XMM-Newton observation of the bursting pulsar GRO J1744-28 in quiescence
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, firstname.lastname@example.org
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