5 papers · 1 filter
High-Energy Observations of the Binary Millisecond Pulsar PSR J0218+4232
L. Kuiper, W. Hermsen, F. Verbunt +2
We report the detection of pulsed X-ray emission () from the binary millisecond pulsar PSR J0218+4232 in a 100 ks ROSAT HRI observation. The pulse profile shows a sharp main…
The 1998 outburst of the X-ray transient 4U 1630-47 observed with BeppoSAX
T. Oosterbroek, A. N. Parmar, E. Kuulkers +4
We report results of five pointed BeppoSAX observations of the black hole candidate 4U 1630-47 during part of its 1998 outburst when the 2-10 keV source luminosity decreased from 2…
X rays from old open clusters: M 67 and NGC 188
T. Belloni, F. Verbunt, R. D. Mathieu
We have observed the old open clusters M 67 and NGC 188 with the ROSAT PSPC. In M 67 we detect a variety of X-ray sources. The X-ray emission by a cataclysmic variable, a single ho…
The X-ray emission of the polar BL Hydri
G. Matt, R. Barcaroli, T. Belloni +8
We report on the analysis of the ASCA and BeppoSAX X-ray observations of the polar system BL Hyi. Emission from both poles is apparent in both observations; the emission from the s…
BeppoSAX observations of the long period polar system V1309 Ori
D. de Martino, R. Barcaroli, G. Matt +8
We present BeppoSAX observations of the peculiar long period polar system V1309 Ori (RXJ0515.6+0105). The source was detected simultaneously at soft and, for the first time, at har…