ROSAT observations of the LMC Be/X-ray binary EXO 0531.1-6609: the long-term variability.

Details ROSAT observations of the LMC Be/X-ray binary EXO 0531.1-6609: the long-term variability. ROSAT observations of the LMC Be/X-ray binary EXO 0531.1-6609: the long-term variability.

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...302l...1h&link_type=abstract

Astronomy and Astrophysics, v.302, p.L1

Astronomy and Astrophysics

Astrophysics

14

Stars: Binaries, Stars: Neutron, Stars: Emission-Line, Be, Stars: Individual: Exo 0531.1-6609, X-Rays: Stars

Scientific paper

The Be/X-ray binary EXO 0531.1-6609 was in the field of view of 40 pointed ROSAT PSPC observations distributed over 4 years. Most of the observations yielded upper limits below 0.02counts/s consistent with several detections at this low-intensity level. A strong outburst lasting for more than two months was seen from March to May 1993. With a maximum observed intensity of 0.5counts/s the brightness of the outburst is comparable to that seen in 1983 by EXOSAT. The PSPC energy spectrum is consistent with a power law with photon index 1.5 as typically observed from this class of X-ray binaries.

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