Empirical evidence for tidal evolution in transiting planetary systemsMost transiting planets orbit very close to their parent star, causing strong tidal forces between the two bodies. Tidal interaction can modify the dynamics of the system through orbital alignment,…Frederic Pont·Dec 8, 2008SaveLearn
CMB anisotropy induced by tachyonic perturbations of dark energyWe study effects of possible tachyonic perturbations of dark energy on the CMB temperature anisotropy. Motivated by some models of phantom energy, we consider both Lorentz-invariant and…M. V. Libanov, V. A. Rubakov, O. S. Sazhina et al.·Dec 8, 2008SaveLearn
Origin and Nature of Dust in the Early UniverseWe present recent advances in theoretical studies of the formation and evolution of dust in primordial supernovae (SNe) that are considered to be the main sources of dust in the early universe. Being…T. Nozawa, T. Kozasa, H. Umeda et al.·Dec 8, 2008SaveLearn
3D Genus Topology of Luminous Red GalaxiesWe measure the 3D genus topology of large scale structure using Luminous Red Galaxies (LRGs) in the Sloan Digital Sky Survey and find it consistent with the Gaussian random phase initial conditions…J. Richard Gott, Yun-Young Choi, Changbom Park et al.·Dec 8, 2008SaveLearn
Search for VHE γ-ray emission in the vicinity of selected pulsars of the Northern Sky with VERITASIt is generally believed that pulsars dissipate their rotational energy through powerful winds of relativistic particles. Confinement of these winds leads to the formation of luminous pulsar wind…Ester Aliu·Dec 8, 2008SaveLearn
A giant bar induced by a merger event at z=0.4?(Aims) We present a physical model of the formation of J033239.72-275154.7, a galaxy observed at z=0.41 and characterized by a big young bar of size 6 kpc. The study of this system is particularly…Sébastien Peirani, Francois Hammer, Hector Flores et al.·Dec 8, 2008SaveLearn
Distinguishing between Planetary and Binary Interpretations of Microlensing Central Perturbations under Severe Finite-Source EffectIn the current strategy of microlensing planet searches focusing on high-magnification events, wide and close binaries pose important sources of contamination that imitates planetary signals. For the…Cheongho Han·Dec 8, 2008SaveLearn
The Young, Massive, Star Cluster Sandage-96 After the Explosion of SN 2004dj in NGC 2403The bright Type II-plateau supernova (SN) 2004dj occurred within the young, massive stellar cluster Sandage-96 in a spiral arm of NGC 2403. New multi-wavelength observations obtained with several…J. Vinko, K. Sarneczky, Z. Balog et al.·Dec 8, 2008SaveLearn
Compact groups in theory and practice - III. Compact groups of galaxies in the Sixth Data Release of the Sloan Digital Sky SurveyWe present the largest publicly available catalogue of compact groups of galaxies identified using the original selection criteria of Hickson, selected from the Sixth Data Release (DR6) of the Sloan…Alan McConnachie, David Patton, Sara Ellison et al.·Dec 8, 2008SaveLearn
Landau Damping and Alfven Eigenmodes of Neutron Star Torsion OscillationsTorsion oscillations of the neutron star crust are Landau damped by the Alfven continuum in the bulk. For strong magnetic fields (in magnetars), undamped Alfven eigenmodes appear.Andrei Gruzinov·Dec 8, 2008SaveLearn
Double quasars: probes of black hole scaling relationships and merger scenariosWe analyze the available sample of double quasars, and investigate their physical properties. Our sample comprises 85 pairs, selected from the Sloan Digital Sky Survey (SDSS). We derive physical…Gary Foreman, Marta Volonteri, Massimo Dotti·Dec 8, 2008SaveLearn
The warped young stellar disc in the Galactic CentreWithin the central parsec of the Galaxy, several tens of young stars orbiting a central supermassive black hole are observed. A subset of these stars forms a coherently rotating disc. Other…L. Subr, J. Schovancova, P. Kroupa·Dec 8, 2008SaveLearn
[On the jet contribution to the AGN cosmic energy budgetBlack holes release energy via the production of photons in their accretion discs but also via the acceleration of jets. We investigate the relative importance of these two paths over cosmic time by…A. Cattaneo, P. N. Best·Dec 8, 2008SaveLearn
Warping the young stellar disc in the Galactic CentreWe examine influence of the circum-nuclear disc (CND) upon the orbital evolution of young stars in the Galactic Centre. We show that gravity of the CND causes precession of the orbits which is highly…Ladislav Subr, Jaroslava Schovancova·Dec 8, 2008SaveLearn
Investigating the potential of the Pan-Planets project using Monte Carlo simulationsUsing Monte Carlo simulations we analyze the potential of the upcoming transit survey Pan-Planets. The analysis covers the simulation of realistic light curves (including the effects of…J. Koppenhoefer, C. Afonso, R. P. Saglia et al.·Dec 8, 2008SaveLearn
Sub-Microarcsecond Astrometry with SIM-Lite: A Testbed-based Performance AssessmentSIM-Lite is an astrometric interferometer being designed for sub-microarcsecond astrometry, with a wide range of applications from searches for Earth-analogs to determining the distribution of dark…M. Shao, B. Nemati·Dec 8, 2008SaveLearn
New Results of Observations of the Only Supernova Remnant in the IC1613 GalaxyThe new results of a study of the kinematics of the supernova remnant S8 in the IC1613 galaxy are reported. The expansion velocity of the bright optical nebula is determined based on observations…T. A. Lozinskaya, N. Yu Podorvanyuk·Dec 8, 2008SaveLearn
The June 2008 flare of Markarian 421 from optical to TeV energiesWe present optical, X-ray, high energy ( 30 GeV) and very high energy ( 100 GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between 2008 May 24 and…The Agile Collaboration, Webt Collaboration, Magic Collaboration et al.·Dec 8, 2008SaveLearn
Extremely faint high proper motion objects from SDSS stripe 82 - Optical classification spectroscopy of about 40 new objects(abridged) Deep multi-epoch Sloan Digital Sky Survey data in a 275 square degrees area along the celestial equator (SDSS stripe 82 = S82) allowed us to search for extremely faint (i>21) objects…R. -D. Scholz, J. Storm, G. R. Knapp et al.·Dec 8, 2008SaveLearn
Could the Fermi-LAT detect gamma-rays from dark matter annihilation in the dwarf galaxies of the Local Group?The detection of gamma-rays from dark matter (DM) annihilation is among the scientific goals of the Fermi Large Area Telescope (formerly known as GLAST) and Cherenkov telescopes. In this paper we…L. Pieri, A. Pizzella, E. M. Corsini et al.·Dec 8, 2008SaveLearn
Studying the continuum spectrum of the parsec scale jets by multi-frequency VLBI measurementsMulti-frequency VLBI observations allow studies of the continuum spectrum in the different parts of the parsec scale jets of AGN, providing information on the physical properties of the plasma and…T. Savolainen, K. Wiik, E. Valtaoja et al.·Dec 8, 2008SaveLearn
Reduction of polarimetric data using Mueller calculus applied to Nasmyth instrumentsWe present a method based on Mueller calculus to calibrate linear polarimetric observations. The key advantages of the proposed way of calibration are: (1) that it can be implemented in a data…Franco Joos, Esther Buenzli, Hans Martin Schmid et al.·Dec 8, 2008SaveLearn
On the turbulent sources of the solar dynamoWe revisit the possible turbulent sources of the solar dynamo. Studying axisymmetric mean-field dynamo models, we find that the large-scale poloidal magnetic field could be generated not only by the…V. V. Pipin, N. Seehafer·Dec 8, 2008SaveLearn
The Ly-alpha profile and center-to-limb variation of the quiet SunWe study the emission of the hydrogen Lyman-a line in the quiet Sun, its center-to-limb variation (CLV), and its radiance distribution. We also compare quasi-simultaneous Ly-a and Ly-b line profiles.…W. Curdt, H. Tian, L. Teriaca et al.·Dec 8, 2008SaveLearn
Hard X-ray Properties of the Merging Cluster Abell 3667 as Observed with SuzakuWide-band Suzaku data on the merging cluster Abell 3667 were examined for hard X-ray emission in excess to the known thermal component. Suzaku detected X-ray signals in the wide energy band from 0.5…Kazuhiro Nakazawa, Craig L. Sarazin, Madoka Kawaharada et al.·Dec 8, 2008SaveLearn