The Mass Function of Void Groups as a Probe of the Primordial non-GaussianityThe primordial non-Gaussianity signal, if measured accurately, will allow us to distinguish between different candidate models for the cosmic inflation. Since the galaxy groups located in void…Hyunmi Song, Jounghun Lee·Nov 9, 2008SaveLearn
Galaxy star formation in different environmentsWe use a semi-analytic model of galaxy formation to study signatures of large-scale modulations in the star formation (SF) activity in galaxies. In order to do this we carefully define local and…R. E. Gonzalez, N. D. Padilla·Nov 9, 2008SaveLearn
Mid- to Far-IR Emission and Star Formation in Early-Type GalaxiesMany early-type galaxies have been detected at wavelengths of 24 to 160 micron, but the emission is usually dominated by heating from an AGN or from the evolved stellar population. Here we present…L M Young, G J Bendo, Danielle Lucero·Nov 9, 2008SaveLearn
Young Cool Stars Divided on the Issue of RotationWe present the results of a combination of new stellar rotation periods and extensive information about membership in the young open clusters M35 and M34. The observations show that late-type members…Søren Meibom·Nov 9, 2008SaveLearn
Wavelet domain Bayesian denoising of string signal in the cosmic microwave backgroundAn algorithm is proposed for denoising the signal induced by cosmic strings in the cosmic microwave background (CMB). A Bayesian approach is taken, based on modeling the string signal in the wavelet…D. K. Hammond, Y. Wiaux, P. Vandergheynst·Nov 8, 2008SaveLearn
Eddington-Born-Infeld gravity and the large scale structure of the UniverseIt has been argued that a Universe governed by Eddington-Born-Infeld gravity can be compatible with current cosmological constraints. The extra fields introduced in this theory can behave both as…Máximo Bañados, Pedro G. Ferreira, Constantinos Skordis·Nov 8, 2008SaveLearn
Gas accretion onto planetary cores: three-dimensional self-gravitating radiation hydrodynamical calculationsWe present results from three-dimensional, self-gravitating radiation hydrodynamical models of gas accretion by planetary cores. In some cases, the accretion flow is resolved down to the surface of…Ben A. Ayliffe, Matthew R. Bate·Nov 8, 2008SaveLearn
The Chirality Of Life: From Phase Transitions To AstrobiologyThe search for life elsewhere in the universe is a pivotal question in modern science. However, to address whether life is common in the universe we must first understand the likelihood of…Marcelo Gleiser, Sara Imari Walker·Nov 8, 2008SaveLearn
Cosmic StringsCosmic strings are linear concentrations of energy that form whenever phase transitions in the early universe break axial symmetries as originally shown by Kibble. They are the result of frustrated…A. Achucarro, C. J. A. P. Martins·Nov 8, 2008SaveLearn
A Spitzer Spectroscopic Survey of Low Ionization Nuclear Emission-line Regions: Characterization of the Central SourceWe have conducted a comprehensive mid-IR spectroscopic investigation of 67 Low Ionization Nuclear Emission Line Regions (LINERs) using archival observations from the high resolution modules of the…R. P. Dudik, S. Satyapal, D. Marcu·Nov 8, 2008SaveLearn
Effects of partitioning and extrapolation on the connectivity of potential magnetic fieldsCoronal magnetic field may be characterized by how its field lines interconnect regions of opposing photospheric flux -- its connectivity. Connectivity can be quantified as the net flux connecting…D. W. Longcope, G. Barnes, C. Beveridge·Nov 8, 2008SaveLearn
The growth of supermassive black holes in pseudo-bulges, classical bulges and elliptical galaxiesUsing results from structural analysis of a sample of nearly 1000 local galaxies from the Sloan Digital Sky Survey, we estimate how the mass in central black holes is distributed amongst elliptical…Dimitri A. Gadotti, Guinevere Kauffmann·Nov 7, 2008SaveLearn
Merging Cold Fronts in the Galaxy Pair NGC 7619 and NGC 7626We present results from Chandra observations of the galaxy pair NGC 7619 and NGC 7626, the two dominant members of the Pegasus group. The X-ray images show a brightness edge associated with…S. W. Randall, C. Jones, R. Kraft et al.·Nov 7, 2008SaveLearn
A Golden Standard Type Ia Supernova SN 2005cf: Observations from the Ultraviolet to the Near-Infrared WavebandsWe present extensive photometry at ultraviolet (UV), optical, and near-infrared (NIR) wavelengths, as well as dense sampling of optical spectra, for the normal type Ia supernova (SN Ia) 2005cf. From…Xiaofeng Wang, Weidong Li, Alexei V. Filippenko et al.·Nov 7, 2008SaveLearn
Hanle effect in the solar Ba II D2 line: a diagnostic tool for chromospheric weak magnetic fieldsThe physics of the solar chromosphere depends in a crucial way on its magnetic structure. However there are presently very few direct magnetic field diagnostics available for this region. Here we…M. Faurobert, M. Derouich, V. Bommier et al.·Nov 7, 2008SaveLearn
Orion's Bar: Physical Conditions across the Definitive H+ / H0 / H2 InterfacePrevious work has shown the Orion Bar to be an interface between ionized and molecular gas, viewed roughly edge on, which is excited by the light from the Trapezium cluster. Much of the emission from…E. W. Pellegrini, J. A. Baldwin, G. J. Ferland et al.·Nov 7, 2008SaveLearn
Ultra High Energy Cosmic Rays from Black Hole Jets of Radio GalaxiesThe Auger Collaboration reports that the arrival directions of >60 EeV ultra-high energy cosmic rays (UHECRs) cluster along the supergalactic plane and correlate with active galactic nuclei (AGN)…C. D. Dermer, S. Razzaque, J. D. Finke et al.·Nov 7, 2008SaveLearn
The Chinese-French SVOM mission for Gamma-Ray Burst studiesWe present the Space-based multi-band astronomical Variable Objects Monitor mission (SVOM) decided by the Chinese National Space Agency (CNSA) and the French Space Agency (CNES). The mission which is…S. Basa, J. Wei, J. Paul et al.·Nov 7, 2008SaveLearn
Spectral evolution of superluminal components in parsec-scale jets(Abridged) We present numerical simulations of the spectral evolution and emission of radio components in relativistic jets. We have developed an algorithm (SPEV) for the transport of a population of…P. Mimica, M. A. Aloy, I. Agudo et al.·Nov 7, 2008SaveLearn
Future science issues for Galactic very-high-energy gamma-ray astronomyThis work intends to provide a brief summary of some of the Galactic science issues for the next generation of very high energy (VHE) instruments. The latter is here generically understood, as an…Diego F. Torres·Nov 7, 2008SaveLearn
HADES - Hydrophone for Acoustic Detection at South PoleThe South Pole Acoustic Test Setup (SPATS) is located in the upper part of the optical neutrino observatory IceCube, currently under construction. SPATS consists of four strings at depths between 80…Benjamin Semburg·Nov 7, 2008SaveLearn
The prototype string for the km3-scale Baikal neutrino telescopeA prototype string for the future km3-scale Baikal neutrino telescope has been deployed in April, 2008 and is fully integrated into the NT200+ telescope. All basic string elements - optical modules…V. Aynutdinov·Nov 7, 2008SaveLearn
The BAIKAL neutrino experiment - physics results and perspectivesWe review the status of the Lake Baikal Neutrino Experiment. The Neutrino Telescope NT200 has been operating since 1998 and has been upgraded to the 10 Mton detector NT200+ in 2005. We present…R. Wischnewski·Nov 7, 2008SaveLearn
Acoustic noise in deep ice and environmental conditions at the South PoleTo study the acoustic properties of the Antarctic ice the South Pole Acoustic Test Setup (SPATS) was installed in the upper part of drill holes for the IceCube neutrino observatory. An important…Timo Karg·Nov 7, 2008SaveLearn
GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended EmissionWe report on observations of GRB 080503, a short gamma-ray burst with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with a thorough…D. A. Perley, B. D. Metzger, J. Granot et al.·Nov 7, 2008SaveLearn