Cosmic Rays above the KneeAn overview on the present observational status and phenomenological understanding of cosmic rays above 1016 eV is given. Above these energies the cosmic ray flux is expected to be gradually…Michael Unger·Dec 15, 2008SaveLearn
Binary Black Hole Merger in Galactic Nuclei: Post-Newtonian SimulationsThis paper studies the formation and evolution of binary supermassive black holes (SMBHs) in rotating galactic nuclei, focusing on the role of stellar dynamics. We present the first N-body…Ingo Berentzen, Miguel Preto, Peter Berczik et al.·Dec 15, 2008SaveLearn
Search for Redshifted 2.2 MeV Neutron Capture Line From A0535+262 in OutburstThe Be/X-ray binary system A0535+262 underwent a giant outburst in May-June 2005, followed by a dimmer outburst in August-September 2005. This increased intensity provided an opportunity to search…Sirin Caliskan, Emrah Kalemci, Matthew G. Baring et al.·Dec 15, 2008SaveLearn
Gravitational wave detection using pulsars: status of the Parkes Pulsar Timing Array projectThe first direct detection of gravitational waves may be made through observations of pulsars. The principal aim of pulsar timing array projects being carried out worldwide is to detect ultra-low…G. B. Hobbs, M. Bailes, N. D. R. Bhat et al.·Dec 15, 2008SaveLearn
Chandra Cluster Cosmology Project III: Cosmological Parameter ConstraintsChandra observations of large samples of galaxy clusters detected in X-rays by ROSAT provide a new, robust determination of the cluster mass functions at low and high redshifts. Statistical and…A. Vikhlinin, A. V. Kravtsov, R. A. Burenin et al.·Dec 15, 2008SaveLearn
New Limits on the Ultra-high Energy Cosmic Neutrino Flux from the ANITA ExperimentWe report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffuse flux of cosmic…ANITA collaboration, P. Gorham, P. Allison et al.·Dec 15, 2008SaveLearn
Molecular Dynamics Simulation of Shear Moduli for Coulomb CrystalsTorsional (shear) oscillations of neutron stars may have been observed in quasiperiodic oscillations of Magnetar Giant Flares. The frequencies of these modes depend on the shear modulus of neutron…C. J. Horowitz, J. Hughto·Dec 15, 2008SaveLearn
Study of the stellar line-strength indices and kinematics along barsThis is the first paper of a series aimed to understand the formation and evolution of bars in early-type spirals and their influence in the evolution of the galaxy. Optical long-slit spectra along…I. Perez, P. Sanchez-Blazquez, A. Zurita·Dec 15, 2008SaveLearn
Post Common Envelope Binaries from SDSS. V: Four eclipsing white dwarf main sequence binariesWe identify SDSS011009.09+132616.1, SDSS030308.35+005444.1, SDSS143547.87+373338.5 and SDSS154846.00+405728.8 as four eclipsing white dwarf plus main sequence (WDMS) binaries from the Sloan Digital…S. Pyrzas, B. T. Gänsicke, T. R. Marsh et al.·Dec 15, 2008SaveLearn
Intensity Scintillation and Astronomical Quantum ObservationHolography is 3D imaging which can record intensity and phase at the same time. The importance of construct hologram is holographic recording and wavefront reconstruction. It is surprised that…Jiang Dong·Dec 14, 2008SaveLearn
Pulsar Navigation in the Solar SystemThe X-ray Navigation and Autonomous position Verification (XNAV) is tested which use the Crab pulsar under the Space Test Program that use starlight refraction. It provide the way that the spacecraft…Jiang Dong·Dec 14, 2008SaveLearn
Statistical mechanics of gravitating systems: An OverviewI review several issues related to statistical description of gravitating systems in both static and expanding backgrounds. After briefly reviewing the results for the static background, I…T. Padmanabhan·Dec 14, 2008SaveLearn
A new model for infrared and submillimetre countsA new model for source counts from 8-1100 μm is presented, which agrees well with source-count data and the observed background spectrum. The model is similar to that of Rowan-Robinson (2001), but…Michael Rowan-Robinson·Dec 14, 2008SaveLearn
Discovery of a rapidly pulsating subdwarf B star candidate in omega CenWe report the discovery of the first variable extreme horizontal branch star in a globular cluster (omega Cen). The oscillation uncovered has a period of 114 s and an amplitude of 32 mmags. A…S. K. Randall, A. Calamida, G. Bono·Dec 14, 2008SaveLearn
On the origin of macroturbulence in hot starsSince the use of high-resolution high signal-to-noise spectroscopy in the study of massive stars, it became clear that an ad-hoc velocity field at the stellar surface, termed macroturbulence, is…C. Aerts, J. Puls, M. Godart et al.·Dec 14, 2008SaveLearn
Star-forming galaxies in SDSS: signs of metallicity evolutionEvolution of galaxies through cosmic time has been widely studied at high redshift, but there are a few studies in this field at lower redshifts. However, low-redshifts studies will provide important…M. A. Lara-Lopez, J. Cepa, A. Bongiovanni et al.·Dec 14, 2008SaveLearn
Triggered star formation on the borders of the Galactic HII region RCW 82We are engaged in a multi-wavelength study of several Galactic HII regions that exhibit signposts of triggered star formation on their borders, and where the collect and collapse process could be at…M. Pomares, A. Zavagno, L. Deharveng et al.·Dec 14, 2008SaveLearn
Effects of Fluid Composition on Spherical Flows around Black HolesSteady, spherically symmetric, adiabatic accretion and wind flows around non-rotating black holes were studied for fully ionized, multi-component fluids, which are described by a relativistic…Indranil Chattopadhyay, Dongsu Ryu·Dec 14, 2008SaveLearn
Ubiquitous H-alpha polarized line profiles: absorptive spectropolarimetric effects and temporal variability in Post-AGB, Herbig Ae/Be and other stellar typesWe show here that the absorptive H-alpha polarized line profile previously seen in many Herbig Ae/Be (HAeBe) stars is a nearly ubiquitous feature of other types of embedded or obscured stars. This…D. M. Harrington, J. R. Kuhn·Dec 14, 2008SaveLearn
Evidence of Star Formation in Local S0 Galaxies: Spitzer Observations of the SAURON SampleWe discuss infrared Spitzer observations of early type galaxies in the SAURON sample at 24, 60 and 170 microns. When compared with 2MASS Ks band luminosities, lenticular (S0) galaxies exhibit a much…Pasquale Temi, Fabrizio Brighenti, William G. Mathews et al.·Dec 14, 2008SaveLearn
Magnetic Fields in Paradigms of Planetary Nebulae and Related MHD FrontiersMany, if not all, post AGB stellar systems swiftly transition from a spherical to a powerful aspherical pre-planetary nebula (pPNE) outflow phase before waning into a PNe. The pPNe outflows require…Eric G. Blackman·Dec 14, 2008SaveLearn
Detecting Magnetic Fields in Large-Scale Structure with Radio PolarizationWe present our attempts to detect magnetic fields in filamentary large-scale structure (LSS) by observing polarized synchrotron emission emitted by structure formation shocks. Little is known about…Shea Brown, Lawrence Rudnick, Damon Farnsworth·Dec 13, 2008SaveLearn
Anisotropic winds from close-in extra-solar planetsWe present two-dimensional hydrodynamic models of thermally driven winds from highly irradiated, close-in extra-solar planets. We adopt a very simple treatment of the radiative heating processes at…James M. Stone, Daniel Proga·Dec 13, 2008SaveLearn
The multiplicity of exoplanet host stars - New low-mass stellar companions of the exoplanet host stars HD125612 and HD212301Aims: We present new results from our ongoing multiplicity study of exoplanet host stars, carried out with SofI/NTT. We provide the most recent list of confirmed binary and triple star systems that…M. Mugrauer, R. Neuhaeuser·Dec 13, 2008SaveLearn
The environment of the fast rotating star Achernar - Thermal infrared interferometry with VLTI/MIDI and SIMECA modelingContext: As is the case of several other Be stars, Achernar is surrounded by an envelope, recently detected by near-IR interferometry. Aims: We search for the signature of circumstellar emission at…Pierre Kervella, Armando Domiciano De Souza, Samer Kanaan et al.·Dec 13, 2008SaveLearn