An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence

Details An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence

2007-07-06

arxiv.org/abs/0707.0995v1

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2007.12207.x

We observed the neutron star X-ray transient 2S 1803-245 in quiescence with the X-ray satellite XMM-Newton, but did not detect it. An analysis of the X-ray bursts observed during the 1998 outburst of 2S 1803-245 gives an upper-limit to the distance of <7.3 kpc, leading to an upper-limit on the quiescent 0.5-10 keV X-ray luminosity of <2.8x10^32 erg/s (3sigma). Since the expected orbital period of 2S 1803-245 is several hrs, this limit is not much higher than those observed for the quiescent black hole transients with similar orbital periods.

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