9 papers · 1 filter
GX 301-2 as seen by Integral
I. Kreykenbohm, K. Pottschmidt, P. Kretschmar +9
We present observations of the High Mass X-ray Binary GX 301-2 taken during the Galactic Plane Scan (GPS) with Integral following our RXTE observations (Kreykenbohm et al. 2004). T…
XMM-Newton Observations of the Be/X-ray transient A0538-66 in quiescence
P. Kretschmar, J. Wilms, R. Staubert +2
We present XMM-Newton observations of the recurrent Be/X-ray transient A0538-66, situated in the Large Magellanic Cloud, in the quiescent state. Despite a very low luminosity state…
A Her X-1 Turn-On: Using the pulse profile to probe the outer edge of an accretion disk
M. Kuster, J. Wilms, R. Staubert +5
The X-ray binary pulsar Her X-1 shows a wide variety of long and short term variabilities in the X-ray light curve. The 35 d variability of the source is interpreted as the influen…
The Spectrum and Accurate Location of GRS 1758-258
W. A. Heindl, D. M. Smith
We observed the "micro-quasar" GRS 1758-258 four times with Chandra. Two HRC-I observations were made in 2000 September-October spanning an intermediate-to-hard spectral transition…
Studies of Hard X-ray Tails in Z sources with RXTE/HEXTE
F. D'Amico, W. A. Heindl, R. E. Rothschild +1
We report RXTE results of spectral analyses of three (Sco X-1, GX 349+2, and Cyg X-2) out of the 6 known Z sources, with emphasis in the hard X-ray emission. No hard X-ray tails we…
HEXTE Detections of Hard X-Ray Tails in Sco X-1
F. D'Amico, W. A. Heindl, R. E. Rothschild +1
We report the detection of a non-thermal hard X-ray component from Sco X-1 based upon the analysis of 20-220 keV spectra obtained with the HEXTE experiment on-board the RXTE satell…