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XMM-Newton observation of the bursting pulsar GRO J1744-28 in quiescence

F. Daigne·P. Goldoni·P. Ferrando·A. Goldwurm·A. Decourchelle·R. S. Warwick
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Abstract

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.

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F. Daigne, P. Goldoni, P. Ferrando, A. Goldwurm, A. Decourchelle, R. S. Warwick. 2002-02-11. XMM-Newton observation of the bursting pulsar GRO J1744-28 in quiescence. https://doi.org/10.1051/0004-6361%3A20020223

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