809 citations · 28.2k across the 927 of their papers we have counts for
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Multi-frequency VLBA study of the blazar S5 0716+714 during the active state in 2004: I. Inner jet kinematics
E. A. Rastorgueva, K. Wiik, T. Savolainen +4
We observed the blazar \object{0716+714} with the VLBA during its active state in 2003-2004. In this paper we discuss multi-frequency analysis of the inner jet (first 1 mas) kinema…
Improved parameters for the transiting hot Jupiters WASP-4b and WASP-5b
M. Gillon, B. Smalley, L. Hebb +6
The gaseous giant planets WASP-4b and WASP-5b are transiting 12 magnitude solar-type stars in the Southern hemisphere. The aim of the present work is to refine the parameters of th…
Episodic Magnetic Bubbles and Jets: Astrophysical Implications from Laboratory Experiments
Andrea Ciardi, Sergey V. Lebedev, Adam Frank +6
Collimated outflows (jets) are ubiquitous in the universe appearing around sources as diverse as protostars and extragalactic supermassive blackholes. Jets are thought to be magnet…
Studying the continuum spectrum of the parsec scale jets by multi-frequency VLBI measurements
T. Savolainen, K. Wiik, E. Valtaoja +1
Multi-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 o…
Secular evolution of viscous and self-gravitating circumstellar discs
E. I. Vorobyov, Shantanu Basu
We add the effect of turbulent viscosity via the α-prescription to models of the self-consistent formation and evolution of protostellar discs. Our models are non-axisymmetric and…
A multi-wavelength survey of AGN in the XMM-LSS field: I. Quasar selection via the KX technique
Th. Nakos, J. P. Willis, S. Andreon +16
AIMS: We present a sample of candidate quasars selected using the KX-technique. The data cover 0.68 deg^2 of the X-ray Multi-Mirror (XMM) Large-Scale Structure (LSS) survey area wh…
Discriminating different scenarios to account for the cosmic excess by synchrotron and inverse Compton radiation
Juan Zhang, Xiao-jun Bi, Jia Liu +4
The excesses of the cosmic positron fraction recently measured by PAMELA and the electron spectra by ATIC, PPB-BETS, Fermi and H.E.S.S. indicate the existence of primary electron a…
Introducing a Hybrid Method of Radiative Transfer for Smoothed Particle Hydrodynamics
Duncan Forgan, Ken Rice, Dimitris Stamatellos +1
A new means of incorporating radiative transfer into smoothed particle hydrodynamics (SPH) is introduced, which builds on the success of two previous methods - the polytropic cooli…
Radiative transfer in black hole systems
Kinwah Wu, Warrick Ball, Steven V. Fuerst
We present a convariant formulation for radiative transfer in curved space time and demonstrate some applications in the black-hole systems. We calculate the emission from semi-tra…
Structures, oscillations and solitons in large-scale multi-component self-gravitating systems
Kinwah Wu, Ziri Younsi, Curtis J. Saxton
We investigate the structure of dynamics of large self-gravitating astrophysical systems using a self-interacting two-component model. We consider two cases, galaxy clusters and co…
Parity violation constraints using 2006-2007 QUaD CMB polarization spectra
QUaD Collaboration, E. Y. S. Wu, P. Ade +29
We constrain parity-violating interactions to the surface of last scattering using spectra from the QUaD experiment's second and third seasons of observations by searching for a po…
First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151
Misty C. Bentz, Jonelle L. Walsh, Aaron J. Barth +24
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 13 ne…
New period-luminosity and period-color relations of classical Cepheids: III. Cepheids in SMC
A. Sandage, G. A. Tammann, B. Reindl
The photometric data for 460 classical, fundamental-mode Cepheids in the SMC with log P > 0.4 measured by Udalski et al. have been analyzed for their P-C and P-L relations, and for…
CCD and photon-counting photometric observations of asteroids carried out at Padova and Catania observatories
Davide Gandolfi, Massimo Cigna, Daniele Fulvio +1
We present the results of observational campaigns of asteroids performed at Asiago Station of Padova Astronomical Observatory and at M.G. Fracastoro Station of Catania Astrophysica…
Stellar disruption by a supermassive black hole: is the light curve really proportional to ?
G. Lodato, A. R. King, J. E. Pringle
In this paper we revisit the arguments for the basis of the time evolution of the flares expected to arise when a star is disrupted by a supermassive black hole. We present a simpl…
RXTE-PCA Observations of XMMU J054134.7-682550
S. C. Inam, L. J. Townsend, V. A. McBride +3
We analyzed RXTE-PCA observations of a recent outburst of the X-ray pulsar XMMU J054134.7682550. We calculated the pulse frequency history of the source. We found no sign of a b…
Swift Observations of Shock Evolution in RS Ophiuchi
M. F. Bode, J. P. Osborne, K. L. Page +11
Our \textit{Swift} observations of RS Oph form an unprecedented X-ray dataset to undertake investigations of both the central source and the interaction of the outburst ejecta with…
FUSE spectroscopy of sdOB primary of the post common-envelope binary LB 3459 (AA Dor)
Johannes Fleig, Thomas Rauch, Klaus Werner +1
LB 3459 (AA Dor) is an eclipsing, close, post common-envelope binary consisting of an sdOB primary star and an unseen secondary with an extraordinarly low mass - formally a brown d…
Direct evidence of a sub-stellar companion around CT Cha
T. O. B. Schmidt, R. Neuhäuser, A. Seifahrt +5
In our ongoing search for close and faint companions around T Tauri stars, we found a very faint (Ks=14.9mag, Ks_0=14.4mag) object, just ~2.67" northwest of the Chamaeleon star-for…
Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment
H. S. Ahn, P. S. Allison, M. G. Bagliesi +34
We present new measurements of heavy cosmic-ray nuclei at high energies per- formed during the first flight of the balloon-borne cosmic-ray experiment CREAM (Cosmic-Ray Energetics…
Molecular Gas in NUclei of GAlaxies (NUGA). X. The Seyfert 2 galaxy NGC 3147
V. Casasola, F. Combes, S. Garcia-Burillo +3
We present CO(1-0) and CO(2-1) observations of the SA(rs)bc Seyfert 2 galaxy NGC 3147, obtained with the IRAM interferometer at 1\farcs9 1\farcs6 and 1\farcs6 1\far…
Three X-ray transients in M31 observed with Swift
R. Voss, W. Pietsch, F. Haberl +5
The purpose of this study is to find transient X-ray sources in M31, and to investigate and classify their nature. Three X-ray transients were observed with Swift. For each of the…
The Red Sequence of High-Redshift Clusters: a Comparison with Cosmological Galaxy Formation Models
N. Menci, P. Rosati, R. Gobat +4
We compare the results from a semi-analytic model of galaxy formation with spectro-photometric observations of distant galaxy clusters observed in the range 0.8< z< 1.3. We investi…
The symbiotic star CH Cygni. II. The broad Ly alpha emission line explained by shocks
M. Contini, R. Angeloni, P. Rafanelli
Context. In 1985, at the end of the active phase 1977-1986, a broad (4000 km/s) Ly alpha line appeared in the symbiotic system CH Cygni that had never been observed previously. Aim…