Cross-listings

gr-qc/0606082 [abs, ps, pdf, other] :: Title: Loop cosmological implications of a non-minimally coupled scalar field
Authors: Martin Bojowald, Mikhail Kagan
Comments: 10 pages, 4 figures

Non-minimal actions with matter represented by a scalar field coupled to gravity are considered in the context of a homogeneous and isotropic universe. The coupling is of the form $-\xi/2 \phi^2 R$. The possibility of successful inflation is investigated taking into account features of loop cosmology. For that end a conformal transformation is performed. That brings the theory into the standard minimally coupled form (Einstein frame) with some effective field and its potential. Both analytical and numerical estimates show that a negative coupling constant is preferable for successful inflation. Moreover, provided fixed initial conditions, larger $|\xi|$ leads to a greater number of {\em e}-folds. The latter is obtained for a reasonable range of initial conditions and the coupling parameter and indicates a possibility for successful inflation.
gr-qc/0606088 [abs, ps, pdf, other] :: Title: Search for continuous gravitational waves: metric of the multi-detector F-statistic
Authors: Reinhard Prix
Comments: 20 pages, 15 figures, revtex4

We derive the parameter-space metric of the multi-detector F-statistic, which is the optimal detection statistic for continuous gravitational waves in stationary Gaussian noise. We find that there is a family of F-statistic metrics, parametrized by the (unknown) amplitude parameters. We explicitly derive the maximal mismatch-range of this metric family, and we introduce a corresponding "average" F-metric. We show that the multi-detector metric consists of noise-weighted averages of single-detector contributions, which implies that the number of templates required to cover the parameter space does not scale with the number of detectors. Contrary to using a longer observation time, combining more detectors (of similar sensitivity) is therefore the computationally cheapest way to improve the sensitivity of a coherent wide-parameter search for continuous gravitational waves. We explicitly compute the F-statistic metric (family) for signals from isolated spinning neutron stars, and we evaluate the quality of different metric approximations in a Monte-Carlo study. We also compare the metric predictions to the measured mismatches and identify two regimes in which the metric is not a good description of the parameter-space structure.
hep-th/0606226 [abs, ps, pdf, other] :: Title: Quantum effects in gravitational wave signals from cuspy superstrings
Authors: Diego Chialva (SISSA), Thibault Damour (IHES)
Comments: 16 pages, no figure

We study the gravitational emission, in Superstring Theory, from fundamental strings exhibiting cusps. The classical computation of the gravitational radiation signal from cuspy strings features strong bursts in the special null directions associated to the cusps. We perform a quantum computation of the gravitational radiation signal from a cuspy string, as measured in a gravitational wave detector using matched filtering and located in the special null direction associated to the cusp. We study the quantum statistics (expectation value and variance) of the measured filtered signal and find that it is very sharply peaked around the classical prediction. Ultimately, this result follows from the fact that the detector is a low-pass filter which is blind to the violent high-frequency quantum fluctuations of both the string worldsheet, and the incoming gravitational field.

Replacements

astro-ph/0507548 [abs, ps, pdf, other] :: Title: Toward the Detection of Transiting Hot Earths and Hot Neptunes in Open Clusters
Authors: Joshua Pepper, B. Scott Gaudi
Comments: 7 pages, 3 figures, accepted to Acta Astronomica
Journal-ref: Acta Astronomica, Vol 56, No. 2, (2006)
Note: replaced with revised version Fri, 23 Jun 2006 17:10:01 GMT (36kb)
astro-ph/0508566 [abs, ps, pdf, other] :: Title: Electrodynamics in Friedmann-Robertson-Walker Universe: Maxwell and Dirac fields in Newman-Penrose formalism
Authors: U. Khanal
Comments: 18 pages including 9 figures
Journal-ref: Class. Quantum Grav. 23 (2006) 4353-4368
Note: replaced with revised version Fri, 23 Jun 2006 03:30:29 GMT (84kb)
astro-ph/0511651 [abs, ps, pdf, other] :: Title: Dynamical friction on satellite galaxies
Authors: Michiko Fujii, Yoko Funato, Junichiro Makino
Comments: 15 pages, 10 figures, submitted to PASJ; v2: 14 pages, 13 figures, accepted by PASJ
Note: replaced with revised version Fri, 23 Jun 2006 12:11:10 GMT (441kb)
astro-ph/0512416 [abs, ps, pdf, other] :: Title: The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
Authors: Risa H. Wechsler (1), Andrew R. Zentner (1), James S. Bullock (2), Andrey V. Kravtsov (1), Brandon Allgood ((1) KICP, U. Chicago, (2) UC Irvine)
Comments: 13 pages, 6 figures; Figure 3 best viewed in color, ApJ in press (replaced to match accepted version, updated literature discussion)
Note: replaced with revised version Fri, 23 Jun 2006 16:03:02 GMT (106kb)
astro-ph/0601669 [abs, ps, pdf, other] :: Title: A simple analytical model for dark matter halo structure and adiabatic contraction
Authors: E. Vasiliev
Comments: 5 pages, 3 figures. v3 - major improvements, another halo model introduced, discussion extended
Journal-ref: JETP Letters 84, No.2 (2006)
Note: replaced with revised version Fri, 23 Jun 2006 07:50:22 GMT (68kb)
astro-ph/0603280 [abs, ps, pdf, other] :: Title: Stellar remnants in galactic nuclei: mass segregation
Authors: Marc Freitag (1 and 2) Pau Amaro-Seoane (3) Vassiliki Kalogera (1) ((1) Department of Physics and Astronomy, Northwestern University (2) Institute of Astronomy, University of Cambridge (3) Max Planck Intitut fuer Gravitationsphysik, Potsdam)
Comments: 28 pages, 24 figures, ApJ accepted. Small changes to follow referee's suggestions
Note: replaced with revised version Thu, 22 Jun 2006 22:46:47 GMT (360kb)
astro-ph/0603531 [abs, ps, pdf, other] :: Title: Magnetic Field Structure from Synchrotron Polarization
Authors: Rainer Beck (MPI fuer Radioastronomie, Bonn, Germany)
Comments: 18 pages, 9 figures. To be published in "Polarisation 2005" (Proc. of the conference held in Paris, 12-15 Sept. 2005), eds. F. Boulanger and M.A. Miville-Deschenes, EAS Publications Series; Two small typos corrected, one reference added and three updated 23/06/2006
Note: replaced with revised version Fri, 23 Jun 2006 08:05:21 GMT (632kb)
astro-ph/0603819 [abs, ps, pdf, other] :: Title: Quasar Luminosity Functions from Joint Evolution of Black Holes and Host Galaxies
Authors: A. Lapi (1), F. Shankar (3), J. Mao (1), G.L. Granato (2,1), L. Silva (4), G. De Zotti (2,1), L. Danese (1,2) (1-SISSA/ISAS Trieste, Italy; 2-INAF, Oss. Astron. Padova, Italy; 3-Ohio State Univ., Columbus, USA; 4-INAF, Oss. Astron. Trieste, Italy)
Comments: 15 pages, 8 figures, uses REVTeX 4 + emulateapj.cls and apjfonts.sty. Version revised following referee's comments. Accepted on ApJ
Note: replaced with revised version Fri, 23 Jun 2006 13:40:12 GMT (110kb)
astro-ph/0604016 [abs, ps, pdf, other] :: Title: The Interpretation and Implication of the Afterglow of GRB 060218
Authors: Yi-Zhong Fan, Tsvi Piran, Dong Xu
Comments: A brand new version but some conclusions are unchanged. The concept "central engine afterglow" has been introduced
Note: replaced with revised version Fri, 23 Jun 2006 10:59:20 GMT (32kb)
astro-ph/0604353 [abs, ps, pdf, other] :: Title: Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
Authors: A. Markowitz (1 and 2), J. Reeves (1 and 3), V. Braito (1 and 3) ((1) NASA/GSFC, (2) NASA Post-doc Research Associate, (3) Johns Hopkins University)
Comments: Accepted for publication in The Astrophysical Journal; 25 pages; 11 figures
Note: replaced with revised version Thu, 22 Jun 2006 20:34:49 GMT (174kb)
astro-ph/0604447 [abs, ps, pdf, other] :: Title: Implications of WMAP 3 Year Data for the Sources of Reionization
Authors: Marcelo A. Alvarez, Paul R. Shapiro, Kyungjin Ahn, Ilian T. Iliev
Comments: 4 pages, 3 figures, Published in ApJ Letters, revised to match published version
Journal-ref: Astrophys.J. 644 (2006) L101-L104
Note: replaced with revised version Fri, 23 Jun 2006 07:50:23 GMT (35kb)
astro-ph/0605537 [abs, ps, pdf, other] :: Title: Modeling dark energy with a top-down approach
Authors: Duane A. Dicus, Wayne W. Repko
Comments: Text modified in light of additional reference
Note: replaced with revised version Thu, 22 Jun 2006 22:35:55 GMT (43kb)
astro-ph/0605713 [abs, ps, pdf, other] :: Title: The high velocity outflow in NGC6334I
Authors: S. Leurini, P. Schilke, B. Parise, F. Wyrowski, R. Guesten, S. Philipp
Comments: APEX A&A special issue, accepted
Note: replaced with revised version Fri, 23 Jun 2006 07:34:11 GMT (159kb)
astro-ph/0605714 [abs, ps, pdf, other] :: Title: APEX 1 mm line survey of the Orion Bar
Authors: S. Leurini (1), R. Rolffs (1), S. Thorwirth (1), B. Parise (1), P. Schilke (1), C. Comito (1), F. Wyrowski (1), R. Güsten\inst1, P. Bergman (2), K. M Menten (1), L.-AA. Nyman (2) ((1) Max Planck Insitut fuer Radioastronomie, (2) European Southern Observatory)
Comments: APEX A&A special issue, accepted
Note: replaced with revised version Fri, 23 Jun 2006 08:28:06 GMT (78kb)
astro-ph/0606341 [abs, ps, pdf, other] :: Title: Remarks on statistical errors in equivalent widths
Authors: Klaus Vollmann, Thomas Eversberg
Comments: 4 pages, 1 figure, accepted by Astronomical Notes
Journal-ref: Astron.Nachr. 88 (2006) 789-792
Note: replaced with revised version Fri, 23 Jun 2006 10:51:41 GMT (60kb)
astro-ph/0606533 [abs, ps, pdf, other] :: Title: Can A Galaxy Redshift Survey Measure Dark Energy Clustering?
Authors: Masahiro Takada (Tohoku Univ., Japan)
Comments: 14 pages, 7 figures; some typos corrected and references added
Note: replaced with revised version Fri, 23 Jun 2006 06:34:52 GMT (85kb)
gr-qc/0603012 [abs, ps, pdf, other] :: Title: Shear dynamics in Bianchi I cosmologies with R^n-gravity
Authors: Jannie A Leach, Sante Carloni, Peter K S Dunsby
Comments: 25 pages LaTeX, 6 figures. Revised to match the final version accepted for publication in CQG
Note: replaced with revised version Fri, 23 Jun 2006 09:58:26 GMT (198kb)
hep-th/0605256 [abs, ps, pdf, other] :: Title: Modification of Decay Constants of Superstring Axions: Effects of Flux Compactification and Axion Mixing
Authors: Ian-Woo Kim, Jihn E. Kim
Comments: 6 pages with 3 figures, revtex; figure added,section of axion mixing modified
Note: replaced with revised version Fri, 23 Jun 2006 00:59:15 GMT (51kb)
math-ph/0511043 [abs, ps, pdf, other] :: Title: Effective Equations of Motion for Quantum Systems
Authors: Martin Bojowald, Aureliano Skirzewski
Comments: 31 pages; v2: a new example, new references
Subj-class: Mathematical Physics
Note: replaced with revised version Fri, 23 Jun 2006 14:03:06 GMT (32kb)

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Cross-listings

hep-th/0603070 [abs, ps, pdf, other] :: Title: Bethe-Salpeter approach for relativistic positronium in a strong magnetic field
Authors: A.E. Shabad, V.V. Usov
Comments: 35 pages, minor corrections

We study the electron-positron system in a strong magnetic field using the differential Bethe-Salpeter equation in the ladder approximation. We derive the fully relativistic two-dimensional form that the four-dimensional Bethe-Salpeter equation takes in the limit of asymptotically strong constant and homogeneous magnetic field. An ultimate value for the magnetic field is determined, which provides the full compensation of the positronium rest mass by the binding energy in the maximum symmetry state and vanishing of the energy gap separating the electron-positron system from the vacuum. The compensation becomes possible owing to the falling to the center phenomenon that occurs in a strong magnetic field because of the dimensional reduction. The solution of the Bethe-Salpeter equation corresponding to the vanishing energy-momentum of the electron-positron system is obtained.
hep-th/0606162 [abs, ps, pdf, other] :: Title: (Quasi)-exactly solvable quasinormal modes
Authors: Hing-Tong Cho, Choon-Lin Ho (Tamkang Univ.)
Comments: 4 pages, 1 figure
Subj-class: High Energy Physics - Theory; Mathematical Physics

We extend the theory of quasi-exactly solvable (QES) models with real energies to include quasinormal modes with complex energies. We demonstrate that it is possible to find new potentials which admit exactly solvable or QES quasinormal modes by suitable complexification of parameters defining the QES potentials. Particularly, we obtain one QES and four exactly solvable potentials out of the five one-dimensional QES systems based on the $sl_2$ algebra.
hep-th/0606232 [abs, ps, pdf, other] :: Title: Quantum Gravity and Higher Curvature Actions
Authors: Martin Bojowald, Aureliano Skirzewski
Comments: 28 pages, based on a lecture course at the 42nd Karpacz Winter School of Theoretical Physics ``Current Mathematical Topics in Gravitation and Cosmology,'' Ladek, Poland, February 6-11, 2006

Effective equations are often useful to extract physical information from quantum theories without having to face all technical and conceptual difficulties. One can then describe aspects of the quantum system by equations of classical type, which correct the classical equations by modified coefficients and higher derivative terms. In gravity, for instance, one expects terms with higher powers of curvature. Such higher derivative formulations are discussed here with an emphasis on the role of degrees of freedom and on differences between Lagrangian and Hamiltonian treatments. A general scheme is then provided which allows one to compute effective equations perturbatively in a Hamiltonian formalism. Here, one can expand effective equations around any quantum state and not just a perturbative vacuum. This is particularly useful in situations of quantum gravity or cosmology where perturbations only around vacuum states would be too restrictive. The discussion also demonstrates the number of free parameters expected in effective equations, used to determine the physical situation being approximated, as well as the role of classical symmetries such as Lorentz transformation properties in effective equations. An appendix collects information on effective correction terms expected from loop quantum gravity and string theory.
math.ST/0606599 [abs, ps, pdf, other] :: Title: Asymptotics for Spherical Needlets
Authors: P. Baldi, G. Kerkyacharian, D. Marinucci, D. Picard
Comments: 35 pages with 2 figures
Subj-class: Statistics; Other
MSC-class: 62M40; 60F05; 60F17; 62G20

The main point of this paper is the investigation of invariant random fields on the sphere using a new type of spherical wavelets, called needlets. These are compactly supported in frequency and enjoy excellent localization properties in space, with quasi-exponentially decaying tails. We show that, for random fields on the sphere, the needlet coefficients are asymptotically uncorrelated for any fixed angular distance. This property is used to derive CLT and functional CLT convergence results for polynomial functionals of the needlet coefficients: here the asymptotic theory is considered in the high frequency sense. Our proposals emerge from strong empirical motivations, especially in connection with the analysis of cosmological data sets.

Replacements

astro-ph/0412107 [abs, ps, pdf, other] :: Title: The Shapes of Atomic Lines from the Surfaces of Weakly Magnetic Rotating Neutron Stars and Their Implications
Authors: Sudip Bhattacharyya, M. Coleman Miller, Frederick K. Lamb
Comments: Revised version, 16 pages, 6 figures, published in ApJ
Journal-ref: The Astrophysical Journal, 644 (2006) 1085-1089
Note: replaced with revised version Mon, 26 Jun 2006 15:29:11 GMT (391kb)
astro-ph/0508383 [abs, ps, pdf, other] :: Title: A blind estimation of the power spectrum of CMB anisotropy from WMAP
Authors: Rajib Saha (IUCAA, IIT Kanpur), Pankaj Jain (IIT Kanpur), Tarun Souradeep (IUCAA)
Comments: 4 pages, 3 figures, Matches version accepted to ApJ. Lett. Minor editing; Level of bias at low multipoles mentioned. Suppl. details at this http URL
Note: replaced with revised version Sun, 25 Jun 2006 19:20:58 GMT (281kb)
astro-ph/0601558 [abs, ps, pdf, other] :: Title: Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars
Authors: Gordon T. Richards, Mark Lacy, Lisa J. Storrie-Lombardi, Patrick B. Hall, S. C. Gallagher, Dean C. Hines, Xiaohui Fan, Casey Papovich, Daniel E. Vanden Berk, George B. Trammell, Donald P. Schneider, Marianne Vestergaard, Donald G. York, Sebastian Jester, Scott F. Anderson, Tamas Budavari, Alexander S. Szalay
Comments: 52 pages, 24 figures (12 color), 3 tables, ApJS accepted; higher resolution accepted version available at this ftp URL
Note: replaced with revised version Mon, 26 Jun 2006 14:47:39 GMT (553kb)
astro-ph/0602508 [abs, pdf] :: Title: Global albedo particles: a new approach from loss cone distributions
Authors: Kaiti Wang (1), Ming-Huey A. Huang (2) ((1)Division of Natural Sciences, Department of General Education, Ming Hsin University of Science and Technology, Hsin-Chu, Taiwan (2) General Education Center, National United University, Miao-Li, Taiwan)
Comments: 15 pages, 4 Figures
Note: replaced with revised version Mon, 26 Jun 2006 01:45:15 GMT (221kb)
astro-ph/0603222 [abs, ps, pdf, other] :: Title: Dust Extinction of Gamma-ray Burst Host Galaxies: Identification of Two Classes?
Authors: Shilun Chen, Aigen Li, Daming Wei
Comments: 15 pages, 3 figures. Substantially revised with the same arguments; accepted for publication in The Astrophysical Journal Letters
Note: replaced with revised version Mon, 26 Jun 2006 10:28:18 GMT (64kb)
astro-ph/0603406 [abs, ps, pdf, other] :: Title: Statistical Isotropy of CMB Polarization Maps
Authors: Soumen Basak, Amir Hajian, Tarun Souradeep
Comments: 6 pages, 2 figures, Conclusions & results unchanged; Extension to cutsky included (discussion & references added); Matches version accepted to Phys. Rev. D Rapid Comm
Note: replaced with revised version Sun, 25 Jun 2006 16:02:13 GMT (15kb)
astro-ph/0603435 [abs, ps, pdf, other] :: Title: The Cavity of Cygnus A
Authors: A. S. Wilson, David A. Smith, A. J. Young
Comments: 5 pages, 3 figures, published in The Astrophysical Journal Letters 2006 Volume 644 Page 9. Replaces previous version with minor corrections to numerical factors
Note: replaced with revised version Sun, 25 Jun 2006 22:37:21 GMT (454kb)
astro-ph/0603519 [abs, ps, pdf, other] :: Title: GRBs, SGRs by UHE leptons showering, blazing and re-brightening by precessing Gamma Jets in-off axis
Authors: D.Fargion, M.Grossi
Comments: 9 pages, 10 figures, Submitted for pubblication
Subj-class: Astrophysics; Space Physics
Note: replaced with revised version Sat, 24 Jun 2006 15:30:58 GMT (388kb)
astro-ph/0603696 [abs, ps, pdf, other] :: Title: Redshift and Shear Calibration: Impact on Cosmic Shear Studies and Survey Design
Authors: Ludovic Van Waerbeke, Martin White, Henk Hoekstra, Catherine Heymans
Comments: Accepted version to Astroparticle Physics
Note: replaced with revised version Mon, 26 Jun 2006 06:00:59 GMT (74kb)
astro-ph/0604225 [abs, ps, pdf, other] :: Title: Non-existence of self-similar solutions containing a black hole in a universe with a stiff fluid or scalar field or quintessence
Authors: Tomohiro Harada, Hideki Maeda, B. J. Carr
Comments: 17 pages, 6 figures, Accepted for Publication in Phys. Rev. D
Note: replaced with revised version Mon, 26 Jun 2006 09:06:19 GMT (137kb)
astro-ph/0604431 [abs, ps, pdf, other] :: Title: Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
Authors: S. Capozziello, S. Nojiri, S.D. Odintsov, A. Troisi
Comments: 11 pages, 1 figure
Note: replaced with revised version Sat, 24 Jun 2006 13:22:20 GMT (19kb)
astro-ph/0604446 [abs, ps, pdf, other] :: Title: Flux-transport dynamos with Lorentz force feedback on differential rotation and meridional flow: Saturation mechanism and torsional oscillations
Authors: Matthias Rempel (HAO/NCAR, Boulder CO, USA)
Comments: 15 pages, 12 figures, Accepted for publication in ApJ August 10 issue; corrected typos, corrected reference
Note: replaced with revised version Mon, 26 Jun 2006 16:13:39 GMT (846kb)
astro-ph/0605026 [abs, ps, pdf, other] :: Title: The Origin of the Bifurcation in the Sagittarius Stream
Authors: M. Fellhauer (1), V. Belokurov (1), N. W. Evans (1), M. I. Wilkinson (1), D. B. Zucker (1), G. Gilmore (1), M. J. Irwin (1), D. M. Bramich (1), S. Vidrih (1), R. F. G. Wyse (2), T. C. Beers (3), J. Brinkmann (4) ((1) Cambridge, (2) JHU, (3) Michigan State University, (4) Apache Point Observatory)
Comments: ApJ, in press
Note: replaced with revised version Mon, 26 Jun 2006 15:56:37 GMT (992kb)
astro-ph/0605319 [abs, ps, pdf, other] :: Title: Isophotal Shapes of Elliptical/S0 Galaxies from the Sloan Digital Sky Survey
Authors: C. N. Hao, S. Mao, Z. G. Deng, X. Y. Xia, Hong Wu
Comments: 25 pages, 22 figures, accepted for publication in MNRAS. Revised to match the final version accepted for publication in MNRAS. A high resolution version is available at this http URL
Note: replaced with revised version Sun, 25 Jun 2006 12:30:16 GMT (972kb)
astro-ph/0605320 [abs, ps, pdf, other] :: Title: Isothermal shocks in Abell 2199 and 2A 0335+096?
Authors: J.S. Sanders, A.C. Fabian (Institute of Astronomy, Cambridge)
Comments: 5 pages, accepted by MNRAS, includes minor changes suggested by referee
Note: replaced with revised version Mon, 26 Jun 2006 15:26:26 GMT (699kb)
astro-ph/0606034 [abs, ps, pdf, other] :: Title: Stability in MaVaN Models
Authors: Christopher Spitzer
Comments: 5 pages, 3 figures, updated references
Note: replaced with revised version Mon, 26 Jun 2006 06:39:03 GMT (159kb)
astro-ph/0606311 [abs, ps, pdf, other] :: Title: Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S
Authors: The H.E.S.S. Collaboration: F.A. Aharonian, et al
Comments: 9 pages, 4 figures, accepted for publication in A&A Replaced version: Fig 3 RA axis labels corrected (13h -> 14h)
Note: replaced with revised version Mon, 26 Jun 2006 09:46:11 GMT (528kb)
astro-ph/0606321 [abs, ps, pdf, other] :: Title: Spitzer Space Telescope Infrared Imaging and Spectroscopy of the Crab Nebula
Authors: Tea Temim (1), Robert D. Gehrz (1), Charles E. Woodward (1), Thomas L. Roellig (2), Nathan Smith (3 and 6), Lawrence R. Rudnick (1), Elisha F. Polomski (1), Kris Davidson (1), Lunming Yuen (4), Takashi Onaka (5) ((1) Department of Astronomy, University of Minnesota, (2) NASA Ames Research Center, Moffett Field, CA, (3) Center for Astrophysics and Space Astronomy, University of Colorado, (4) Technosciences Corp., Moffett Field, CA, (5) University of Tokyo, Tokyo, Japan, (6) Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory (NOAO))
Comments: 21 pages, 4 tables, 16 figures
Note: replaced with revised version Fri, 23 Jun 2006 20:10:00 GMT (482kb)
astro-ph/0606489 [abs, ps, pdf, other] :: Title: Galactic Nuclei and Jets in Wave Gravity
Authors: Kris Krogh
Comments: 14 pages, LaTeX2e, no figures; minor text revisions, added acknowledgements
Note: replaced with revised version Sun, 25 Jun 2006 16:27:50 GMT (14kb)
astro-ph/0606582 [abs, ps, pdf, other] :: Title: The Star-Forming Region NGC 346 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations I. Photometry
Authors: D. A. Gouliermis (Max-Planck-Institut fuer Astronomie, Heidelberg - MPIA), A. E. Dolphin (Steward Observatory, Tuscon), W. Brandner (MPIA), Th. Henning (MPIA)
Comments: 8 pages, 5 figures, Accepted for publication in The Astrophysical Journal Supplement Series, A high-resolution version can be found at: this http URL
Note: replaced with revised version Mon, 26 Jun 2006 11:29:53 GMT (617kb)
astro-ph/0606594 [abs, ps, pdf, other] :: Title: Fe-bump instability: the excitation of pulsations in subdwarf B and other low-mass stars
Authors: C.S. Jeffery, H. Saio
Comments: MNRAS, in press, 16 pages, 13 figures
Note: replaced with revised version Mon, 26 Jun 2006 14:27:09 GMT (740kb)
gr-qc/0511117 [abs, ps, pdf, other] :: Title: Reality and causality in quantum gravity modified electrodynamics
Authors: Santiago A. Martinez, R. Montemayor, Luis F. Urrutia
Comments: 14 pages, LaTex, revised and enlarged version
Note: replaced with revised version Sun, 25 Jun 2006 14:45:15 GMT (18kb)
hep-lat/0604004 [abs, ps, pdf, other] :: Title: Deconfinement in dense 2-color QCD
Authors: Simon Hands, Seyong Kim, Jon-Ivar Skullerud
Comments: 15 pages, 23 figures, uses svjour.cls. Added a subsection on the approach to saturation; some minor modifications and added references. To be published in Eur.Phys.J.C
Note: replaced with revised version Mon, 26 Jun 2006 09:27:00 GMT (128kb)
hep-ph/0512350 [abs, ps, pdf, other] :: Title: Baryogenesis via Leptogenesis in presence of cosmic strings
Authors: Narendra Sahu, Pijushpani Bhattacharjee, Urjit A Yajnik
Comments: 23 pages, 5 figures, discussions added, journal version, to appear in NPB
Note: replaced with revised version Mon, 26 Jun 2006 13:36:42 GMT (104kb)
hep-ph/0605209 [abs, ps, pdf, other] :: Title: On the hadronic contribution to sterile neutrino production
Authors: Takehiko Asaka, Mikko Laine, Mikhail Shaposhnikov
Comments: 28 pages. v2: small clarifications added, published version
Journal-ref: JHEP 0606 (2006) 053
Note: replaced with revised version Mon, 26 Jun 2006 12:30:38 GMT (40kb)
hep-ph/0606075 [abs, ps, pdf, other] :: Title: Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale
Authors: Motoi Endo, Fuminobu Takahashi
Comments: 22 pages, 1 figure; minor changes
Note: replaced with revised version Mon, 26 Jun 2006 13:05:05 GMT (492kb)
hep-th/0507125 [abs, ps, pdf, other] :: Title: de Sitter thermodynamics and the braneworld
Authors: Gianluca Calcagni
Comments: 16 pages JHEP style, no figures. v2: references added; v3: typo corrected in Eq.(3.1), supersedes published version
Journal-ref: JHEP 0509 (2005) 060
Note: replaced with revised version Mon, 26 Jun 2006 09:54:06 GMT (16kb)

For subscribe options to combined physics archives,
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gr-qc/0507030 [abs, ps, pdf, other] :: Title: Gravitational waves from a dust disk around a Schwarzschild black hole
Authors: Hajime Sotani, Motoyuki Saijo
Comments: v1: 13 pages with 10 figures, revtex4.cls. Submitted to Physical Review D; v2: 13 pages with 12 figures, revtex4.cls. Physical Review D (2006) in press

We investigate gravitational waves from a dust disk around a Schwarzschild black hole to focus on whether we can extract any of its physical properties from a direct detection of gravitational waves. We adopt a black hole perturbation approach in a time domain, which is a satisfactory approximation to illustrate a dust disk in a supermassive black hole. We find that we can determine the radius of the disk by using the power spectrum of gravitational waves and that our method to extract the radius works for a disk of arbitrary density distribution. Therefore we believe a possibility exists for determining the radius of the disk from a direct observation of gravitational waves detected by the Laser Interferometer Space Antenna.
gr-qc/0606113 [abs, ps, pdf, other] :: Title: Coupled quintessence and curvature-assisted acceleration
Authors: Roger Bieli
Comments: 17 pages, no figures

Spatially homogeneous models with a scalar field non-minimally coupled to the space-time curvature or to the ordinary matter content are analysed with respect to late-time asymptotic behaviour, in particular to accelerated expansion and isotropization. It is found that a direct coupling to the curvature leads to asymptotic de Sitter expansion in arbitrary exponential potentials, thus yielding a positive cosmological constant although none is apparent in the potential. This holds true regardless of the steepness of the potential or the smallness of the coupling constant. For matter-coupled scalar fields, the asymptotics are obtained for a large class of positive potentials, generalizing the well-known cosmic no-hair theorems for minimal coupling. In this case it is observed that the direct coupling to matter does not impact the late-time dynamics essentially.
hep-ph/0606261 [abs, ps, pdf, other] :: Title: Neutrino chirality flip in a supernova and the bound on the neutrino magnetic moment
Authors: A.V. Kuznetsov, N.V. Mikheev (Yaroslavl State (P.G. Demidov) University, Russia)
Comments: 7 pages, LaTeX, 5 EPS figures, based on the talk presented by N.V. Mikheev at the XIV International Seminar Quarks'2006, St.-Petersburg, Repino, Russia, May 19-25, 2006, to appear in the Proceedings

The neutrino chirality-flip process under the conditions of the supernova core is investigated in detail with the plasma polarization effects in the photon propagator taken into account. It is shown that the contribution of the proton fraction of plasma is essential. New upper bounds on the neutrino magnetic moment are obtained: mu_nu < (0.5 - 1.1) 10^{-12} mu_B from the limit on the supernova core luminosity for nu_R emission, and mu_nu < (0.4 - 0.6) 10^{-12} mu_B from the limit on the averaged time of the neutrino spin-flip. The best astrophysical upper bound on the neutrino magnetic moment is improved by the factor of 3 to 7.
hep-th/0606110 [abs, ps, pdf, other] :: Title: Black hole formation from collisions of cosmic fundamental strings
Authors: R. Iengo, J. Russo
Comments: 22 pages, 4 figures. Added comments

We develop the general formalism for joining, splitting and interconnection of closed and open strings. As an application, we study examples of fundamental cosmic string collisions leading to gravitational collapse. We find that the interconnection of two strings of equal and opposite maximal angular momentum and arbitrarily large mass generically leads to the formation of black holes, provided their relative velocity is small enough.

Replacements

astro-ph/0511030 [abs, ps, pdf, other] :: Title: An optically thick inner corona geometry for the Very High State Galactic Black Hole XTE J1550-564
Authors: Chris Done, Aya Kubota
Comments: MNRAS accepted version, with major expansion of the discussion to include comments on comptonisation, extreme broad iron lines and high frequency QPO's. 18 pages, 8 figures
Note: replaced with revised version Tue, 27 Jun 2006 11:10:42 GMT (192kb)
astro-ph/0511090 [abs, ps, pdf, other] :: Title: Cosmic Shear Analysis with CFHTLS Deep data
Authors: E. Semboloni, Y. Mellier, L. van Waerbeke, H. Hoekstra, I. Tereno, K. Benabed, S. Gwyn, L. Fu, M.J. Hudson, R. Maoli, L. Parker
Comments: 14 pages, 16 figures, accepted A&A
Note: replaced with revised version Tue, 27 Jun 2006 10:30:05 GMT (118kb)
astro-ph/0512489 [abs, ps, pdf, other] :: Title: No Universality for Electron's Power-Law Index (p) in Gamma-Ray Bursts and Other Relativistic Sources
Authors: R.-F. Shen, P. Kumar, E. L. Robinson (U. of Texas at Ausin)
Comments: 19 pages, 6 figures, a larger Swift afterglow sample included
Note: replaced with revised version Tue, 27 Jun 2006 17:40:10 GMT (38kb)
astro-ph/0602159 [abs, ps, pdf, other] :: Title: A weak acceleration effect due to residual gravity in a multiply connected universe
Authors: Boudewijn F. Roukema (1), Stanislaw Bajtlik (2), Marek Biesiada (3), Agnieszka Szaniewska (1), Helena Jurkiewicz (1) ((1) Torun Centre for Astronomy, (2) CAMK, (3) University of Silesia)
Comments: 12 pages, 4 figures, submitted to Astronomy & Astrophysics; v2 includes 3D calculation and result
Note: replaced with revised version Tue, 27 Jun 2006 14:22:59 GMT (57kb)
astro-ph/0605587 [abs, ps, pdf, other] :: Title: A Quasi-Periodic Modulation of the Radio Light Curve of the Blazar PKS B0048-097
Authors: M. Kadler (MPIfR, GSFC), P.A. Hughes (Univ. Mich.), E. Ros (MPIfR), M.F. Aller (Univ. Mich.), H.D. Aller (Univ. Mich.)
Comments: 4 pages, 3 figures, fig. 1 is a color figure, accepted for publication in A&A
Note: replaced with revised version Tue, 27 Jun 2006 11:06:21 GMT (212kb)
astro-ph/0606337 [abs, ps, pdf, other] :: Title: HST/ACS Wide-Field Photometry of the Sombrero Galaxy Globular Cluster System
Authors: L. R. Spitler, S. S. Larsen, J. Strader, J. P. Brodie, D. A. Forbes, M. A. Beasley
Comments: 18 pages, including 23 figures and 4 tables. Accepted for publication in AJ. Updated Figure 20
Note: replaced with revised version Tue, 27 Jun 2006 07:33:41 GMT (230kb)
astro-ph/0606426 [abs, ps, pdf, other] :: Title: Long-term Variability in the Length of the Solar Cycle
Authors: Michael L. Rogers, Mercedes T. Richards, Donald St.P. Richards
Comments: The data plotted in the bottom panel of Figure 1 were obtained from <this ftp URL>. In that table, the data from 1700 to 1748 are listed as integers (with no decimal place) while all entries for the sunspot numbers for later years are given as real numbers (with one decimal place). Because of this difference in the way in which the data were listed, the plotting program used to generate the bottom panels of Figures 1 and 8 changed the 1700-1748 data so that the number of sunspots for those years was divided by 10. Consequently, the portions of the graphs for the years 1700-1748 in those two panels were incorrect in the first version of the paper. The plotting error has no impact on the conclusions drawn from the data analysis. Since these data were also plotted in Figure 8, we have replotted the bottom panels of Figures 1 and 8
Note: replaced with revised version Tue, 27 Jun 2006 18:35:01 GMT (237kb)
astro-ph/0606432 [abs, ps, pdf, other] :: Title: Spitzer/IRAC Photometry of M, L, and T Dwarfs
Authors: Brian M. Patten, John R. Stauffer, Adam Burrows, Massimo Marengo, Joseph L. Hora, Kevin L. Luhman, Sarah M. Sonnett, Todd J. Henry, Deepak Raghavan, S. Thomas Megeath, James Liebert, Giovanni G. Fazio
Comments: 32 pages, 18 figures, accepted for publication to ApJ: revised to adjust acknowledgments, add a few more references, and the correct typographical errors in text and tables 1 and 3 (note as binaries sds0926+5847 and 2ma1553+1532)
Note: replaced with revised version Tue, 27 Jun 2006 15:38:54 GMT (183kb)
astro-ph/0606488 [abs, ps, pdf, other] :: Title: INTEGRAL observations of AGN obscured by the Galactic Plane
Authors: M. Molina, A. Malizia, L. Bassani, A.J. Bird, A.J. Dean, R. Landi, A. De Rosa, R. Walter, E.J. Barlow, D.J. Clark, A.B. Hill, V. Sguera
Comments: 8 pages, 10 figures, accepted for pubblication on MNRAS
Note: replaced with revised version Tue, 27 Jun 2006 11:00:03 GMT (132kb)
astro-ph/0606559 [abs, ps, pdf, other] :: Title: Homotopy symmetry in the multiply connected twin paradox of special relativity
Authors: Boudewijn F. Roukema (1), Stanislaw Bajtlik (2) ((1) Torun Centre for Astronomy, (2) CAMK)
Comments: 18 pages, 8 figures, submitted to Journal of Cosmology and Astroparticle Physics (JCAP)
Note: replaced with revised version Tue, 27 Jun 2006 14:38:57 GMT (54kb)
gr-qc/0510015 [abs, ps, pdf, other] :: Title: A new perspective on Gravity and the dynamics of Spacetime
Authors: T. Padmanabhan
Comments: Based on the Essay selected for Honorable Mention in the Gravity Research Foundation Essay Contest, 2005; to appear in the special issue of IJMPD
Journal-ref: Int.J.Mod.Phys. D14 (2005) 2263-2270
Note: replaced with revised version Tue, 27 Jun 2006 17:56:20 GMT (9kb)
gr-qc/0606061 [abs, ps, pdf, other] :: Title: Gravity: A New Holographic Perspective
Authors: T. Padmanabhan
Comments: Plenary talk at the International Conference on Einstein's Legacy in the New Millennium, December 15 - 22, 2005, Puri, India; to appear in the Proceedings to be published in IJMPD; 16 pages; no figures
Note: replaced with revised version Tue, 27 Jun 2006 18:13:20 GMT (19kb)
cond-mat/0505274 [abs, ps, pdf, other] :: Title: Realistic time correlations in sandpiles
Authors: Marco Baiesi, Christian Maes
Comments: v3: accepted for publication, shorter title, some rephrased paragraphs, new connections to seismicity (7 pages, 4 figures)
Subj-class: Statistical Mechanics; Geophysics
Note: replaced with revised version Tue, 27 Jun 2006 15:43:50 GMT (120kb)

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Cross-listings

hep-ph/0606246 [abs, ps, pdf, other] :: Title: Cross section dependence of event rates at neutrino telescopes
Authors: S. Hussain, D. Marfatia, D. W. McKay, D. Seckel
Comments: 4 pages, 2 figures

We examine the dependence of event rates at neutrino telescopes on the neutrino-nucleon cross section for neutrinos with energy above 1 PeV. Simple scaling of the Standard Model cross sections leaves the rates of upward events essentially unchanged. Details, such as detector depth and cross section inelasticity, can influence rates. Numerical estimates of upward shower, muon and tau event rates in the IceCube detector confirm these results.
hep-ph/0606287 [abs, ps, pdf, other] :: Title: Implications of cosmic strings with time-varying tension on CMB and large scale structure
Authors: Kazuhide Ichikawa, Tomo Takahashi, Masahide Yamaguchi
Comments: 17 pages, 7 figures

We investigate cosmological evolution and implications of cosmic strings with time-dependent tension. We derive basic equations of time development of the correlation length and the velocity of such strings, based on the one scale model. Then, we find that, in the case where the tension depends on some power of the cosmic time, cosmic strings with time-dependent tension goes into the scaling solution if the power is lower than a critical value. We also discuss cosmic microwave background anisotropy and matter power spectra produced by these strings. The constraints on their tensions from the Wilkinson microwave anisotropy probe (WMAP) three year data and Sloan digital sky survey (SDSS) data are also given.
hep-ph/0606289 [abs, ps, pdf, other] :: Title: Probing Supersymmetric Parameters With Astrophysical Observations
Authors: Dan Hooper
Comments: Prepared for the 7th international UCLA symposium on sources and detection of dark matter and dark energy in the universe (DM 2006) 2006, Marina del Rey, California, 22-24 Feb 2006

A wide range of techniques have been developed to search for particle dark matter, including direct detection, indirect detection, and collider searches. The prospects for the detection of neutralino dark matter is quite promising for each of these three very different methods. Looking ahead to a time in which these techniques have successfully detected neutralino dark matter, we explore the ability of these observations to determine the parameters of supersymmetry. In particular, we focus on the ability of direct and indirect detection techniques to measure the parameters $\mu$ and $m_A$. We find that $\mu$ can be much more tightly constrained if astrophysical measurements are considered than by LHC data alone. In supersymmetric models within the $A$-funnel region of parameter space, we find that astrophysical measurements can determine $m_A$ to roughly $\pm100$ GeV precision.

Replacements

astro-ph/0412666 [abs, ps, pdf, other] :: Title: Hydrodynamic and hydromagnetic energy spectra from large eddy simulations
Authors: N.E.L. Haugen (NTNU), A. Brandenburg (NORDITA)
Comments: 8 pages, 9 figs, Phys. Fluids (in press)
Note: replaced with revised version Thu, 29 Jun 2006 05:15:55 GMT (67kb)
astro-ph/0507466 [abs, ps, pdf, other] :: Title: An improved formula for the relativistic corrections to the kinematical Sunyaev-Zeldovich effect for clusters of galaxies
Authors: Satoshi Nozawa, Naoki Itoh, Yasuhiko Suda, Yoichi Ohhata
Comments: 14 pages, 4 figures, accepted version, Nuovo Cimento B
Note: replaced with revised version Thu, 29 Jun 2006 07:03:19 GMT (36kb)
astro-ph/0511500 [abs, ps, pdf, other] :: Title: Is cosmology compatible with sterile neutrinos?
Authors: Scott Dodelson, Alessandro Melchiorri, Anze Slosar
Comments: 5 pages, 3 figures; v2: update datasets to WMAP3, new Lyman Alpha, Baryonic oscillations; confidence limits tightened by a factor ~2, results unchanged; v3 minor changes, version accepted by PRL
Note: replaced with revised version Thu, 29 Jun 2006 12:57:24 GMT (36kb)
astro-ph/0601092 [abs, ps, pdf, other] :: Title: Resolving the Surfaces of Extrasolar Planets With Secondary Eclipse Light Curves
Authors: Peter K. G. Williams, David Charbonneau, Curtis S. Cooper, Adam P. Showman, Jonathan J. Fortney
Comments: AASTeX 5.2, 24 pages, 5 figures, accepted for publication in ApJ; v2: clarifications, updated to version accepted by ApJ; v3: try to reduce spacing
Note: replaced with revised version Wed, 28 Jun 2006 20:48:03 GMT (68kb)
astro-ph/0601371 [abs, ps, pdf, other] :: Title: A multifrequency angular power spectrum analysis of the Leiden polarization surveys
Authors: Laura La Porta, Carlo Burigana
Comments: 18 pages, 14 figures. Astronomy and Astrophysics, in press
Note: replaced with revised version Thu, 29 Jun 2006 17:36:12 GMT (1279kb)
astro-ph/0606228 [abs, ps, pdf, other] :: Title: Generating the primordial curvature perturbations in preheating
Authors: Teruaki Suyama, Shuichiro Yokoyama
Comments: 11 pages, 6 figures, Typos corrected, references added
Note: replaced with revised version Thu, 29 Jun 2006 06:34:01 GMT (87kb)
astro-ph/0606426 [abs, ps, pdf, other] :: Title: Long-term Variability in the Length of the Solar Cycle
Authors: Michael L. Rogers, Mercedes T. Richards, Donald St.P. Richards
Comments: 15 pages, 8 figures; bottom panels of Figures 1 and 8 replaced
Note: replaced with revised version Thu, 29 Jun 2006 17:27:30 GMT (237kb)
astro-ph/0606468 [abs, pdf] :: Title: Terrestrial planetary dynamics: a view from U, Th geochemistry
Authors: Xuezhao Bao
Comments: 26 pages, 4 figures, 2 tables
Note: replaced with revised version Thu, 29 Jun 2006 03:52:13 GMT (299kb)
astro-ph/0606614 [abs, pdf] :: Title: Uranium partitioning between liquid iron and silicate melt at high pressures: implications for uranium solubility in planetary cores
Authors: Xuezhao Bao, Richard A. Secco, Joel E. Gagnon, Brian J. Fryer
Comments: 29 pages, 10 figures and 3 tables
Note: replaced with revised version Thu, 29 Jun 2006 03:45:05 GMT (520kb)
astro-ph/0606634 [abs, pdf] :: Title: U solubility in the core of Earth
Authors: Xuezhao Bao, Richard A. Secco
Comments: 27 pages, 12 figures, 3 tables
Note: replaced with revised version Thu, 29 Jun 2006 03:49:11 GMT (529kb)
gr-qc/0601032 [abs, ps, pdf, other] :: Title: Gauge Invariant Treatment of the Energy Carried by a Gravitational Wave
Authors: Philip D. Mannheim (University of Connecticut)
Comments: 13 pages, revtex4. Final version. To appear in Phys. Rev. D
Note: replaced with revised version Thu, 29 Jun 2006 18:57:25 GMT (11kb)
gr-qc/0604067 [abs, ps, pdf, other] :: Title: Probing the non-linear structure of general relativity with black hole binaries
Authors: K.G. Arun, B.R. Iyer, M.S.S. Qusailah, B.S. Sathyaprakash
Comments: 5 pages, 4 figures. Revised version, accepted for publication in Phys. Rev D
Note: replaced with revised version Thu, 29 Jun 2006 09:11:02 GMT (34kb)
hep-th/0606025 [abs, ps, pdf, other] :: Title: The new form of the equation of state for dark energy fluid and accelerating universe
Authors: Shin'ichi Nojiri, Sergei D. Odintsov
Comments: LaTeX file, 9 pages, extended version, to appear in PLB
Note: replaced with revised version Thu, 29 Jun 2006 12:31:43 GMT (12kb)

For subscribe options to combined physics archives,
e-mail To: physics@arXiv.org, Subject: subscribe
-----------------------------------------------------------------------------
For help on viewing and making submissions, see this http URL
For a list of archive mirror sites, see this http URL
-----------------------------------------------------------------------------
Third-party submissions cause excessive problems.
Author self-submissions are exceedingly preferred.
E-mail submissions have been discontinued in favor of better support for
Web submissions. See this http URL