Global dynamics of high area-to-mass ratios GEO space debris by means of the MEGNO indicatorIn this paper we provide an extensive analysis of the global dynamics of high-area-to-mass ratios geosynchronous (GEO) space debris, applying a recent technique developed by Cincotta et al. (2000),…S. Valk, N. Delsate, A. Lemaitre et al.·Oct 10, 2008SaveLearn
Implications of Ultra-High-Energy Cosmic Rays for Transient Sources in the Auger EraWe study about ultra-high-energy cosmic rays (UHECRs) from transient sources, propagating in the Galactic and intergalactic space. Based on the recent observational results, we also estimate upper…Kohta Murase, Hajime Takami·Oct 10, 2008SaveLearn
Black Holes in Pseudobulges and Spheroidals: A Change in the Black Hole-Bulge Scaling Relations at Low MassWe investigate the relationship between black hole mass and host galaxy properties for active galaxies with the lowest black hole masses currently known in galaxy nuclei. Hubble Space Telescope…Jenny E. Greene, Luis C. Ho, Aaron J. Barth·Oct 10, 2008SaveLearn
Expanding Ejecta in the Oxygen-Rich Supernova Remnant G292.0+1.8: Direct Measurement through Proper MotionsWe report here the first study of proper motions of fast filaments in the young, oxygen-rich supernova remnant G292.0+1.8, carried out using a series of [O III] 5007 A emission-line images taken over…P. Frank Winkler, Karl Twelker, Claudine N. Reith et al.·Oct 10, 2008SaveLearn
Photometric variability of WC9 starsDo some Wolf-Rayet stars owe their strong winds to something else besides radiation pressure? The answer to this question is still not entirely obvious, especially in certain Wolf-Rayet subclasses,…R. Fahed, A. F. J. Moffat, A. Z. Bonanos·Oct 10, 2008SaveLearn
A likely optical counterpart of the G292.0+1.8 pulsar wind nebulaG292.0+1.8 is the Cas A-like supernova remnant containing the young pulsar PSR J1124-5916, which powers a compact torus-like pulsar wind nebula with a jet visible in X-rays. We have performed deep…S. V. Zharikov, Yu. A. Shibanov, D. A. Zyuzin et al.·Oct 10, 2008SaveLearn
Evolution of the Color-Magnitude Relation in Galaxy Clusters at z ~1 from the ACS Intermediate Redshift Cluster SurveyWe apply detailed observations of the Color-Magnitude Relation (CMR) with the ACS/HST to study galaxy evolution in eight clusters at z~1. The early-type red sequence is well defined and elliptical…Simona Mei, Brad P. Holden, John P. Blakeslee et al.·Oct 10, 2008SaveLearn
Photodesorption of water ice: a molecular dynamics studyAbsorption of ultraviolet radiation by water ice coating interstellar grains can lead to dissociation and desorption of the ice molecules. These processes are thought to be important in the gas-grain…S. Andersson, E. F. van Dishoeck·Oct 10, 2008SaveLearn
A Spitzer search for cold dust within globular clustersGlobular cluster stars evolving off the main sequence are known to lose mass, and it is expected that some of the lost material should remain within the cluster as an intracluster medium (ICM). Most…P. Barmby, M. L. Boyer, C. E. Woodward et al.·Oct 10, 2008SaveLearn
A search for spectroscopic binaries in the galactic globular cluster M4. Based on 5973 individual spectra collected at VLTWe present a large multi-epoch high resolution spectroscopic investigation for the search of binary candidates in the Galactic Globular Cluster (GGC) M4. The aim of our work is the identification of…V. Sommariva, G. Piotto, M. Rejkuba et al.·Oct 10, 2008SaveLearn
Peculiar Red Nova V838 Mon: Accretion and Interaction in a Wide Binary System after Explosion of Its CompanionWe report the results of recent multicolor photometry and medium resolution spectroscopy of V838 Mon taken in 2007-2008. In the eclipse-like event in December 2006, the hot B3V type companion…Vitaly Goranskij, Alla Zharova, Elena Barsukova et al.·Oct 10, 2008SaveLearn
Statistical Analysis of Galaxy Surveys - I. Robust error estimation for 2-point clustering statisticsWe present a test of different error estimators for 2-point clustering statistics, appropriate for present and future large galaxy redshift surveys. Using an ensemble of very large dark matter…Peder Norberg, Carlton M. Baugh, Enrique Gaztanaga et al.·Oct 10, 2008SaveLearn
The INTEGRAL long monitoring of persistent Ultra Compact X-ray BurstersThe combination of compact objects, short period variability and peculiar chemical composition of the Ultra Compact X-ray Binaries make up a very interesting laboratory to study accretion processes…M. Fiocchi, A. Bazzano, P. Ubertini et al.·Oct 10, 2008SaveLearn
Evolution of initially localized perturbations in stratified ionized disksA detailed solution of an initial value problem of a vertically localized initial perturbation in rotating magnetized vertically stratified disk is presented. The appropriate linearized MHD equations…Edward Liverts, Michael Mond·Oct 10, 2008SaveLearn
Variation in p-mode power over solar cycle 23 as seen from BiSON and GOLF observationsWe analyzed BiSON and GOLF/SoHO data with a new technique, to investigate p-mode power variation over solar cycle 23. We found a decrease in the mean velocity power of about 20% for BiSON during the…R. Simoniello, D. Salabert, R. A. Garcia·Oct 10, 2008SaveLearn
Rotation on sub-kpc scales in the strongly lensed z~3 'arc&core' and implications for high-redshift galaxy dynamicsStrongly lensed galaxies at high redshift provide a unique window into the early universe. We compare the internal kinematics of the strongly lensed Lyman-break galaxy (LBG) 'arc&core' at…N. P. H. Nesvadba, M. D. Lehnert, B. L. Frye·Oct 10, 2008SaveLearn
INTEGRAL/IBIS and Swift/XRT observations of hard cataclysmic variablesThe analysis of the third INTEGRAL/IBIS survey has revealed several new cataclysmic variables, most of which turned out to be intermediate polars, thus confirming that these objects are strong…R. Landi, L. Bassani, A. J. Dean et al.·Oct 10, 2008SaveLearn
Design and construction of the Mini-Calorimeter of the AGILE satelliteAGILE is a small space mission of the Italian Space Agency (ASI) devoted to gamma-ray and hard-X astrophysics, successfully launched on April 23 2007. The AGILE Payload is composed of three…C. Labanti, M. Marisaldi, F. Fuschino et al.·Oct 10, 2008SaveLearn
Beyond ideal MHD: towards a more realistic modeling of relativistic astrophysical plasmasMany astrophysical processes involving magnetic fields and quasi-stationary processes are well described when assuming the fluid as a perfect conductor. For these systems, the…Carlos Palenzuela, Luis Lehner, Oscar Reula et al.·Oct 10, 2008SaveLearn
Further X-ray detections of Herbig starsThe interpretation of X-ray detections from Herbig Ae/Be stars is disputed as it is not clear if these intermediate-mass pre-main sequence stars are able to drive a dynamo and ensuing phenomena of…B. Stelzer, J. Robrade, J. H. M. M. Schmitt et al.·Oct 10, 2008SaveLearn
GOLF: a new proxy for solar magnetismSolar magnetism is measured with different indexes: for instance the MPSI and the MWSI, number of sunspots, radio flux at 10.7 cm, Ca II K, Mg II K, EUV, He I or Lalpha. Bachmann & White (1994) had…S. Mathur, S. J. Jimenez-Reyes, R. A. Garcia·Oct 10, 2008SaveLearn
The magnetohydrodynamics model of twin kilohertz QPOs in LMXBsWe suggest an explanation for the twin kilohertz quasi-periodic oscillations (kHz QPOs) in low-mass X-ray binaries (LMXBs) based on magnetohydrodynamics (MHD) oscillation modes in neutron star…Changsheng Shi, Xiang-Dong Li·Oct 10, 2008SaveLearn
A Simple Comptonization ModelWe present an empirical model of Comptonization for fitting the spectra of X-ray binaries. This model, "simpl", has been developed as a package implemented in XSPEC. With only two free…James F. Steiner, Ramesh Narayan, Jeffrey E. McClintock et al.·Oct 9, 2008SaveLearn
Large scale galactic turbulence: can self-gravity drive the observed HI velocity dispersions?Observations of turbulent velocity dispersions in the HI component of galactic disks show a characteristic floor in galaxies with low star formation rates and within individual galaxies the…Oscar Agertz, George Lake, Romain Teyssier et al.·Oct 9, 2008SaveLearn
Central mass and luminosity of Milky Way satellites in the LCDM modelIt has been pointed out that the Galactic satellites all have a common mass around 1e7 Msun within 300 pc (M03), while they span almost four order of magnitudes in luminosity (Mateo et al. 1993,…Andrea V. Maccio', Xi Kang, Ben Moore·Oct 9, 2008SaveLearn