Physics of the central region in the quasar 0850+581The apparent position of the origin (core) of extragalactic radio jets shifts with the observing frequency, owing to synchrotron self-absorption and external absorption. One of the largest core…Y. Y. Kovalev, A. P. Lobanov, A. B. Pushkarev·Oct 13, 2008SaveLearn
Angular Diameters of the Hyades Giants Measured with the CHARA ArrayWe present angular diameters of the Hyades giants, gamma, delta1, epsilon, and theta1 Tau from interferometric measurements with the CHARA Array. Our errors in the limb-darkened angular diameters…Tabetha S. Boyajian, Harold A. McAlister, Justin R. Cantrell et al.·Oct 13, 2008SaveLearn
Propagation of High Frequency Waves in the Quiet Solar AtmosphereHigh-frequency waves (5 mHz to 20mHz) have previously been suggested as a source of energy accounting partial heating of the quiet solar atmosphere. The dynamics of previously detected high-frequency…Aleksandra Andić·Oct 13, 2008SaveLearn
EK Eridani: the tip of the iceberg of giants which have evolved from magnetic Ap starsWe observe the slowly-rotating, active, single giant, EK Eri, to study and infer the nature of its magnetic field directly. We used the spectropolarimeter NARVAL at the Telescope Bernard Lyot, Pic du…M. Aurière, R. Konstantinova-Antova, P. Petit et al.·Oct 13, 2008SaveLearn
Double relics in Abell 2345 and Abell 1240: spectral index and polarization analysisThe aim of the present work is to study the radio properties of double relics in Abell 1240 and Abell 2345 in the framework of double relic formation models. We present new Very Large Array…A. Bonafede, G. Giovannini, L. Feretti et al.·Oct 13, 2008SaveLearn
A Numerical Testbed for Hypotheses of Extraterrestrial Life and IntelligenceThe search for extraterrestrial intelligence (SETI) has been heavily influenced by solutions to the Drake Equation, which returns an integer value for the number of communicating civilisations…Duncan Forgan·Oct 13, 2008SaveLearn
On the possible observational manifestation of supernova shock impact on the neutron star magnetosphereImpact of supernova explosion on the neutron star magnetosphere in a massive binary system is considered. The supernova shock striking the NS magnetosphere filled with plasma can lead to the…A. E. Egorov, K. A. Postnov·Oct 13, 2008SaveLearn
Roma-BZCAT: A multifrequency catalogue of BlazarsWe present a new catalogue of blazars based on multi-frequency surveys and on an extensive review of the literature. Blazars are classified as BL Lacertae objects, as flat spectrum radio quasars or…E. Massaro, P. Giommi, C. Leto et al.·Oct 13, 2008SaveLearn
A parsec scale X-ray extended structure from the X-ray binary Circinus X-1We present the results of the analysis of two Chandra observations of Circinus X-1 performed in 2007, for a total exposure time of ~50 ks. The source was observed with the High Resolution Camera…P. Soleri, S. Heinz, R. Fender et al.·Oct 13, 2008SaveLearn
AGILE observation of a gamma-ray flare from the blazar 3C 279Context. We report the detection by the AGILE satellite of an intense gamma-ray flare from the gamma-ray source 3EG J1255-0549, associated to the Flat Spectrum Radio Quasar 3C 279, during the AGILE…A. Giuliani, F. D'Ammando, S. Vercellone et al.·Oct 13, 2008SaveLearn
The Fate of Substructures in Cold Dark Matter HaloesWe use the Millennium Simulation, a large, high resolution N-body simulation of the evolution of structure in a LambdaCDM cosmology, to study the properties and fate of substructures within a large…R. E. Angulo, C. G. Lacey, C. M. Baugh et al.·Oct 13, 2008SaveLearn
Eddington ratios of faint AGN at intermediate redshift: Evidence for a population of half-starved black holesWe use one of the deepest spectroscopic samples of broad line active galactic nuclei (AGN) currently available, extracted from the VIMOS VLT Deep Survey (VVDS), to compute MgII and CIV virial masses…I. Gavignaud, L. Wisotzki, A. Bongiorno et al.·Oct 13, 2008SaveLearn
Modelling Starburst in HII galaxies: From chemical to spectro-photometric evolutionary self-consistent modelsWe have computed a series of realistic and self-consistent models that reproduce the properties of HII galaxies. The emitted spectrum of HII galaxies is reproduced by means of the photoionization…M. L. Martin-Manjon, M. Molla, A. I. Diaz et al.·Oct 13, 2008SaveLearn
The implications from CANGAROO-III observations of TeV blazar PKS 2155-304We have observed the high-frequency-peaked BL Lacertae object PKS2155-304 in 2004, 2005 and 2006 with the CANGAROO-III imaging atmospheric Cherenkov telescope, and have detected a signal above 660…K. Nishijima, Y. Sakamoto, J. Kushida et al.·Oct 13, 2008SaveLearn
Two New Variable Hot DQ StarsWe have discovered periodic variations in the light curves of two hot DQ stars from the Sloan Digital Sky Survey, SDSS J220029.08-074121.5 and SDSS J234843.30-094245.3. These are the second and third…B. N. Barlow, B. H. Dunlap, R. Rosen et al.·Oct 13, 2008SaveLearn
Dynamical Centers and Non-Circular Motions in THINGS Galaxies: Implications for Dark Matter HalosWe present harmonic decompositions of the velocity fields of 19 galaxies from THINGS (The Nearby Galaxy Survey) which quantify the magnitude of the non-circular motions in these galaxies and…C. Trachternach, W. J. G. de Blok, F. Walter et al.·Oct 12, 2008SaveLearn
Topology of non-linear structure in the 2dF Galaxy Redshift SurveyWe study the evolution of non-linear structure as a function of scale in samples from the 2dF Galaxy Redshift Survey, constituting over 221 000 galaxies at a median redshift of z=0.11. The two…J. Berian James, Matthew Colless, Geraint F. Lewis et al.·Oct 12, 2008SaveLearn
Constraints on dark energy models from radial baryon acoustic scale measurementsWe use the radial baryon acoustic oscillation (BAO) measurements of Gaztanaga et al. (2008) to constrain parameters of dark energy models. These constraints are comparable with constraints from other…Lado Samushia, Bharat Ratra·Oct 12, 2008SaveLearn
The Effect of Lunar-like Satellites on the Orbital Infrared Light Curves of Earth-analog PlanetsWe investigate the influence of lunar-like satellites on the infrared orbital light curves of Earth-analog extra-solar planets. Such light curves will be obtained by NASA's Terrestrial Planet…Nicholas A. Moskovitz, Eric Gaidos, Darren Williams·Oct 12, 2008SaveLearn
THINGS: The HI Nearby Galaxy SurveyWe present "The HI Nearby Galaxy Survey (THINGS)", a high spectral (<=5.2 km/s) and spatial (~6") resolution survey of HI emission in 34 nearby galaxies obtained using the NRAO Very Large…F. Walter, E. Brinks, W. J. G. de Blok et al.·Oct 12, 2008SaveLearn
High-resolution dark matter density profiles of THINGS dwarf galaxies: Correcting for non-circular motionsWe present a new method to remove the impact of random and small-scale non-circular motions from HI velocity fields in galaxies in order to better constrain the dark matter properties for these…Se-Heon Oh, W. J. G. de Blok, Fabian Walter et al.·Oct 12, 2008SaveLearn
On the stability of compact supermassive objectsProceeded from the gravitation equations proposed by one of authors it was argued in a previous paper that there can exist supermassive compact configurations of degenerated Fermi-gas without events…L. Verozub, A. Kochetov·Oct 12, 2008SaveLearn
The sub-solar Initial Mass Function in the Large Magellanic CloudThe Magellanic Clouds offer a unique variety of star forming regions seen as bright nebulae of ionized gas, related to bright young stellar associations. Nowadays, observations with the high…Dimitrios A. Gouliermis·Oct 12, 2008SaveLearn
XTE J1901+014 - the First Low-Mass Fast X-ray Transient?We continue to study the fast X-ray transient XTE J1901+014 discovered in 2002 by the RXTE observatory, whose nature has not yet been established. Based on the XMM-Newton observations of the source…D. I. Karasev, A. A. Lutovinov, R. A. Burenin·Oct 12, 2008SaveLearn
Solar Energetic Particle Spectrum on 13 December 2006 Determined by IceTopOn 13 December 2006 the IceTop air shower array at the South Pole detected a major solar particle event. By numerically simulating the response of the IceTop tanks, which are thick Cherenkov…R. Abbasi·Oct 11, 2008SaveLearn