson (1), M. Stritzinger (1), C. Feron, P. Laursen, J.-E. Ovaldsen, J. Selj, C. C. Thöne, D. Xu, T. Davis, J. Gorosabel, D. Watson, R. Duro, I. Ilyin, B. L. Jensen, N. Lysfjord, T. Marquart, T. B. Nielsen, J. Näränen, H. E. Schwarz, S. Walch, M. Wold, G. Östlin ((1) Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Denmark (2) Stockholm Observatory, Sweden (3) Institute of theoretical astrophysics, Oslo, Norway)
Comments: Accepted by A&A. Replaced with revised version. More observations added
Note: replaced with revised version Fri, 21 Apr 2006 12:58:01 GMT (104kb)
astro-ph/0603839 [abs, ps, pdf, other] :: Title: The Possible z=0.83 Precursors of z=0 M* Early-type Cluster Galaxies
Authors: B. P. Holden, M. Franx, G. D. Illingworth, M. Postman, J. P. Blakeslee, N. Homeier, R. Demarco, H. Ford, P. Rosati, D. Kelson, K.-V. Tran
Comments: 5 pages in emulate ApJ format with three color figures. Accepted for publication in ApJ Letters, v642n2. Updated to correct grammatical and typographic errors found by the journal
Note: replaced with revised version Thu, 20 Apr 2006 20:15:22 GMT (33kb)
astro-ph/0604299 [abs, ps, pdf, other] :: Title: Interaction of massive black hole binaries with their stellar environment: I. Ejection of hypervelocity stars
Authors: A. Sesana (1), F. Haardt (1), P. Madau (2) ((1)Universita' dell'Insubria, Como, Italy,(2)University of California, Santa Cruz CA, USA)
Comments: 9 pages, 12 figures, submitted to ApJ
Note: replaced with revised version Fri, 21 Apr 2006 12:59:04 GMT (74kb)
astro-ph/0604342 [abs, ps, pdf, other] :: Title: Evidence for a Cosmological Phase Transition From the Dark Energy Scale
Authors: James Lindesay
Comments: 42 pages, 9 figures, v2 has additional citations
Note: replaced with revised version Fri, 21 Apr 2006 14:11:01 GMT (185kb)
astro-ph/0604349 [abs, ps, pdf, other] :: Title: Revisiting the characteristics of the spectral lags in short gamma-ray bursts
Authors: Zhibin Zhang, J. G. Deng
Comments: 16 pages, 7 figures, 1 table
Note: replaced with revised version Fri, 21 Apr 2006 08:42:05 GMT (92kb)
astro-ph/0604376 [abs, ps, pdf, other] :: Title: The Mexican Hat Wavelet Family. Application to point source detection in CMB maps
Authors: J. Gonzalez-Nuevo, F. Argueso, M. Lopez-Caniego, L. Toffolatti, J. L. Sanz, P. Vielva, D. Herranz
Comments: 11 pages and 4 figures. Accepted for publication on MNRAS
Note: replaced with revised version Fri, 21 Apr 2006 10:59:12 GMT (253kb)
astro-ph/0604403 [abs, ps, pdf, other] :: Title: Primordial gas cooling behind shock waves in merging halos
Authors: E.O. Vasiliev, Yu.A. Shchekinov
Comments: 17 pages, 5 figures, submitted in New Astronomy, reference list extended
Note: replaced with revised version Fri, 21 Apr 2006 10:16:24 GMT (78kb)
astro-ph/0604416 [abs, ps, pdf, other] :: Title: CMB Anisotropies at Second Order I
Authors: N. Bartolo (ICTP, Trieste), S. Matarrese (Univ. of Padova), A. Riotto (CERN)
Comments: 26 pages, LaTeX file, references added, typos corrected
Note: replaced with revised version Fri, 21 Apr 2006 16:45:40 GMT (35kb)
gr-qc/0602004 [abs, ps, pdf, other] :: Title: Radiation Damping in Einstein-Aether Theory
Authors: Brendan Z. Foster
Comments: 24 pages, 1 figure; v2: added comments and references
Note: replaced with revised version Fri, 21 Apr 2006 19:14:41 GMT (27kb)
gr-qc/0602071 [abs, ps, pdf, other] :: Title: Tidal Dynamics in Kerr Spacetime
Authors: C. Chicone, B. Mashhoon
Comments: 15 pages, 3 figures; v2: slightly expanded version accepted for publication in CQG
Note: replaced with revised version Thu, 20 Apr 2006 21:50:04 GMT (73kb)
hep-ph/0602106 [abs, ps, pdf, other] :: Title: Modular thermal inflation without slow-roll approximation
Authors: Jinn-Ouk Gong
Comments: (v1) 13 pages, 1 table, no figure; (v2) 14 pages, 1 table, no figure, References added; (v3) A new subsection (3.2.3) added, one reference added, to appear in Physics Letters B
Note: replaced with revised version Fri, 21 Apr 2006 08:09:49 GMT (13kb)
hep-th/0501059 [abs, ps, pdf, other] :: Title: Holographic explanation of wide-angle power correlation suppression in the Cosmic Microwave Background Radiation
Authors: Zhuo-Yi Huang, Bin Wang, Elcio Abdalla, Ru-Keng Su
Comments: 12 pages, 5 figures, revised version, accepted for publication in JCAP
Note: replaced with revised version Fri, 21 Apr 2006 02:11:00 GMT (515kb)
hep-th/0602268 [abs, ps, pdf, other] :: Title: Attractor solutions for general hessence dark energy
Authors: M. Alimohammadi, H. Mohseni Sadjadi
Comments: 11 pages. Add some explanations about the autonomousity of the equations, and also a conclusion section was added. To appear in Phys. Rev. D (2006)
Note: replaced with revised version Thu, 20 Apr 2006 21:15:00 GMT (12kb)
physics/0601043 [abs, ps, pdf, other] :: Title: General stability criterion of inviscid parallel flow
Authors: Liang Sun
Comments: Revtex4, 4 pages, 2 figures, extends the first part of physics/0512208, Accepted, to be continued
Subj-class: Fluid Dynamics; Plasma Physics; Mathematical Physics
Note: replaced with revised version Fri, 21 Apr 2006 13:46:26 GMT (16kb)

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Cross-listings

gr-qc/0604086 [abs, ps, pdf, other] :: Title: The York map as a Shanmugadhasan canonical transformation in tetrad gravity and the role of non-inertial frames in the geometrical view of the gravitational field
Authors: David Alba (Firenze Univ.), Luca Lusanna (INFN, Firenze)
Comments: 90 pages

A new parametrization of the 3-metric allows to find explicitly a York map in canonical ADM tetrad gravity, the two pairs of physical tidal degrees of freedom and 14 gauge variables. These gauge quantities (generalized inertial effects) are all configurational except the trace ${}^3K(\tau ,\vec \sigma)$ of the extrinsic curvature of the instantaneous 3-spaces $\Sigma_{\tau}$ (clock synchronization convention) of a non-inertial frame. The Dirac hamiltonian is the sum of the weak ADM energy $E_{ADM} = \int d^3\sigma {\cal E}_{ADM}(\tau ,\vec \sigma)$ (whose density is coordinate-dependent due to the inertial potentials) and of the first-class constraints. Then: i) The explicit form of the Hamilton equations for the two tidal degrees of freedom in an arbitrary gauge: a deterministic evolution can be defined only in a completely fixed gauge, i.e. in a non-inertial frame with its pattern of inertial forces. ii) A general solution of the super-momentum constraints, which shows the existence of a generalized Gribov ambiguity associated to the 3-diffeomorphism gauge group. It influences: a) the explicit form of the weak ADM energy and of the super-momentum constraint; b) the determination of the shift functions and then of the lapse one. iii) The dependence of the Hamilton equations for the two pairs of dynamical gravitational degrees of freedom (the generalized tidal effects) and for the matter, written in a completely fixed 3-orthogonal Schwinger time gauge, upon the gauge variable ${}^3K(\tau ,\vec \sigma)$, determining the convention of clock synchronization. Therefore it should be possible (for instance in the weak field limit but with relativistic motion) to try to check whether in Einstein's theory the {\it dark matter} is a gauge relativistic inertial effect induced by ${}^3K(\tau ,\vec \sigma)$.
gr-qc/0604087 [abs, ps, pdf, other] :: Title: Explaining Leibniz-equivalence as difference of non-inertial appearances: dis-solution of the Hole Argument and physical individuation of point-events
Authors: Luca Lusanna (INFN, Firenze), Massimo Pauri (Parma Univ.)
Comments: 37 pages, talk at Oxford Conference on Spacetime (2004), to appear in Studies in History and Philosophy of Modern Physics

"The last remnant of physical objectivity of space-time" is disclosed in the case of a continuous family of spatially non-compact models of general relativity (GR). The {\it physical individuation} of point-events is furnished by the intrinsic degrees of freedom of the gravitational field, (viz, the {\it Dirac observables}) that represent - as it were - the {\it ontic} part of the metric field. The physical role of the {\it epistemic} part (viz. the {\it gauge} variables) is likewise clarified as emboding the unavoidable non-inertial aspects of GR. At the end the philosophical import of the {\it Hole Argument} is substantially weakened and in fact the Argument itself dis-solved, while a specific four-dimensional {\it holistic and structuralist} view of space-time, (called {\it point-structuralism}), emerges, including elements common to the tradition of both {\it substantivalism} and {\it relationism}. The observables of our models undergo real {\it temporal change}: this gives new evidence to the fact that statements like the {\it frozen-time} character of evolution, as other ontological claims about GR, are {\it model dependent}. \medskip Forthcoming in Studies in History and Philosophy of Modern Physics
gr-qc/0604088 [abs, ps, pdf, other] :: Title: Black Holes in Einstein-Aether Theory
Authors: Christopher Eling, Ted Jacobson
Comments: 22 pages, 6 figures

We study black hole solutions in general relativity coupled to a unit timelike vector field dubbed the "aether". To be causally isolated a black hole interior must trap matter fields as well as all aether and metric modes. The theory possesses spin-0, spin-1, and spin-2 modes whose speeds depend on four coupling coefficients. We find that the full three-parameter family of local spherically symmetric static solutions is always regular at a metric horizon, but only a two-parameter subset is regular at a spin-0 horizon. Asymptotic flatness imposes another condition, leaving a one-parameter family of regular black holes. These solutions are compared to the Schwarzschild solution using numerical integration for a special class of coupling coefficients. They are very close to Schwarzschild outside the horizon for a wide range of couplings, and have a spacelike singularity inside, but differ inside quantitatively. Some quantities constructed from the metric and aether oscillate in the interior as the singularity is approached. The aether is at rest at spatial infinity and flows into the black hole, but differs significantly from the the 4-velocity of freely-falling geodesics.
hep-ph/0604188 [abs, ps, pdf, other] :: Title: Long-Lived Staus at Neutrino Telescopes
Authors: Markus Ahlers, Joern Kersten, Andreas Ringwald
Comments: 12 pages, 6 figures, uses iopart.cls

We perform an exhaustive study of the role neutrino telescopes could play in the discovery and exploration of supersymmetric extensions of the Standard Model with a long-lived stau next-to-lightest superparticle. These staus are produced in pairs by cosmic neutrino interactions in the Earth matter. We show that the background of stau events to the standard muon signal is negligible and plays no role in the determination of the cosmic neutrino flux. On the other hand, one can expect up to 50 pair events per year in a cubic kilometer detector such as IceCube, if the superpartner mass spectrum and the high-energy cosmic neutrino flux are close to experimental bounds.
hep-th/0604131 [abs, ps, pdf, other] :: Title: AdS non-linear curvature-squared and curvature-quartic multidimensional (D=8) gravitational models with stabilized extra dimensions
Authors: Tamerlan Saidov, Alexander Zhuk
Comments: 12 pages, 2 figures

We investigate $D$-dimensional gravitational model with curvature-quadratic and curvature-quartic correction terms: $R+R^2+R^4$. It is assumed that the corresponding higher dimensional spacetime manifold undergos a spontaneous compactification to a manifold with warped product structure. Special attention is paid to the stability of the extra-dimensional factor space for a model with critical dimension D=8. It is shown that for certain parameter regions the model allows for a freezing stabilization of this space. The effective four-dimensional cosmological constant is negative and the external four-dimensional spacetime is asymptotically AdS.
hep-th/0604150 [abs, ps, pdf, other] :: Title: The Geometry of The Entropic Principle and the Shape of the Universe
Authors: Brett McInnes
Comments: 24 pages, 4 eps figures

Ooguri, Vafa, and Verlinde have outlined an approach to two-dimensional accelerating string cosmology which is based on topological string theory, the ultimate objective being to develop a string-theoretic understanding of "creating the Universe from nothing". The key technical idea here is to assign *two different* Lorentzian spacetimes to a certain Euclidean space. Here we give a simple framework which allows this to be done in a systematic way. This framework allows us to extend the construction to higher dimensions. We find then that the general shape of the spatial sections of the newly created Universe is constrained by the OVV formalism: the sections have to be flat and compact.
math-ph/0604038 [abs, ps, pdf, other] :: Title: The classical Bertrand-Darboux problem
Authors: Roman G. Smirnov
Comments: 20 pages, 4 figures (in total 5 files)
Subj-class: Mathematical Physics; Exactly Solvable and Integrable Systems; Differential Geometry; History and Overview
MSC-class: 37J35, 53C05

The well-known problem of classical mechanics considered by Bertrand (1857) and Darboux (1901) is reviewed in the context of Cartan's geometry.
math.DG/0603367 [abs, ps, pdf, other] :: Title: On the Dirac equation in a gravitation field and the secondary quantization
Authors: Ruslan Sharipov
Comments: AmSTeX, 10 pages, amsppt style
Subj-class: Differential Geometry; Mathematical Physics
MSC-class: 81T20, 83C47

The Dirac equation for massive free electrically neutral spin 1/2 particles in a gravitation field is considered. The secondary quantization procedure is applied to it and the Hilbert space of multiparticle quantum states is constructed.

Replacements

astro-ph/0509460 [abs, ps, pdf, other] :: Title: Challenges for Precision Cosmology with X-ray and Sunyaev-Zeldovich Effect Gas Mass Measurements of Galaxy Clusters
Authors: Eric J. Hallman (1), Patrick M. Motl (1), Jack O. Burns (1), Michael L. Norman (2) ((1) University of Colorado, (2) University of California-San Diego)
Comments: 16 pages, 14 figures, Accepted to the Astrophysical Journal major changes made during refereeing
Note: replaced with revised version Mon, 24 Apr 2006 15:24:26 GMT (355kb)
astro-ph/0510205 [abs, ps, pdf, other] :: Title: Why the observed black hole candidates do not show spin pulsation
Authors: Abhas Mitra
Comments: 4 pages, paper presented in COSPAR colloquium on Spectra and Timing of Compact X-ray Binaries (2005), Proc. to be published by Elsevier Sc, final version, important new ref. added
Note: replaced with revised version Sat, 22 Apr 2006 10:04:21 GMT (5kb)
astro-ph/0511411 [abs, ps, pdf, other] :: Title: Dark-matter particles and baryons from inflation and spontaneous CP violation in the early universe
Authors: Saul Barshay, Georg Kreyerhoff
Comments: 7 pages, appendix added
Note: replaced with revised version Mon, 24 Apr 2006 14:09:37 GMT (8kb)
astro-ph/0511532 [abs, ps, pdf, other] :: Title: The Physical Properties and Detectability of Reionization-Epoch Galaxies
Authors: Romeel Davé, Kristian Finlator, Benjamin D. Oppenheimer (Arizona)
Comments: 20 pages, MNRAS, accepted. Expanded discussions, conclusions unchanged
Note: replaced with revised version Mon, 24 Apr 2006 16:29:17 GMT (152kb)
astro-ph/0512347 [abs, ps, pdf, other] :: Title: A Near-Infrared Analysis of the Submillimeter Background and the Cosmic Star-Formation History
Authors: W.-H. Wang, L.L. Cowie, A.J. Barger
Comments: 14 pages, 15 figures. Accepted by The Astrophysical Journal for v647n 1 issue, August 2006. Minor changes in response to the referee's report, plus a new comparison figure of the star formation history measured in the FIR with that measured in the UV. We plot d(rho)/dt x cosmic time vs. cosmic time, which has the advantage of illustrating more directly how many stars are formed at a given time
Note: replaced with revised version Fri, 21 Apr 2006 22:42:04 GMT (161kb)
astro-ph/0512464 [abs, ps, pdf, other] :: Title: Moving dark energy and the CMB dipole
Authors: A.L. Maroto
Comments: 9 pages, no figures. New comments and references included. Final version to appear in JCAP
Note: replaced with revised version Mon, 24 Apr 2006 07:56:31 GMT (9kb)
astro-ph/0601057 [abs, ps, pdf, other] :: Title: Dissecting the Circumstellar Environment of Gamma-Ray Burst Progenitors
Authors: Jason X. Prochaska (1), Hsiao-Wen Chen (2), Joshua S. Bloom (3)
Comments: 18 pages, 13 figures. Substantial revision after addressing referee's comments
Note: replaced with revised version Sat, 22 Apr 2006 06:55:22 GMT (85kb)
astro-ph/0601125 [abs, ps, pdf, other] :: Title: The early X-ray emission from GRBs
Authors: P.T. O'Brien, R. Willingale, J. Osborne, M.R. Goad, K.L. Page, S. Vaughan, E. Rol, A. Beardmore, O. Godet, C. Hurkett, A. Wells, B. Zhang, S. Kobayashi, D.N. Burrows, J.A. Nousek, J.A. Kennea, A. Falcone, D. Grupe, N. Gehrels, S. Barthelmy, J. Cannizzo, J. Cummings, J. Hill, H. Krimm, G. Chincarini, G. Tagliaferri, S. Campana, A. Moretti, P. Giommi, M. Perri, V. Mangano, V. LaParola
Comments: Submitted to ApJ on December 16. Revised following referee's comments. Accepted for publication in ApJ
Note: replaced with revised version Mon, 24 Apr 2006 13:25:31 GMT (459kb)
astro-ph/0601161 [abs, ps, pdf, other] :: Title: Resonant relaxation near a massive black hole: the stellar distribution and gravitational wave sources
Authors: Clovis Hopman, Tal Alexander (Weizmann)
Comments: Accepted to ApJ; Minor revisions
Note: replaced with revised version Mon, 24 Apr 2006 12:14:05 GMT (75kb)
astro-ph/0602099 [abs, ps, pdf, other] :: Title: Angular Trispectrum of CMB Temperature Anisotropy from Primordial Non-Gaussianity with the Full Radiation Transfer Function
Authors: Noriyuki Kogo, Eiichiro Komatsu
Comments: 6 pages, 2 figures, version to be published in PRD
Journal-ref: Phys.Rev. D73 (2006) 083007
Note: replaced with revised version Mon, 24 Apr 2006 05:12:02 GMT (38kb)
astro-ph/0603440 [abs, ps, pdf, other] :: Title: The redshift distribution of short gamma-ray bursts from dynamically formed neutron star binaries
Authors: Clovis Hopman, Dafne Guetta, Eli Waxman, Simon Portegies Zwart
Comments: Accepted to ApJL; Minor revisions
Note: replaced with revised version Mon, 24 Apr 2006 12:23:39 GMT (37kb)
astro-ph/0603789 [abs, ps, pdf, other] :: Title: Magnetorotational supernovae with jets
Authors: S.G.Moiseenko, G.S.Bisnovatyi-Kogan, N.V.Ardeljan
Comments: 13 pages, 22 figures, submitted to journal
Note: replaced with revised version Mon, 24 Apr 2006 17:40:16 GMT (920kb)
astro-ph/0603832 [abs, ps, pdf, other] :: Title: SN 2006aj and the nature of low-luminosity gamma-ray bursts
Authors: B. E. Cobb, C. D. Bailyn, P. G. van Dokkum, P. Natarajan (Yale University)
Comments: submitted to ApJ Letters, references added, edited
Note: replaced with revised version Fri, 21 Apr 2006 22:02:37 GMT (27kb)
astro-ph/0603840 [abs, ps, pdf, other] :: Title: A Fundamental Relation Between Compact Stellar Nuclei, Supermassive Black Holes, and Their Host Galaxies
Authors: Laura Ferrarese, Patrick Cote, Elena Dalla Bonta, Eric W. Peng, David Merritt, Andres Jordan, John P. Blakeslee, Monica Hasegan, Simona Mei, Slawomir Piatek, John L. Tonry, Michael J. West
Comments: ApJ Letters, Accepted. Postscript and PDF versions of the manuscript (with full resolution figures) can also be retreived from the ACS Virgo Cluster Survey (ACSVCS) webpage: this http URL
Note: replaced with revised version Mon, 24 Apr 2006 18:57:30 GMT (125kb)
astro-ph/0604337 [abs, ps, pdf, other] :: Title: Periodic Modulations in an X-ray Flare from Sagittarius A*
Authors: Guillaume Belanger (CEA/Dapnia/Sap, Apc), Regis Terrier (CEA/Dapnia/Sap, Apc), Okkie De Jager, Andrea Goldwurm (CEA/Dapnia/Sap, Apc), Fulvio Melia
Comments: 4 pages, 6 figures, submitted to ApJL
Note: replaced with revised version Sun, 23 Apr 2006 19:27:20 GMT (29kb)
astro-ph/0604416 [abs, ps, pdf, other] :: Title: CMB Anisotropies at Second Order I
Authors: N. Bartolo (ICTP, Trieste), S. Matarrese (Univ. of Padova), A. Riotto (CERN)
Comments: 26 pages, LaTeX file, references added, typos corrected
Note: replaced with revised version Mon, 24 Apr 2006 09:32:50 GMT (35kb)
gr-qc/0511159 [abs, ps, pdf, other] :: Title: Scaling of cosmic string loops
Authors: Vitaly Vanchurin, Ken D. Olum, Alexander Vilenkin
Comments: Added discussion of gravitational wave bounds; other minor changes
Note: replaced with revised version Mon, 24 Apr 2006 19:07:35 GMT (49kb)
gr-qc/0602081 [abs, ps, pdf, other] :: Title: Physics of dark energy particles
Authors: C. G. Boehmer, T. Harko
Comments: 10 pages, no figures; typos corrected, 4 references added; to appear in Mod. Phys. Lett. A
Note: replaced with revised version Mon, 24 Apr 2006 02:36:59 GMT (8kb)
hep-ph/0505249 [abs, ps, pdf, other] :: Title: From Primordial Quantum Fluctuations to the Anisotropies of the Cosmic Microwave Background Radiation
Authors: Norbert Straumann
Comments: 203 pages, 15 figures, Based on lectures given at the \textit{Physik-Combo}, in Halle, Leipzig and Jena, winter semester 2004/5. To appear in \emph{Ann. Phys. (Leipzig)
Note: replaced with revised version Sat, 22 Apr 2006 09:54:45 GMT (221kb)

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gr-qc/0604092 [abs, ps, pdf, other] :: Title: General Relativistic Galaxy Rotation Curves: Implications for Dark Matter Distribution
Authors: Dylan Menzies, Grant J. Mathews
Comments: 8 pages, 5 figures, submitted to Class. Quant. Grav

It has recently been suggested that observed galaxy rotation curves can be accounted for by general relativity without recourse to dark-matter halos. Good fits have been produced to observed galatic rotation curves using this model. We show that the implied total mass is infinite, adding to the evidence opposing the hypothesis.
gr-qc/0604098 [abs, ps, pdf, other] :: Title: A class of space-times of non-rigidly rotating dust
Authors: Lukasz Bratek, Joanna Jalocha, Marek Kutschera

We find a class of exact solutions of differentially rotating dust in the framework of General Relativity. There exist asymptotically flat space-times of the flow with positive mass function that for radii sufficiently large is monotonic and tends to zero at infinity. Some of the space-times may have non-vanishing total angular momentum. The flow is essentially different from another exactly solvable flow described by van Stockum line element.
gr-qc/0604099 [abs, ps, pdf, other] :: Title: The Hyperfine Einstein-Infeld-Hoffmann Potential
Authors: Rafael A. Porto, Ira Z. Rothstein
Comments: 4 pages, 2 figures, RevTex

We use recently developed effective field theory techniques to calculate the third order post-Newtonian correction to the spin-spin potential between two spinning objects. This correction represents the first contribution to the spin-spin interaction due to the non-linear nature of general relativity and will play an important role in forthcoming gravity wave experiments.
gr-qc/0604102 [abs, ps, pdf, other] :: Title: Einstein equations: exact solutions
Authors: Jiri Bicak
Comments: 8 pages, published in Encyclopedia of Mathematical Physics, eds. J.-P. Francoise, G. L. Naber and Tsou S. T., Oxford: Elsevier, 2006 (ISBN 978-0-1251-2666-3), volume 2, page 165-173. (The number of references had to be limited, some additional references are indicated inside the text only.)

In Einstein's general relativity, with its nonlinear field equations, the discoveries and analyzes of various specific explicit solutions made a great impact on understanding many of the unforeseen features of the theory. Some solutions found fundamental applications in astrophysics, cosmology and, more recently, in the developments inspired by string theory. In this short article we survey the invariant characterization and classification of the solutions and describe the properties and role of the most relevant classes: Minkowski, (anti-)de Sitter spacetimes, spherical Schwarzschild and Reissner-Nordstroem metrics, stationary axisymmetric solutions, radiative metrics describing plane and cylindrical waves, radiative fields of uniformly accelerated sources and Robinson-Trautman solutions. Metrics representing regions of spacetimes filled with matter are also discussed and cosmological models are very briefly mentioned. Some parts of the text are based on a detailed survey which appeared in gr-qc/0004016 (see Ref. 2).
hep-ph/0604134 [abs, ps, pdf, other] :: Title: The Stability of Strange Star Crusts and Strangelets
Authors: Mark G. Alford, Krishna Rajagopal, Sanjay Reddy, Andrew Steiner
Comments: 11 pages, LaTeX

We construct strangelets, taking into account electrostatic effects, including Debye screening, and arbitrary surface tension sigma of the interface between vacuum and quark matter. We find that there is a critical surface tension sigma_crit below which large strangelets are unstable to fragmentation and below which quark star surfaces will fragment into a crystalline crust made of charged strangelets immersed in an electron gas. We derive a model-independent relationship between sigma_crit and two parameters that characterize any quark matter equation of state. For reasonable model equations of state, we find sigma_crit typically of order a few MeV/fm^2. If sigma <= sigma_crit, the size-distribution of strangelets in cosmic rays could feature a peak corresponding to the stable strangelets that we construct.
hep-ph/0604179 [abs, ps, pdf, other] :: Title: Surface structure of Quark stars with magnetic fields
Authors: Prashanth Jaikumar
Comments: 9 pages, 3 figures. Contribution to the proceedings of the IXth Workshop on High Energy Physics Phenomenology (WHEPP-9), Bhubaneswar, India, 3-14 Jan. 2006

We investigate the impact of magnetic fields on the electron distribution in the electrosphere of quark stars. For moderately strong magnetic fields $B\sim 10^{13}$G, quantization effects are generally weak due to the large number density of electrons at surface, but can nevertheless affect the spectral features of quark stars. We outline the main observational characteristics of quark stars as determined by their surface emission, and briefly discuss their formation in explosive events termed Quark-Novae, which may be connected to the $r$-process.
hep-ph/0604191 [abs, ps, pdf, other] :: Title: How astrophysical neutrino sources could be used for early measurements of neutrino mass hierarchy and leptonic CP phase
Authors: Walter Winter
Comments: 30 pages, 15 figures

We discuss the possible impact of astrophysical neutrino flux measurements at neutrino telescopes on the neutrino oscillation program of reactor experiments and neutrino beams. We consider neutrino fluxes from neutron sources, muon damped sources, and pion sources, where we parameterize the input from these sources in terms of the flux ratio $R=\phi_\mu/(\phi_e+\phi_\tau)$ which can be extracted from the muon track to shower ratio in a neutrino telescope. While it is difficult to obtain any information from this ratio alone, we demonstrate that the dependence on the oscillation parameters is very complementary to the one of reactor experiments and neutrino beams. We find that for large values of $\sin^2 2 \theta_{13}$, a measurement of R with a precision of about 20% or better may not only improve the measurement of the leptonic CP phase, but also help the determination of the mass hierarchy. In some cases, early information on $\delta_{CP}$ may even be obtained from Double Chooz and an astrophysical flux alone without the help of superbeams. For small values of $\sin^2 2 \theta_{13}$, we find that using the information from an astrophysical neutrino flux could eliminate the octant degeneracy better than reactor experiments and beams alone. Finally, we demonstrate that implementing an additional observable based on the electromagnetic to hadronic shower ratio at a neutrino telescope (such as at higher energies) could be especially beneficial for pion beam sources.

Replacements

astro-ph/0507387 [abs, ps, pdf, other] :: Title: Deceleration of a Relativistic, Photon-Rich Shell: End of Preacceleration, Damping of MHD Turbulence, and the Emission Mechanism of Gamma-Ray Bursts
Authors: Christopher Thompson
Comments: 32 pages, 5 figures, in press in the Astrophysical Journal, vol. 647
Note: replaced with revised version Tue, 25 Apr 2006 04:07:28 GMT (115kb)
astro-ph/0509615 [abs, ps, pdf, other] :: Title: A gamma-ray burst remnant in our Galaxy: HESS J1303-631
Authors: A. Atoyan, J. Buckley, H. Krawczynski
Comments: Replaced by the version accepted in ApJ Letters (to appear in April/May 2006); 4 pages, 3 figures
Note: replaced with revised version Mon, 24 Apr 2006 22:28:10 GMT (31kb)
astro-ph/0512396 [abs, ps, pdf, other] :: Title: A Lyman-alpha blob in the GOODS South field: evidence for cold accretion onto a dark matter halo
Authors: Kim Nilsson (1,2), Johan P.U. Fynbo (2), Palle Moller (1), Jesper Sommer-Larsen (2), Cedric Ledoux (3), ((1) ESO-Garching, (2) DARK Cosmology Centre, DK, (3) ESO-Chile)
Comments: 4 pages, 2 tables, 2 figures, Accepted to A&A Letters, minor changes to text
Note: replaced with revised version Tue, 25 Apr 2006 02:58:59 GMT (559kb)
astro-ph/0601039 [abs, ps, pdf, other] :: Title: Are Ti44-Producing Supernovae Exceptional?
Authors: L.-S. The, D. D. Clayton, R. Diehl, D. H. Hartmann, A. F. Iyudin, M. D. Leising, B. S. Meyer, Y. Motizuki, V. Schonfelder
Comments: 23 pages, 14 figures, accepted for publication in Astronomy and Astrophysics 2006. Correcting the SN type of Tycho in Table B.1. and add its associated references
Journal-ref: Astronomy & Astrophysics 450, 1037-1050 (2006)
Note: replaced with revised version Mon, 24 Apr 2006 23:38:37 GMT (212kb)
astro-ph/0604231 [abs, ps, pdf, other] :: Title: Particle decay in the early universe: predictions for 21 cm
Authors: Yu. A. Shchekinov, E. O. Vasiliev
Comments: 5 pages, 4 figures, submitted in MNRAS, reference list extended
Note: replaced with revised version Tue, 25 Apr 2006 12:31:29 GMT (111kb)
astro-ph/0604450 [abs, ps, pdf, other] :: Title: First Year Performance of The IceCube Neutrino Telescope
Authors: The IceCube Collaboration
Note: replaced with revised version Tue, 25 Apr 2006 02:07:47 GMT (607kb)
astro-ph/0604470 [abs, ps, pdf, other] :: Title: LP 400-22, A very low-mass and high-velocity white dwarf
Authors: Adela Kawka, Stephane Vennes, Terry D. Oswalt, J. Allyn Smith, Nicole M. Silvestri
Comments: accepted for publication in ApJ Letters, made minor corrections
Note: replaced with revised version Tue, 25 Apr 2006 15:12:15 GMT (33kb)
gr-qc/0604071 [abs, ps, pdf, other] :: Title: Weaker Gravity at Submillimetre Scales in Braneworld Models
Authors: Claudia de Rham, Tetsuya Shiromizu, Andrew J. Tolley
Comments: References added, typos corrected
Note: replaced with revised version Mon, 24 Apr 2006 22:45:16 GMT (47kb)
hep-ph/0601054 [abs, ps, pdf, other] :: Title: The diffuse neutrino flux from supernovae: upper limit on the electron neutrino component from the non-observation of antineutrinos at SuperKamiokande
Authors: Cecilia Lunardini
Comments: LaTeX, 5 pages, 1 figure. Paper is modified in the presentation (Fig. 1 was replaced with a different plot and Table 1 was expanded), with unchanged results. References added and corrected
Note: replaced with revised version Tue, 25 Apr 2006 18:37:39 GMT (20kb)
hep-ph/0603265 [abs, ps, pdf, other] :: Title: Gravitino Overproduction in Inflaton Decay
Authors: Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida
Comments: 14 pages, 1 figure; note added about the mixing effects
Note: replaced with revised version Tue, 25 Apr 2006 10:13:06 GMT (441kb)

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cond-mat/0604557 [abs, ps, pdf, other] :: Title: Stable skyrmions in spinor condensates
Authors: Igor F. Herbut, Masaki Oshikawa
Comments: 4 pages, 2 figures
Subj-class: Superconductivity; Statistical Mechanics; Pattern Formation and Solitons

Globally symmetric spinor condensates in free space are argued not to support stable topological defects in either two or three dimensions. In the latter case, however, we show that a topological skyrmion can be stabilized by forcing it to adopt certain density profiles. A sufficient condition for the existence of a stable skyrmion in three dimensions is formulated and illustrated in simple examples. Our results pertain to Bose-Einstein condensation in Rb.
gr-qc/0604093 [abs, ps, pdf, other] :: Title: Kerr black hole lensing for generic observers in the strong deflection limit
Authors: V. Bozza, F. De Luca, G. Scarpetta

We generalize our previous work on gravitational lensing by a Kerr black hole in the strong deflection limit, removing the restriction to observers on the equatorial plane. Starting from the Schwarzschild solution and adding corrections up to the second order in the black hole spin, we perform a complete analytical study of the lens equation for relativistic images created by photons passing very close to a Kerr black hole. We find out that, to the lowest order, all observables (including shape and shift of the black hole shadow, caustic drift and size, images position and magnification) depend on the projection of the spin on a plane orthogonal to the line of sight. In order to break the degeneracy between the black hole spin and its inclination relative to the observer, it is necessary to push the expansion to higher orders. In terms of future VLBI observations, this implies that very accurate measures are needed to determine these two parameters separately.
gr-qc/0604100 [abs, ps, pdf, other] :: Title: Spin Dependence in Computational Black Hole Data
Authors: Scott H. Hawley, Michael J. Vitalo, Richard A. Matzner
Comments: 27 pages, 10 figures

We have implemented a parallel multigrid solver, to solve the initial data problem for 3+1 General Relativity. This involves solution of elliptic equations derived from the Hamiltonian and the momentum constraints. We use the conformal transverse-traceless method of York and collaborators which consists of a conformal decomposition with a scalar $\phi$ that adjusts the metric, and a vector potential $w^i$ that adjusts the longitudinal components of the extrinsic curvature. The constraint equations are then solved for these quantities $\phi$, $w^i$ such that the complete solution fully satisfies the constraints. We apply this technique to compare with theoretical expectations for the spin-orientation- and separation-dependence in the case of spinning interacting (but not orbiting) black holes. We write out a formula for the effect of the spin-spin interaction which includes a result of Wald as well as additional effect due to the rotation of the mass quadrupole moment of a spinning black hole. A subset of these spin-spin effects are confirmed via our numerical calculations, however due to computer time limitations the full parameter space has not yet been surveyed and confirmed. In particular, at the relatively small s eparations ($d \leq 18m$) we are able to consider, we are unable to confirm the expected asymptotic fall-off of $d^{-3}$ for these effects.
gr-qc/0604101 [abs, ps, pdf, other] :: Title: Stability of naked singularities and algebraically special modes
Authors: Vitor Cardoso, Marco Cavaglia
Comments: 6 pages. ReVTeX4

We show that algebraically special modes lead to the instability of naked singularity spacetimes with negative mass. Four-dimensional negative-mass Schwarzschild and Schwarzschild-de Sitter spacetimes are unstable. Stability of the Schwarzschild-anti-de Sitter spacetime depends on boundary conditions. We briefly discuss the generalization of these results to charged and rotating singularities.
hep-th/0604186 [abs, ps, pdf, other] :: Title: Brane Inflation After WMAP Three Year Results
Authors: Qing-Guo Huang, Miao Li, Jian-Huang She
Comments: 10 pages, 3 figures

WMAP three-year data favors a red power spectrum at the level of 2 standard deviations, which provides a stringent constraint on the inflation models. In this note we use this data to constrain brane inflation models and find that KKLMMT model can not fit WMAP+SDSS data at the level of 1 standard deviation and a fine-tuning, eight parts in thousand at least, is needed at the level of 2 standard deviation.

Replacements

astro-ph/0507620 [abs, ps, pdf, other] :: Title: Inductive acceleration of UHECRs in sheared relativistic jets
Authors: Maxim Lyutikov (1,2), Rachid Ouyed (3), ((1) UBC, (2) University of Rochester, (3) University of Calgary)
Comments: 45 pages, 5 figures, submitted to Astroparticle Physics
Note: replaced with revised version Wed, 26 Apr 2006 18:04:40 GMT (51kb)
astro-ph/0510527 [abs, ps, pdf, other] :: Title: Dust Dynamics, Surface Brightness Profiles, and Thermal Spectra of Debris Disks: The Case of AU Mic
Authors: Linda E. Strubbe, Eugene I. Chiang
Comments: Revised version. Includes consideration of anisotropic scattering and lower stellar mass loss rates, and calculation of SED
Note: replaced with revised version Wed, 26 Apr 2006 18:44:53 GMT (722kb)
astro-ph/0601163 [abs, ps, pdf, other] :: Title: Dark Energy Constraints from Baryon Acoustic Oscillations
Authors: Yun Wang
Comments: 11 pages including 5 color figures and 1 table. ApJ accepted
Note: replaced with revised version Tue, 25 Apr 2006 22:35:48 GMT (45kb)
astro-ph/0601700 [abs, ps, pdf, other] :: Title: Chandra Observations of SDSS J1004+4112: Constraints on the Lensing Cluster and Anomalous X-Ray Flux Ratios of the Quadruply Imaged Quasar
Authors: N. Ota, N. Inada, M. Oguri, K. Mitsuda, G. T. Richards, Y. Suto, W. N. Brandt, F. J. Castander, R. Fujimoto, P. B. Hall, C. R. Keeton, R. C. Nichol, D. P. Schneider, D. E. Eisenstein, J. A. Frieman, E. L. Turner, T. Minezaki, Y. Yoshii
Comments: 9 pages, 5 figures. Accepted for publication in ApJ. Version with high-quality color figures at this http URL
Note: replaced with revised version Wed, 26 Apr 2006 10:31:58 GMT (369kb)
astro-ph/0603177 [abs, ps, pdf, other] :: Title: The DEEP2 Galaxy Redshift Survey: The Relationship Between Galaxy Properties and Environment at z ~ 1
Authors: Michael C. Cooper, Jeffrey A. Newman, Darren J. Croton, Benjamin J. Weiner, Christopher N. A. Willmer, Brian F. Gerke, Darren S. Madgwick, S. M. Faber, Marc Davis, Alison L. Coil, Douglas P. Finkbeiner, Puragra Guhathakurta, David C. Koo
Comments: 36 pages including 10 figures and revised text, accepted to MNRAS
Note: replaced with revised version Wed, 26 Apr 2006 15:57:48 GMT (710kb)
astro-ph/0604005 [abs, pdf] :: Title: Fomin's conception of quantum cosmogenesis
Authors: Marek Szydlowski, Jacek Golbiak
Comments: 21 pages, 4 figures; (v2) 22 pages, references added, figures improved
Note: replaced with revised version Wed, 26 Apr 2006 14:16:03 GMT (298kb)
astro-ph/0604028 [abs, ps, pdf, other] :: Title: Who Is Eating the Outflow?: High-Angular Resolution Study of an Intermediate-Mass Protostar in L1206
Authors: Maria T. Beltran (1), Josep M. Girart (2), Robert Estalella (1) ((1) Universitat de Barcelona; (2) Institut de Ciencies de l'Espai (CSIC-IEEC))
Comments: 14 pages, 12 figures, 5 tables. Accepted for publication by A&A
Note: replaced with revised version Wed, 26 Apr 2006 09:37:57 GMT (562kb)
astro-ph/0604328 [abs, ps, pdf, other] :: Title: Outflows from the high-mass protostars NGC 7538 IRS1/2 observed with bispectrum speckle interferometry -- Signatures of flow precession
Authors: S. Kraus, Y. Balega, M. Elitzur, K.-H. Hofmann, Th. Preibisch, A. Rosen, D. Schertl, G. Weigelt, E. T. Young
Comments: 20 pages; 8 figures; Accepted by A&A on April 10, 2006; Image quality reduced due to astro-ph file size limitations; Please download a version with high-quality images from this http URL
Note: replaced with revised version Wed, 26 Apr 2006 19:05:52 GMT (932kb)
astro-ph/0604444 [abs, ps, pdf, other] :: Title: The Survey for Ionization in Neutral Gas Galaxies: I. Description and Initial Results
Authors: Gerhardt R. Meurer, D.J. Hanish, H.C. Ferguson, P.M. Knezek, V.A. Kilborn, M.E. Putman, R.C. Smith, B. Koribalski, M. Meyer, M.S. Oey, E.V. Ryan-Weber, M.A. Zwaan, T.M. Heckman, R.C. Kennicutt, Jr., J.C. Lee, R.L. Webster, J. Bland-Hawthorn M.A. Dopita, K.C. Freeman, M.T. Doyle, M.J. Drinkwater, L. Staveley-Smith, J. Werk
Comments: 28 pages, ApJS, in press. Full resolution version with all panels of Fig. 8 available at this http URL . On line data available at this http URL . Author list corrected
Note: replaced with revised version Wed, 26 Apr 2006 13:25:33 GMT (745kb)
astro-ph/0604506 [abs, ps, pdf, other] :: Title: Close Galaxy Counts as a Probe of Hierarchical Structure Formation
Authors: Joel C. Berrier, James S. Bullock, Elizabeth J. Barton, Heather D. Guenther, Andrew R. Zentner, Risa H. Wechsler
Comments: 16 pages, 16 figures, submitted to ApJ, minor change to figure 10, figure captions updated
Note: replaced with revised version Wed, 26 Apr 2006 17:38:23 GMT (104kb)
gr-qc/0509057 [abs, ps, pdf, other] :: Title: Acoustic horizons in axially symmetric relativistic accretion
Authors: Hrvoje Abraham (1), Neven Bilic (1), Tapas K. Das (2) ((1) Rudjer Boskovic Institute, Zagreb, Croatia, (2) Harish Chandra Research Institute, Allahabadh, India)
Comments: 29 pages, 12 figures, significantly revised, sections on phonon propagation, phonon quantization, non-axisymmetric accretion and acoustic superradiance added, references added; to appear in Class. Quant. Grav. without section 2.4 which has been kept here for pedagogical reasons; section 2.4 slightly altered, misprints corrected
Journal-ref: Class.Quant.Grav. 23 (2006) 2371-2393
Note: replaced with revised version Wed, 26 Apr 2006 08:37:25 GMT (667kb)
hep-th/0512056 [abs, ps, pdf, other] :: Title: Brane gas-driven bulk expansion as a precursor stage to brane inflation
Authors: Natalia Shuhmaher, Robert Brandenberger
Comments: 5 pages, no figures, same as published one
Journal-ref: Phys. Rev. Lett. 96, 161301 (2006)
Note: replaced with revised version Tue, 25 Apr 2006 21:06:02 GMT (10kb)
physics/0604114 [abs, pdf] :: Title: Direct reading of charge multipliers with a self-triggering CMOS analog chip with 105k pixels at 50 micron pitch
Authors: R. Bellazzini, G. Spandre, M. Minuti, L. Baldini, A. Brez, F. Cavalca, L. Latronico, N. Omodei, M. M. Massai, C. Sgro, E. Costa, P. Soffitta F. Krummenacher, R. DeOliveira
Comments: 14 pages, 18 figures, to be submitted to Nuclear Instruments and methode A
Subj-class: Instrumentation and Detectors
Note: replaced with revised version Wed, 26 Apr 2006 08:58:36 GMT (718kb)

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hep-ph/0604198 [abs, ps, pdf, other] :: Title: Supersymmetric Hybrid Inflation with Non-Minimal Kahler potential
Authors: M. Bastero-Gil, S. F. King, Q. Shafi
Comments: 14 pages, 5 figures; footnote and reference added

Minimal supersymmetric hybrid inflation based on a minimal Kahler potential predicts a spectral index n_s\gsim 0.98. On the other hand, WMAP three year data prefers a central value n_s \approx 0.95. We propose a class of supersymmetric hybrid inflation models based on the same minimal superpotential but with a non-minimal Kahler potential. Including radiative corrections using the one-loop effective potential, we show that the prediction for the spectral index is sensitive to the small non-minimal corrections, and can lead to a significantly red-tilted spectrum, in agreement with WMAP.
hep-th/0604164 [abs, ps, pdf, other] :: Title: On the consistency of Lorentz invariance violation in QED induced by fermions in constant axial-vector background
Authors: J. Alfaro, A.A. Andrianov, M. Cambiaso, P. Giacconi, R. Soldati
Comments: 10 pages, misprints removed

We show that the induced parity--even Lorentz invariance violation can be unambiguously calculated in the physically justified and minimally broken dimensional regularization scheme, suitably tailored for a spontaneous Lorentz symmetry breaking in a field theory model. The quantization of the Lorentz invariance violating quantum electrodynamics is briefly examined and shown to be consistent either for a light--like cosmic anisotropy axial--vector or for a time--like one, when in the presence of a bare photon mass.

Replacements

astro-ph/0302138 [abs, ps, pdf, other] :: Title: CMBEASY:: an Object Oriented Code for the Cosmic Microwave Background
Authors: Michael Doran
Comments: 7 pages, 5 figures, matches published version, code at this http URL
Journal-ref: JCAP 0510 (2005) 011
Note: replaced with revised version Thu, 27 Apr 2006 10:28:20 GMT (190kb)
astro-ph/0407375 [abs, ps, pdf, other] :: Title: Effects of differential and uniform rotation on nonlinear electromotive force in a turbulent flow
Authors: I. Rogachevskii, N. Kleeorin
Comments: 17 pages, 2 Figures, revised version, REVTEX4
Note: replaced with revised version Thu, 27 Apr 2006 10:49:41 GMT (42kb)
astro-ph/0511141 [abs, ps, pdf, other] :: Title: Redshift space 21 cm power spectra from reionization
Authors: Xiaomin Wang, Wayne Hu
Comments: 13 pages, 10 figures. Revised version. Includes minor changes. Adds appendix on accomodating a distribution of radii for the HII regions. Accepted for publication in ApJ
Note: replaced with revised version Thu, 27 Apr 2006 14:53:29 GMT (377kb)
astro-ph/0512509 [abs, ps, pdf, other] :: Title: Constraints on sterile neutrino as a dark matter candidate from the diffuse X-ray background
Authors: A. Boyarsky, A. Neronov, O.Ruchayskiy, M.Shaposhnikov
Comments: 6 pages, 2 figures; v2 -- journal version. References added, discussion expanded
Note: replaced with revised version Thu, 27 Apr 2006 16:34:59 GMT (38kb)
astro-ph/0601457 [abs, ps, pdf, other] :: Title: The Chang-Refsdal Lens Revisited
Authors: J. An (1,2), N. W. Evans (2) ((1) MKI-MIT, (2) IoA Cambridge)
Comments: to appear in MNRAS (including 6 figures, 3 appendices; v2 - minor update with corrected typos etc.)
Subj-class: Astrophysics; Mathematical Physics
Note: replaced with revised version Wed, 26 Apr 2006 21:42:06 GMT (81kb)
astro-ph/0602153 [abs, ps, pdf, other] :: Title: Detecting filaments in the ultra-high energy cosmic ray distribution
Authors: Diego Harari, Silvia Mollerach, Esteban Roulet
Comments: minor changes, matching the published version in Astroparticle Physics
Note: replaced with revised version Thu, 27 Apr 2006 19:20:07 GMT (93kb)
astro-ph/0604017 [abs, ps, pdf, other] :: Title: On the Environmental Dependence of Galaxy Properties Established by the Initial Cosmological Conditions
Authors: Jounghun Lee (Seoul National Univ.)
Comments: accepted version, ApJL in press, all typos corrected
Note: replaced with revised version Wed, 26 Apr 2006 22:59:41 GMT (12kb)
astro-ph/0604055 [abs, ps, pdf, other] :: Title: Can the Brans-Dicke gravity possibly with $\Lambda$ be a theory of Dark Matter?
Authors: Hongsu Kim
Comments: 24 pages, 1 figure, Revtex4, some errors and typos corrected
Note: replaced with revised version Thu, 27 Apr 2006 05:28:44 GMT (37kb)
astro-ph/0604516 [abs, ps, pdf, other] :: Title: The pattern of accretion flow onto Sgr A*
Authors: Monika Moscibrodzka, Tapas K. Das, Bozena Czerny
Comments: 10 pages,7 figures, accepted to MNRAS, references added to section 3.5 and to bibliography
Note: replaced with revised version Thu, 27 Apr 2006 12:43:47 GMT (76kb)
astro-ph/0604521 [abs, ps, pdf, other] :: Title: Radio Constraints on Activity in Young Brown Dwarfs
Authors: R. A. Osten, R. Jayawardhana
Comments: accepted, ApJL replaced earlier version: typo in astro-ph author field
Note: replaced with revised version Thu, 27 Apr 2006 16:05:38 GMT (21kb)
gr-qc/0603005 [abs, ps, pdf, other] :: Title: Theoretical Basis for a Solution to the Cosmic Coincidence Problem
Authors: Christophe Nickner
Comments: 21 pages, REVTeX4 source, v.4: minor changes
Note: replaced with revised version Thu, 27 Apr 2006 19:48:24 GMT (39kb)
gr-qc/0603115 [abs, ps, pdf, other] :: Title: Gravitational wave bursts from cosmic (super)strings: Quantitative analysis and constraints
Authors: Xavier Siemens, Jolien Creighton, Irit Maor, Saikat Ray Majumder, Kipp Cannon, Jocelyn Read
Comments: Replaced with version accepted for publication in PRD
Note: replaced with revised version Wed, 26 Apr 2006 20:28:21 GMT (60kb)
hep-th/0602097 [abs, ps, pdf, other] :: Title: On compatibility of string effective action with an accelerating universe
Authors: Ishwaree P. Neupane
Comments: 16 pages, 7 figures; small changes improving explanations, significant changes in notations, new section, appendix and refs added
Note: replaced with revised version Thu, 27 Apr 2006 11:01:02 GMT (373kb)

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e-mail To: physics@arXiv.org, Subject: subscribe
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Third-party submissions cause excessive problems.
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E-mail submissions have been discontinued in favor of better support for
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