EXO0748-676 Currently at Very Low Flux Level

Astronomy and Astrophysics – Astronomy

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X-Ray, Binaries, Neutron Stars

Scientific paper

We regularly monitor the X-ray eclipses of the LMXB source EXO0748-676 with the Rossi X-Ray Timing Explorer (RXTE) Proportional Counter Array (PCA). EXO0748-676 was discovered by the EXOSAT satellite in February 1985 (Parmar et al. 1985, IAUC #4039). The compact object is known to be a neutron star since it shows X-ray bursts (Gottwald et al. 1986, ApJ, v.308, p. 213). Since the beginning of the RXTE mission in 1996 this source has maintained a low but consistent flux (but also with occasional flares) near 8 mcrab in the 2-20 keV energy range.

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