The orbital X-ray light curve of GX301-2

Details The orbital X-ray light curve of GX301-2 The orbital X-ray light curve of GX301-2

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2505l&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

Scientific paper

GX301-2 is an x-ray pulsar in an eccentric orbit (e=0.47) with a massive early-type stellar companion. The neutron star accretes from the stellar wind and exhibits regular flares approximately 1.4 days prior to periastron passage. Longterm continuous x-ray monitoring of GX301-2 by the RXTE/ All-Sky-Monitor has now been carried out for a period of 5 years. These data now comprise the best observations of the orbital x-ray light curve. The main flux peak just prior to periastron is clearly seen, as well as a secondary broad peak near apastron. CGRO/ BATSE observations have provided new improved orbital parameters. Modeling of GX301-2 orbital light curve, using the new orbital parameters, and including the stellar wind, is carried out.

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