809 citations · 28.2k across the 927 of their papers we have counts for
25 papers · 2 filters
Atomic lines in infrared spectra for ultracool dwarfs
Yu. Lyubchik, H. R. A. Jones, Ya. V. Pavlenko +3
We provide a set of atomic lines which are suitable for the description of ultracool dwarf spectra from 10000 to 25000 Å. This atomic linelist was made using both synthetic spectra…
The Size of the Longest Filaments in the Universe
Somnath Bharadwaj, Suketu Bhavsar, Jatush V. Sheth
We analyze the filamentarity in the Las Campanas redshift survey (LCRS) and determine the length scale at which filaments are statistically significant. The largest length-scale at…
XMM-Newton observations of two X-ray bright galaxy groups - pushing out to r_500
Jesper Rasmussen, Trevor J. Ponman
We report on the results of XMM-Newton observations of the z=0.18 galaxy group WARPJ0943.7+1644 and the nearby poor cluster WARPJ0943.5+1640 at z=0.256. Tracing the X-ray gas out t…
Spectropolarimetry of Compton-thin Seyfert 2s
S. L. Lumsden, D. M. Alexander, J. H. Hough
We present new spectropolarimetry of a sample of nearby Compton-thin Seyfert 2 galaxies (ie those with N_H<10^23 cm^-2). We show that the detection rate of scattered broad Halpha i…
Time Structure of Muonic Showers
L. Cazon, R. A. Vazquez, A. A. Watson +1
An analytical description of the time structure of the pulses induced by muons in air showers at ground level is deduced assuming the production distance distribution for the muons…
XMM-Newton observation of Kepler's supernova remnant
G. Cassam-Chenai, A. Decourchelle, J. Ballet +3
We present the first results coming from the observation of Kepler's supernova remnant obtained with the EPIC instruments on board the XMM-Newton satellite. We focus on the images…
Mid- to Far-Infrared spectroscopy of Sharpless 171
Y. Okada, T. Onaka, H. Shibai +1
We have collected one-dimensional raster-scan observations of the active star-forming region Sharpless 171 (S171), a typical HII region-molecular cloud complex, with the three spec…
Radio Cores of Bipolar Nebulae: Search for Collimated Winds
Ting-Hui Lee, Jeremy Lim, Sun Kwok
We present results of our search for collimated ionized winds in bipolar nebulae using the Very Large Array (VLA) and the Australia Telescope Compact Array (ATCA). Our search is mo…
From the Circumnuclear Disk in the Galactic Center to thick, obscuring tori of AGNs
B. Vollmer, T. Beckert, W. J. Duschl
We compare three different models of clumpy gas disk and show that the Circumnuclear Disk (CND) in the Galactic Center and a putative, geometrically thick, obscuring torus are best…
Arakelian 564: An XMM-Newton view
C. Vignali, W. N. Brandt, Th. Boller +2
We report on two XMM-Newton observations of the bright narrow-line Seyfert 1 galaxy Ark 564 taken one year apart (2000 June and 2001 June). The 0.6-10 keV continuum is well describ…
The orbital period of the dipping, bursting, globular cluster X-ray source XB 1746-371 from Rossi X-ray Timing Explorer observations
M. Balucinska-Church, M. J. Church, A. P. Smale
We present results from two long observations of XB 1746-371 by the Rossi X-ray Timing Explorer (RXTE) in 2002 January and May, lasting 4 and 5 days respectively. Dips are observed…
Exploring the complex X-ray spectrum of NGC 4051
K. A. Pounds, J. N. Reeves, A. R. King +1
Archival XMM-Newton data on the nearby Seyfert galaxy NGC 4051, taken in relatively high and low flux states, offer a unique opportunity to explore the complexity of its X-ray spec…
Testing the locality of transport in self-gravitating accretion discs
Giuseppe Lodato, W. K. M. Rice
In this paper we examine the issue of characterizing the transport associated with gravitational instabilities in relatively cold discs, discussing in particular under which condit…
Radio Loud AGN in the Context of the Eigenvector 1 Parameter Space
J. W. Sulentic, S. Zamfir, P. Marziani +3
We consider the properties of radio-loud (RL) AGN in the context of the Eigenvector 1 (E1) parameter space. RL sources show a restricted E1 parameter space occupation relative to t…
Triggered massive-star formation at the border of the HII region Sh 104
L. Deharveng, B. Lefloch, A. Zavagno +4
We present millimetre-line imaging of the Galactic HII region Sh 104. We show that it is surrounded by a ring of molecular gas and dust. Four large molecular condensations are regu…
Meissner Effect and Vortex Dynamics in Quark Stars -- A Model for Soft Gamma-Ray Repeaters
R. Ouyed, O. Elgaroy, H. Dahle +1
We present a new model for soft gamma-ray repeaters based on a quark star born with temperatures above the critical value (T_c) for the onset of the colour-flavor locked supercondu…
XMM-Newton observation of the brightest X-ray flare detected so far from SgrA*
D. Porquet, P. Predehl, B. Aschenbach +5
We report the high S/N observation on October 3, 2002 with XMM-Newton of the brightest X-ray flare detected so far from SgrA* with a duration shorter than one hour (~ 2.7 ks). The…
XMM-Newton and the Pleiades -- I: Bright coronal sources and the X-ray emission from intermediate-type stars
K. R. Briggs, J. P. Pye
We perform X-ray spectral and timing analyses of solar-like (spectral types F5--K8) and intermediate-type (B4--F4) Pleiads observed in a 40-ks XMM-Newton EPIC exposure. All 8 solar…
The Narrow Line Region of Ark 564
Marcella Contini, Alberto Rodriguez-Ardila, Sueli Viegas
The continuum and emission-line spectrum of the narrow-line Seyfert 1 galaxy Ark 564 is used to investigate, for the first time, the physical conditions and structure of its narrow…
Detection of type-2 quasars in the radio galaxies B3 0731+438 and 3C 257
P. M. Derry, P. T. O'Brien, J. N. Reeves +3
We present XMM-Newton observations and spectral fitting of two highly redshift, [OIII]-luminous, narrow-line radio galaxies, B3 0731+438 and 3C 257. Their X-ray continua are well f…
Numerical 3D constraints on convective eddy time-correlations : consequences for stochastic excitation of solar p modes
R. Samadi, A. Nordlund, R. F. Stein +2
A 3D simulation of the upper part of the solar convective zone is used to obtain information on the frequency component, chi_k, of the correlation product of the turbulent velocity…
Zeeman tomography of magnetic white dwarfs: General method and application to EF Eridani
F. Euchner, K. Beuermann, K. Reinsch +3
We have developed a new method to derive the magnetic field distribution on the surfaces of rotating magnetic white dwarfs from phase-resolved flux and circular polarization spectr…
Decline of the space density of quasars between z=2 and z=4
M. Vigotti, R. Carballo, C. R. Benn +5
We define a new complete sample of 13 optically-luminous radio quasars M_AB(1450 Angstrom) < -26.9 mag and log P_1.4 GHz(W/Hz) > 25.7 with redshift 3.8 < z < 4.5, obtained by cross…
Numerical constraints on the model of stochastic excitation of solar-type oscillations
R. Samadi, A. Nordlund, R. F. Stein +2
Analyses of a 3D simulation of the upper layers of a solar convective envelope provide constraints on the physical quantities which enter the theoretical formulation of a stochasti…