Astrophysics

Authors and titles for June 2007

[801] arXiv:0706.4388 [pdf, other]

Title: A precessing accretion disc in the intermediate polar XY Ari?

A.J.Norton (1), K.Mukai (2) ((1) The Open University (2) NASA/GSFC and University of Maryland)

Comments: Accepted for publication in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[802] arXiv:0706.4389 [pdf, other]

Title: Calculation of the atmospheric muon flux motivated by the ATIC-2 experiment

A.A.Kochanov, A.D.Panov, T.S.Sinegovskaya, S.I.Sinegovsky

Comments: Submitted to 30th ICRC, 3-11 July 2007, Merida, Mexico

Subjects: Astrophysics (astro-ph); High Energy Physics - Experiment (hep-ex)

[803] arXiv:0706.4416 [pdf, other]

Title: Population III star formation in a Lambda CDM universe, II: Effects of a photodissociating background

Brian W. O'Shea, Michael L. Norman

Comments: 46 pages, 14 figures (9 color). Accepted by the Astrophysical Journal, some minor revisions

Subjects: Astrophysics (astro-ph)

[804] arXiv:0706.4419 [pdf, other]

Title: Fossil AGN jets as ultra high energy particle accelerators

Gregory Benford, R.J. Protheroe

Comments: 11 pages, 6 figures, additional references and explanations. Accepted for publication in MNRAS

Subjects: Astrophysics (astro-ph)

[805] arXiv:0706.4424 [pdf, other]

Title: Steps toward a classifier for the Virtual Observatory. I. Classifying the SDSS photometric archive

R. D'Abrusco, A. Staiano, G. Longo, M. Paolillo, E. De Filippis

Comments: To appear in the Proceedings of the "1st Workshop of Astronomy and Astrophysics for Students" - Naples, 19-20 April 2006

Subjects: Astrophysics (astro-ph)

[806] arXiv:0706.4426 [pdf, other]

Title: Be stars and binaries in the field of the SMC open cluster NGC330 with VLT-FLAMES

Christophe Martayan (GEPI), Michele Floquet (GEPI), Anne-Marie Hubert (GEPI), Juan Gutiérrez-Soto (GEPI), Juan Fabregat, Coralie Neiner (GEPI), Malek Mekkas (GEPI)

Comments: english not yet corrected, 23 pages, 4th article about the study in the LMC NGC2004 and SMC NGC330

Journal-ref: Astron.Astrophys.472:577-586,2007

Subjects: Astrophysics (astro-ph)

[807] arXiv:0706.4428 [pdf, other]

Title: Semi-analytical approach to magnetized temperature autocorrelations

Massimo Giovannini

Comments: 40 pages, 13 figures

Journal-ref: PMCPhys.A1:5,2007

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

[808] arXiv:0706.4435 [pdf, other]

Title: Discovery of Very High Energy gamma-rays from 1ES 1011+496 at z=0.212

MAGIC Collaboration: J. Albert, et al

Comments: 4 pages, 6 figures, minor changes to fit the ApJ version

Journal-ref: Astrophys.J.667:L21-L23,2007

Subjects: Astrophysics (astro-ph)

[809] arXiv:0706.4439 [pdf, other]

Title: AGN Observations in the GeV/TeV Energy Range with the MAGIC Telescope

Robert Wagner (for the MAGIC Collaboration)

Comments: 7 pages, 8 figures, to appear in the proceedings of Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, Girdwood (AK), May 2007

Journal-ref: ASP Conf. Ser. 386 (2008) 295

Subjects: Astrophysics (astro-ph)

[810] arXiv:0706.4442 [pdf, other]

Title: A First Synoptic Blazar Study Comprising Thirteen Blazars Visible in E>100 GeV Gamma-Rays

Robert Wagner

Comments: 4 pages, 4 figures, to appear in the proceedings of the 30th International Cosmic Ray Conference, Merida, July 2007

Journal-ref: Proc. 30th Int. Cosm. Ray Conf., R. Caballero et al. (eds.), UNAM, Mexico City, 2008, Vol. 3, pg. 881-884

Subjects: Astrophysics (astro-ph)

[811] arXiv:0706.4444 [pdf, other]

Title: Automatic Active-Region Identification and Azimuth Disambiguation of the SOLIS/VSM Full-Disk Vector Magnetograms

M. K. Georgoulis, N.-E. Raouafi, C. J Henney

Comments: 8 pages, 4 Figures, Proceedings of the NSO Workshop 24, ASP Conf. Series, submitted

Subjects: Astrophysics (astro-ph)

[812] arXiv:0706.4453 [pdf, other]

Title: Systematic search for VHE gamma-ray emission from X-ray bright high-frequency BL Lac objects

M. Meyer (for the MAGIC Collaboration: J. Albert, et al.)

Comments: 15 pages, 7 figures, 5 tables, submitted to ApJ (revised version)

Journal-ref: Astrophys.J.681:944-953,2008

Subjects: Astrophysics (astro-ph)

[813] arXiv:0706.4461 [pdf, other]

Title: The Infrared Properties of Hickson Compact Groups

K.E. Johnson, J.E. Hibbard, S.C. Gallagher, J.C. Charlton, A.E. Hornschemeier, T.H. Jarrett, A.E. Reines

Comments: 34 pages, 26 figures, accepted for publication in AJ, higher quality images available in publication

Journal-ref: Astron.J.134:1522-1543,2007

Subjects: Astrophysics (astro-ph)

[814] arXiv:0706.4463 [pdf, other]

Title: The Nonlinear Evolution of Instabilities Driven by Magnetic Buoyancy: A New Mechanism for the Formation of Coherent Magnetic Structures

Evy Kersale, David W. Hughes, Steven M. Tobias

Comments: Published in ApJL. Version with colour figures

Journal-ref: Astrophys.J.663:L113-L116,2007

Subjects: Astrophysics (astro-ph)

[815] arXiv:0706.4467 [pdf, other]

Title: Surface Brightness Fluctuations from archival ACS images: a stellar population and distance study

Michele Cantiello (1,2), John P. Blakeslee (1), Gabriella Raimondo (2), Enzo Brocato (1), Massimo Capaccioli (3) ((1) Department of Physics, Astronomy, Washington State University, Pullman, (2) INAF--Osservatorio Astronomico di Teramo, (3) Dipartimento di Scienze Fisiche, Universita' Federico I. I. di Napoli)

Comments: ApJ Accepted

Subjects: Astrophysics (astro-ph)

[816] arXiv:0706.4482 [pdf, other]

Title: The Evolution of the Cosmic Microwave Background

J. P. Zibin, A. Moss, D. Scott

Comments: 23 pages, 11 figures; references added; one figure dropped and minor changes to match published version. For high-resolution versions of figures and animations, see this http URL

Journal-ref: Phys.Rev.D76:123010,2007

Subjects: Astrophysics (astro-ph)

[817] arXiv:0706.4483 [pdf, other]

Title: Epicyclic Oscillations of Fluid Bodies: Newtonian Nonslender Torus

Omer M. Blaes, Eva Sramkova, Marek A. Abramowicz, Wlodek Kluzniak, Ulf Torkelsson

Comments: ApJ, in press

Journal-ref: Astrophys.J.665:642-653,2007

Subjects: Astrophysics (astro-ph)

[818] arXiv:0706.4484 [pdf, other]

Title: Spectroscopic Surveys: Present

Ching-Wa Yip (JHU)

Comments: 9 pages, 1 figure, 2 tables. Invited talk given at the Astronomical Spectroscopy and The Virtual Observatory WorkShop 2007

Subjects: Astrophysics (astro-ph)

[819] arXiv:0706.0021 (cross-list from hep-th) [pdf, other]

Title: Quantum Fields with Noncommutative Target Spaces

A. P. Balachandran, A. R. Queiroz, A. M. Marques, P. Teotonio-Sobrinho

Comments: 20 pages, 5 figures; Abstract changed. Changes and corrections in the text. References added

Journal-ref: Phys.Rev.D77:105032,2008

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph); Quantum Algebra (math.QA)

[820] arXiv:0706.0023 (cross-list from hep-th) [pdf, other]

Title: The Cosmological Slingshot Scenario: Myths and Facts

Cristiano Germani (SISSA and INFN), Nicolas Grandi (La Plata, Inst. Natl. Phys.), Alex Kehagias (Natl. Tech. U., Athens)

Comments: 16 pages, 2 figs. Major clarifications and references added, version accepted in Gen. Rel. Grav. (2009)

Journal-ref: Gen.Rel.Grav.42:77-101,2010

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[821] arXiv:0706.0132 (cross-list from gr-qc) [pdf, other]

Title: Magnification relations for Kerr lensing and testing Cosmic Censorship

M. C. Werner, A. O. Petters

Comments: 13 pages, version 2: references added, minor changes. To appear in Phys. Rev. D

Journal-ref: Phys.Rev.D76:064024,2007

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph)

[822] arXiv:0706.0174 (cross-list from hep-th) [pdf, other]

Title: Entropy signature of the running cosmological constant

Alfio Bonanno, Martin Reuter

Comments: 57 pages, 7 figures

Journal-ref: JCAP 0708:024,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[823] arXiv:0706.0179 (cross-list from gr-qc) [pdf, other]

Title: Lattice Refining Loop Quantum Cosmology and Inflation

William Nelson, Mairi Sakellariadou (King's College, London)

Comments: 12 pages, RevTex Two minor changes to match version to appear in Physical Review D

Journal-ref: Phys.Rev.D76:044015,2007

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

[824] arXiv:0706.0288 (cross-list from hep-th) [pdf, other]

Title: Bumpy black holes from spontaneous Lorentz violation

Sergei Dubovsky, Peter Tinyakov, Matias Zaldarriaga

Comments: 40 pages, 4 figures

Journal-ref: JHEP0711:083,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)

[825] arXiv:0706.0302 (cross-list from hep-ph) [pdf, other]

Title: Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics

Shun Zhou

Comments: 10 pages including 2 PS figures; v2: an error removed and the text rewritten; v3: minor changes, accepted for publication in Phys. Lett. B

Journal-ref: Phys.Lett.B659:336-340,2008

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[826] arXiv:0706.0316 (cross-list from hep-ph) [pdf, other]

Title: Skyrme Strings

Muneto Nitta, Noriko Shiiki

Comments: 7 pages, 3 figures, references added

Journal-ref: Prog.Theor.Phys.119:829-838,2008

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th)

[827] arXiv:0706.0360 (cross-list from hep-th) [pdf, other]

Title: Towards an Explicit Model of D-brane Inflation

Daniel Baumann, Anatoly Dymarsky, Igor R. Klebanov, Liam McAllister

Comments: 68 pages, 6 figures; v2: fixed typos, added refs and clarifications; v3: expanded discussion of inflection point inflation

Journal-ref: JCAP 0801:024,2008

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph)

[828] arXiv:0706.0399 (cross-list from hep-ph) [pdf, other]

Title: Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes

Ram Lal Awasthi, Sandhya Choubey

Comments: 22 pages, version to appear in Phys. Rev. D

Journal-ref: Phys.Rev.D76:113002,2007

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Experiment (hep-ex)

[829] arXiv:0706.0410 (cross-list from hep-th) [pdf, other]

Title: Curvature Inspired Cosmological Scenario

S. K. Srivastava

Comments: 19 Pages. To appear in Int. J. Thro. Phys

Journal-ref: Int.J.Theor.Phys.47:1966-1978,2008

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[830] arXiv:0706.0452 (cross-list from gr-qc) [pdf, other]

Title: Some remarks on the dynamical systems approach to fourth order gravity

S. Carloni, A. Troisi, P. K. S. Dunsby

Comments: 19 pages, LaTeX

Journal-ref: Gen.Rel.Grav.41:1757-1776,2009

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[831] arXiv:0706.0485 (cross-list from hep-th) [pdf, other]

Title: A Wrinkle in Coleman - De Luccia

Adam R. Brown, Saswat Sarangi, Benjamin Shlaer, Amanda Weltman

Comments: 4 pages, 2 figures, changes made to 'including gravity' section

Journal-ref: Phys.Rev.Lett.99:161601,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[832] arXiv:0706.0526 (cross-list from hep-ph) [pdf, other]

Title: Dirac Neutrino Dark Matter

Genevieve Belanger, Alexander Pukhov, Geraldine Servant

Comments: 35 pages, 25 figures; v2: JCAP version; presentation and plots improved, results unchanged

Journal-ref: JCAP 0801:009,2008

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph)

[833] arXiv:0706.0538 (cross-list from hep-ex) [pdf, other]

Title: Interpretation of the atmospheric muon charge ratio in MINOS

Philip Schreiner, Maury Goodman (for the MINOS collaboration)

Comments: Contribution to the 30th International Cosmic Ray Conference, Merida Mexico 2007

Subjects: High Energy Physics - Experiment (hep-ex); Astrophysics (astro-ph)

[834] arXiv:0706.0572 (cross-list from hep-th) [pdf, other]

Title: Is Noncommutative Eternal Inflation Possible?

Yi-Fu Cai, Yi Wang

Comments: 14 pages, 2 figures, accepted by JCAP

Journal-ref: JCAP 0706:022,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[835] arXiv:0706.0603 (cross-list from hep-th) [pdf, other]

Title: The Geometry of Large Causal Diamonds and the No Hair Property of Asymptotically de-Sitter Spacetimes

G. W. Gibbons, S. N. Solodukhin

Comments: 13 pages, 2 figures, Latex; references added

Journal-ref: Phys.Lett.B652:103-110,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); Differential Geometry (math.DG)

[836] arXiv:0706.0622 (cross-list from gr-qc) [pdf, other]

Title: The Kerr spacetime: A brief introduction

Matt Visser (Victoria University of Wellington)

Comments: V2: 41 pages, 3 figures: Introductory chapter on the Kerr spacetime that is intended for use in the book "The Kerr spacetime", currently being edited by Susan Scott, Matt Visser, and David Wiltshire. It is not, nor is it intended to be, complete and exhaustive. 3 references added. 2 figures added. some typos fixed. minor rearrangements; V3: 3 added references, minor edits

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[837] arXiv:0706.0678 (cross-list from gr-qc) [pdf, other]

Title: Gradient expansion approach to nonlinear superhorizon perturbations II -- a single scalar field --

Yoshiharu Tanaka, Misao Sasaki

Comments: 13 pages, no figures, typos corrected

Journal-ref: Prog.Theor.Phys.118:455-473,2007

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[838] arXiv:0706.0857 (cross-list from hep-th) [pdf, other]

Title: Stealth Acceleration and Modified Gravity

Christos Charmousis, Ruth Gregory, Antonio Padilla

Comments: 32 pages, 5 figures

Journal-ref: JCAP 0710:006,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph)

[839] arXiv:0706.0928 (cross-list from gr-qc) [pdf, other]

Title: An Analytic Perturbation Approach for Classical Spinning Particle Dynamics

Dinesh Singh

Comments: 14 pages, no figures; typo corrected in v3; accepted for publication in General Relativity and Gravitation as part of Bahram Mashhoon's 60th birthday festschrift

Journal-ref: Gen.Rel.Grav.40:1179-1192,2008

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph)

[840] arXiv:0706.0980 (cross-list from hep-th) [pdf, other]

Title: Trans-Planckian Issue in the Milne Universe

Pascal M. Vaudrevange, Lev Kofman

Comments: 8 pages, 2 figures

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)

[841] arXiv:0706.0986 (cross-list from hep-ph) [pdf, other]

Title: Inflaton Decay in Supergravity

Motoi Endo, Fuminobu Takahashi, T. T. Yanagida

Comments: 41 pages, 5 figures. v2: references and supplementary sections added, a version to appear in Phys. Rev. D

Journal-ref: Phys.Rev.D76:083509,2007

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[842] arXiv:0706.0991 (cross-list from gr-qc) [pdf, other]

Title: Non-axisymmetric oscillations of differentially rotating relativistic stars

Andrea Passamonti, Adamantios Stavridis, Kostas Kokkotas

Comments: 17 pages, 7 figures, 8 tables, version accepted for publication to Phys. Rev. D

Journal-ref: Phys.Rev.D77:024029,2008

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph)

[843] arXiv:0706.1026 (cross-list from hep-ph) [pdf, other]

Title: Charge separation induced by P-odd bubbles in QCD matter

D. Kharzeev, A. Zhitnitsky

Comments: 9 pages, 1 figure; extended discussion of cosmological and astrophysical implications; final version to appear in Nuclear Physics A

Journal-ref: Nucl.Phys.A797:67-79,2007

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)

[844] arXiv:0706.1057 (cross-list from gr-qc) [pdf, other]

Title: Effective equations for isotropic quantum cosmology including matter

Martin Bojowald, Hector Hernandez, Aureliano Skirzewski

Comments: 42 pages

Journal-ref: Phys.Rev.D76:063511,2007

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

[845] arXiv:0706.1089 (cross-list from physics.geo-ph) [pdf, other]

Title: Geochemistry of U and Th and its Influence on the Origin and Evolution of the Crust of Earth and the Biological Evolution

Xuezhao Bao, Ali Zhang

Comments: 18 pages, 3 figures, 2 tables. Language correction

Journal-ref: ActaPetrolog.Mineral.17:160-172,1998

Subjects: Geophysics (physics.geo-ph); Astrophysics (astro-ph); Populations and Evolution (q-bio.PE)

[846] arXiv:0706.1104 (cross-list from hep-th) [pdf, other]

Title: Emergence of Fluctuations from a Tachyonic Big Bang

Robert H. Brandenberger, Andrew R. Frey, Sugumi Kanno

Comments: 8pg, RevTeX4, 1 fig, v2. added refs, v3. added small clarification, 1 ref

Journal-ref: Phys.Rev.D76:083524,2007

Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)

[847] arXiv:0706.1106 (cross-list from physics.ins-det) [pdf, other]

Title: Toward Application of a Thick Gas Electron Multiplier (THGEM) Readout for a Dark Matter Detector

M. Gai, D.N. McKinsey, K. Ni, D.A.R. Rubin, T. Wongjirad (Yale), R. Alon, A. Breskin, M. Cortesi, J. Miyamoto, (Weizmann)

Comments: To be published in the Proceedings of the 23rd Winter Workshop on Nuclear Dynamics, Big Sky, Montana, February 11-18, 2007. This work is supported by the Yale-Weizmann Collaboration Program of the American Committee on Weizmann Institute of Science (ACWIS), New York

Subjects: Instrumentation and Detectors (physics.ins-det); Astrophysics (astro-ph); Nuclear Experiment (nucl-ex)

[848] arXiv:0706.1128 (cross-list from cond-mat.other) [pdf, other]

Title: Dipole Oscillations in Bose - Fermi Mixture in the Time-Dependent Grosspitaevskii and Vlasov equations

Tomoyuki Maruyama, George F. Bertsch

Comments: 17 pages text, and 15 figures

Subjects: Other Condensed Matter (cond-mat.other); Astrophysics (astro-ph); Nuclear Theory (nucl-th)

[849] arXiv:0706.1165 (cross-list from physics.flu-dyn) [pdf, other]

Title: On the existence of two-dimensional nonlinear steady states in plane Couette flow

Francois Rincon (DAMTP, University of Cambridge)

Comments: 7 pages, 7 figures, accepted for publication in Physics of Fluids

Subjects: Fluid Dynamics (physics.flu-dyn); Astrophysics (astro-ph)

[850] arXiv:0706.1216 (cross-list from hep-ph) [pdf, other]

Title: Do charged leptons oscillate?

Evgeny Akhmedov

Comments: LaTeX, 15 pages, no figures. V3: discussion in secs. 4 and 7 expanded, references added. Results and conclusions unchanged

Journal-ref: JHEP0709:116,2007

Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Experiment (hep-ex)