| Issue |
A&A
Volume 386, Number 2, May I 2002
|
|
|---|---|---|
| Page(s) | 531 - 534 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20020223 | |
| Published online | 15 May 2002 | |
XMM-Newton observation of the bursting pulsar GRO J1744-28 in quiescence
1
CEA/DSM/DAPNIA, Service d'Astrophysique, C.E. Saclay, 91191 Gif-sur-Yvette Cedex, France
2
Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
Corresponding author: F. Daigne, daigne@discovery.saclay.cea.fr
Received:
12
December
2001
Accepted:
11
February
2002
The XMM-Newton X-ray observatory performed a pointed observation of the bursting pulsar GRO J1744-28 in April 2001 for about 10 ks during a program devoted to the scan of the Galactic center region. After the discovery of this source by BATSE in December 1995 during a very active bursting phase, it has been in quiescence since April 1997. We present here the first detection of GRO J1744-28 in its quiescent state at a position which is consistent with previous high-energy positions (but not consistent with a proposed IR counterpart). The observed luminosity of the source in quiescence is about 6 orders of magnitude weaker than the luminosity in outburst.
Key words: pulsars: individual: GRO J1744-28 / stars: neutron / X-rays: bursts
© ESO, 2002
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