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11 papers · 2 filters
General-relativistic monopole magnetosphere of neutron stars: a pseudo-spectral discontinuous Galerkin approach
J. Pétri
The close vicinity of neutron stars remains poorly constrained by observations. Although plenty of data are available for the peculiar class of pulsars we are still unable to deduc…
The X-ray Flux Distribution of Sagittarius A* as Seen by Chandra
J. Neilsen, S. Markoff, M. A. Nowak +11
We present a statistical analysis of the X-ray flux distribution of Sgr A* from the Chandra X-ray Observatory's 3 Ms Sgr A* X-ray Visionary Project (XVP) in 2012. Our analysis indi…
Effect of geodetic precession on the evolution of pulsar high-energy pulse profiles as derived with the striped-wind model
J. Petri
Geodetic precession has been observed directly in the double-pulsar system PSR J0737-3039. Its rate has even been measured and agrees with predictions of general relativity. Very r…
A mass of less than 15 solar masses for the black hole in an ultraluminous X-ray source
C. Motch, M. W. Pakull, R. Soria +2
Most ultraluminous X-ray sources (ULXs) display a typical set of properties not seen in Galactic stellar-mass black holes (BHs): higher luminosity Lx > 3 10^39 erg/s, unusually sof…
NGC 1365: A low column density state unveiling a low ionization disk wind
V. Braito, J. N. Reeves, J. Gofford +3
We present the time-resolved spectral analysis of the XMM-Newton data of NGC 1365, collected during one XMM-Newton observation, which caught this "changing-look" AGN in a high flux…
Study of the X-ray activity of Sgr A* during the 2011 XMM-Newton campaign
Enmanuelle Mossoux, Nicolas Grosso, Frédéric H. Vincent +1
In Spring 2011 we observed Sgr A*, the supermassive black hole at the center of our Galaxy, with XMM-Newton with a total exposure of ~226 ks in coordination with the 1.3 mm VLBI. W…