Time Drift of Cosmological Redshifts as a Test of the Copernican Principle
Jean-Philippe Uzan, Chris Clarkson, and George F. R. Ellis
We present the time drift of the cosmological redshift in a general spherically symmetric spacetime. We demonstrate that its observation would allow us to test the Copernican principle and so determine if our Universe is radially inhomogeneous, an important issue in our understanding of dark energy. ... [Phys. Rev. Lett. 100, 191303 (2008)] published Fri May 16, 2008.
A Test of the Copernican Principle
R. R. Caldwell and A. Stebbins
The blackbody nature of the cosmic microwave background (CMB) radiation spectrum is used in a modern test of the Copernican principle. The reionized universe serves as a mirror to reflect CMB photons, thereby permitting a view of ourselves and the local gravitational potential. By comparing with mea ... [Phys. Rev. Lett. 100, 191302 (2008)] published Fri May 16, 2008.
Astrophysical implications of equation of state for hadron-quark mixed phase: Compact stars and stellar collapses
Ken'ichiro Nakazato, Kohsuke Sumiyoshi, and Shoichi Yamada
We construct an equation of state including the hadron-quark phase transition. The mixed phase is obtained by the Gibbs conditions for finite temperature. We adopt the equation of state based on the relativistic mean field theory for the hadronic phase, taking into account pions. As for the quark ph ... [Phys. Rev. D 77, 103006 (2008)] published Fri May 16, 2008.
A periodic table for black hole orbits
Janna Levin and Gabe Perez-Giz
Understanding the dynamics around rotating black holes is imperative to the success of future gravitational wave observatories. Although integrable in principle, test-particle orbits in the Kerr spacetime can also be elaborate, and while they have been studied extensively, classifying their general ... [Phys. Rev. D 77, 103005 (2008)] published Thu May 15, 2008.
Tau energy losses at ultrahigh energy: Continuous versus stochastic treatment
Oscar Blanch Bigas, Olivier Deligny, Kevin Payet, and Veronique Van Elewyck
We study the energy losses of the tau lepton in matter through electromagnetic processes at ultrahigh energy. We use both a stochastic and a continuous framework to treat these interactions and compare the flux of tau leptons propagated after some amount of matter. We discuss the accuracy of the app ... [Phys. Rev. D 77, 103004 (2008)] published Thu May 15, 2008.
Large scale structure as a probe of gravitational slip
Scott F. Daniel, Robert R. Caldwell, Asantha Cooray, and Alessandro Melchiorri
A new time-dependent, scale-independent parameter, pi, is employed in a phenomenological model of the deviation from general relativity in which the Newtonian and longitudinal gravitational potentials slip apart on cosmological scales as dark energy, assumed to be arising from a new theory of gravit ... [Phys. Rev. D 77, 103513 (2008)] published Thu May 15, 2008.
Impact of Massive Neutrinos on the Nonlinear Matter Power Spectrum
Shun Saito, Masahiro Takada, and Atsushi Taruya
We present the first attempt to analytically study the nonlinear matter power spectrum for a mixed dark matter model containing neutrinos of total mass ~0.1 eV, based on cosmological perturbation theory. The suppression in the power spectrum amplitudes due to massive neutrinos is enhanced in the we ... [Phys. Rev. Lett. 100, 191301 (2008)] published Wed May 14, 2008.
Cosmological constraints on invisible decay of dark matter
Yan Gong and Xuelei Chen
Cold dark matter may be in a metastable state and decays to other particles with a very long lifetime. If the decaying products of the dark matter are weakly interacting, e.g., neutrinos, then it would have little impact on astrophysical processes and is therefore difficult to observe. However, such ... [Phys. Rev. D 77, 103511 (2008)] published Wed May 14, 2008.
Nonthermal x rays from the Ophiuchus galaxy cluster and dark matter annihilation
Stefano Profumo
We investigate a scenario where the recently discovered nonthermal hard x-ray emission from the Ophiuchus cluster originates from inverse Compton scattering of energetic electrons and positrons produced in weakly interacting dark matter pair annihilations. We show that this scenario can account for ... [Phys. Rev. D 77, 103510 (2008)] published Wed May 14, 2008.
Slow decay of magnetic fields in open Friedmann universes
John D. Barrow and Christos G. Tsagas
Magnetic fields in Friedmann universes can experience superadiabatic growth without departing from conventional electromagnetism. The reason is the relativistic coupling between vector fields and spacetime geometry, which slows down the decay of large-scale magnetic fields in open universes, compare ... [Phys. Rev. D 77, 107302 (2008)] published Wed May 14, 2008.
Do Newton's G and Milgrom's a[sub 0] vary with cosmological epoch?
Jacob D. Bekenstein and Eva Sagi
In the scalar-tensor gravitational theories Newton's constant G evolves in the expanding universe. Likewise, it has been speculated that the acceleration scale [fraktur a] in Milgrom's modified Newtonian dynamics is tied to the scale of the cosmos, and must thus evolve. With the advent of relativist ... [Phys. Rev. D 77, 103512 (2008)] published Wed May 14, 2008.
Coupled and extended quintessence: Theoretical differences and structure formation
Valeria Pettorino and Carlo Baccigalupi
The case of a coupling between dark energy and matter [coupled quintessence (CQ)] or gravity [extended quintessence (EQ)] has recently attracted a deep interest and has been widely investigated both in the Einstein and in the Jordan frames (EF, JF), within scalar-tensor theories. Focusing on the sim ... [Phys. Rev. D 77, 103003 (2008)] published Wed May 14, 2008.
Galactic substructure and direct detection of dark matter
Marc Kamionkowski and Savvas M. Koushiappas
We study the effects of substructure in the Galactic halo on direct detection of dark matter, on searches for energetic neutrinos from weakly interacting massive particles (WIMP) annihilation in the Sun and Earth, and on the enhancement in the WIMP annihilation rate in the halo. Our central result i ... [Phys. Rev. D 77, 103509 (2008)] published Tue May 13, 2008.
Spectra of primordial fluctuations in two-perfect-fluid regular bounces
Fabio Finelli, Patrick Peter, and Nelson Pinto-Neto
We introduce analytic solutions for a class of two components bouncing models, where the bounce is triggered by a negative energy density perfect fluid. The equation of state of the two components are constant in time, but otherwise unrelated. By numerically integrating regular equations for scalar ... [Phys. Rev. D 77, 103508 (2008)] published Mon May 12, 2008.
CMB map derived from the WMAP data through harmonic internal linear combination
Jaiseung Kim, Pavel Naselsky, and Per Rex Christensen
We are presenting an internal linear combination CMB map, in which the foreground is reduced through harmonic variance minimization. We have derived our method by converting a general form of pixel-space approach into spherical harmonic space, maintaining full correspondence. By working in spherical ... [Phys. Rev. D 77, 103002 (2008)] published Mon May 12, 2008.
Clustering properties of dynamical dark energy models
P. P. Avelino, L. M. G. Beca, and C. J. A. P. Martins
We provide a generic but physically clear discussion of the clustering properties of dark energy models. We explicitly show that in quintessence-type models the dark energy fluctuations, on scales smaller than the Hubble radius, are of the order of the perturbations to the Newtonian gravitational po ... [Phys. Rev. D 77, 101302 (2008)] published Mon May 12, 2008.
A twelve-image gravitational lens system in the z ~ 0.84 cluster Cl J0152.7-1357. (arXiv:0805.2381v1 [astro-ph])
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Cosmological evolution of interacting phantom (quintessence) model in Loop Quantum Gravity. (arXiv:0805.2255v1 [astro-ph])
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Multi-dimensional modelling of X-ray spectra for AGN accretion-disk outflows. (arXiv:0805.2251v1 [astro-ph])
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The spatial distribution of galaxies of different spectral types in the massive intermediate-redshift cluster MACSJ0717.5+3745. (arXiv:0805.2238v1 [astro-ph])
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X-Ray Emission from Supernova Remnants Observed in the ASCA Galactic Plane Survey. (arXiv:0805.2232v1 [astro-ph])
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High energy gamma-ray emission from Gamma-Ray Bursts -- before GLAST. (arXiv:0805.2221v2 [astro-ph])
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Origin of dwarf irregular galaxies with outer early-type structures. (arXiv:0805.2208v1 [astro-ph])
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Chandra Cluster Cosmology Project II: Samples and X-ray Data Reduction. (arXiv:0805.2207v2 [astro-ph])
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From Shock Breakout to Peak and Beyond: Extensive Panchromatic Observations of the Aspherical Type Ib Supernova 2008D associated with Swift X-ray Transient 080109. (arXiv:0805.2201v1 [astro-ph])
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Infall of planetesimals onto growing giant planets: onset of runaway gas accretion and metallicity of their gas envelopes. (arXiv:0805.2200v1 [astro-ph])
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Emission line profiles as a probe of physical conditions in planetary nebulae. (arXiv:0805.2198v1 [astro-ph])
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Cosmological Radar Ranging in an Expanding Universe. (arXiv:0805.2197v1 [astro-ph])
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Intergalactic baryon-rich regions at high redshift. (arXiv:0805.2191v1 [astro-ph])
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A new outburst in LMC-N66. (arXiv:0805.2184v1 [astro-ph])
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Fundamentals of Non-relativistic Collisionless Shock Physics: III. Quasi-Perpendicular Supercritical Shocks. (arXiv:0805.2181v1 [astro-ph])
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Carbon monoxide line emission as a CMB foreground: tomography of the star-forming universe with different spectral resolutions. (arXiv:0805.2174v1 [astro-ph])
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Multiwavelength study of Cygnus A II. X-ray inverse-Compton emission from a relic counterjet and implications for jet duty-cycles. (arXiv:0805.2172v2 [astro-ph])
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Multiwavelength study of Cygnus A I. Precession and slow jet speeds from radio observations. (arXiv:0805.2169v1 [astro-ph])
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Cosmic Evolution of Stellar Disk Truncations: From z~1 to the Local Universe. (arXiv:0805.2259v1 [astro-ph])
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Nuclear Black Hole Formation in Clumpy Galaxies at High Redshift. (arXiv:0805.2266v1 [astro-ph])
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Microquasars: summary and outlook. (arXiv:0805.2378v1 [astro-ph])
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X-ray photons from late-decaying majoron dark matter. (arXiv:0805.2372v1 [astro-ph])
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Reduction of CCD observations obtained with the Fabry-Perot scanning interferometer. II. Additional Procedures. (arXiv:0805.2367v1 [astro-ph])
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LSST: from Science Drivers to Reference Design and Anticipated Data Products. (arXiv:0805.2366v1 [astro-ph])
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Clearing the Dust from Globular Clusters. (arXiv:0805.2358v1 [astro-ph])
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The birth and death of organic molecules in protoplanetary disks. (arXiv:0805.2341v1 [astro-ph])
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Spitzer Mid-infrared Study of Compact HII Regions in the Magellanic Clouds. (arXiv:0805.2337v1 [astro-ph])
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Shaping Planetary Nebulae by Light Jets. (arXiv:0805.2332v1 [astro-ph])
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Observed Bimodality of the Einstein Crossing Times of Galactic Microlensing Events. (arXiv:0805.2326v1 [astro-ph])
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A valid and fast spatial bootstrap for correlation functions. (arXiv:0805.2325v1 [astro-ph])
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Rotation profiles of solar-like stars with magnetic fields. (arXiv:0805.2323v1 [astro-ph])
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Chandra studies of the X-ray gas properties of galaxy groups. (arXiv:0805.2320v1 [astro-ph])
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The VIMOS-VLT Deep Survey: Dependence of galaxy clustering on stellar mass. (arXiv:0805.2319v1 [astro-ph])
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XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar. (arXiv:0805.2294v1 [astro-ph])
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Molecules in the Circumstellar Disk Orbiting BP Piscium. (arXiv:0805.2293v1 [astro-ph])
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Rising Jet-Inflated Bubbles in Clusters of Galaxies. (arXiv:0805.2275v1 [astro-ph])
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Comparison of clustering properties of observed objects and dark matter halos on different mass and spatial scales. (arXiv:0805.2270v1 [astro-ph])
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Effect of Density Inhomogeneity on YORP: The case of Itokawa. (arXiv:0805.2168v1 [astro-ph])
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Fundamentals of Non-relativistic Collisionless Shock Physics: II. Basic Equations and Models. (arXiv:0805.2162v1 [astro-ph])
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The Effect of Composition on Nova Ignitions. (arXiv:0805.2160v1 [astro-ph])
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The web-PLOP observation prioritisation system. (arXiv:0805.2159v1 [astro-ph])
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Properties of analytic transit light curve models. (arXiv:0805.2157v1 [astro-ph])
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Improved estimation of cluster mass profiles from the cosmic microwave background. (arXiv:0805.2155v1 [astro-ph])
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Primordial Black Holes, Eternal Inflation, and the Inflationary Parameter Space after WMAP5. (arXiv:0805.2154v1 [astro-ph])
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Precision Astrometry with Adaptive Optics. (arXiv:0805.2153v1 [astro-ph])
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Discovery of a strong Baldwin effect in mid-infrared AGN lines. (arXiv:0805.2151v1 [astro-ph])
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Second and third season QUaD CMB temperature and polarization power spectra. (arXiv:0805.1944v2 [astro-ph] UPDATED)
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Reference-less detection, astrometry, and photometry of faint companions with adaptive optics. (arXiv:0805.1870v2 [astro-ph] UPDATED)
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Entanglement of Quantum Fluctuations in the Inflationary Universe. (arXiv:0805.1471v2 [gr-qc] UPDATED)
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VSOP and stellar sources - the case of LS I +61 303. (arXiv:0805.1429v2 [astro-ph] UPDATED)
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Tachyon Mediated Non-Gaussianity. (arXiv:0805.1229v2 [hep-th] UPDATED)
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Effective Field Theory for Inflation. (arXiv:0804.4291v2 [hep-th] UPDATED)
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Stochastically Induced Gamma-Ray Burst Wakefield Processes. (arXiv:0803.3618v2 [astro-ph] UPDATED)
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How to Distinguish Dark Energy and Modified Gravity?. (arXiv:0803.3292v3 [astro-ph] UPDATED)
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Quark-hadron phase transition in a magnetic field. (arXiv:0803.3156v3 [hep-ph] UPDATED)
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The Seyfert 1 Galaxy Mrk 335 at a very low flux state: mapping the soft X-ray photoionised gas. (arXiv:0803.2520v2 [astro-ph] UPDATED)
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Gravitational Radiation from Primordial Helical MHD Turbulence. (arXiv:0802.3524v2 [astro-ph] UPDATED)
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LARES approved: towards a 1% measurement of frame dragging?. (arXiv:0802.2031v6 [gr-qc] UPDATED)
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Locality inside black holes violates the second law of thermodynamics. (arXiv:0801.4415v2 [gr-qc] UPDATED)
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Sequestered Dark Matter. (arXiv:0801.4015v3 [hep-ph] UPDATED)
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Second Order Gravitational Effects on CMB Temperature Anisotropy in Lambda dominated flat universes. (arXiv:0712.1291v2 [astro-ph] UPDATED)
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Polar-cap accelerator and radio emission from pulsars. (arXiv:0710.0920v2 [astro-ph] UPDATED)
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3He-Driven Mixing in Low-Mass Red Giants: Convective Instability in Radiative and Adiabatic Limits. (arXiv:0708.3864v2 [astro-ph] UPDATED)
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Dynamical Outcomes of Planet-Planet Scattering. (arXiv:astro-ph/0703166v2 UPDATED)
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Environmental dependence in the ellipsoidal collapse model. (arXiv:0707.4670v2 [astro-ph] UPDATED)
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SUSY Predictions and SUSY Tools at the LHC. (arXiv:0805.2088v1 [hep-ph] CROSS LISTED)
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Superfluid spherical Couette flow. (arXiv:0805.2061v1 [cond-mat.other] CROSS LISTED)
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Stochastic Inflation and Dimensional Reduction. (arXiv:0805.1998v2 [gr-qc] CROSS LISTED)
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