Orbit determination for the Be/X-ray transient EXO 2030+375

Details Orbit determination for the Be/X-ray transient EXO 2030+375 Orbit determination for the Be/X-ray transient EXO 2030+375

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410..803s&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 803-807 (1997).

Computer Science

Pulsars, X-Ray Binaries, X-Ray, Proper Motions And Radial Velocities, Space Motions

Scientific paper

The Be/X-ray binary transient pulsar EXO 2030+375 has been observed during twenty-two outbursts over four years (1991-1994) using the large area detectors (LADs) of the Burst and Transient Source Experiment (BATSE) on the Compton Gamma-Ray Observatory (CGRO). Thirteen outbursts between 1992 February and 1993 August occurred regularly at ~46 day intervals, close to the orbital period determined using EXOSAT data (Parmar et al. 1989). EXOSAT discovered this pulsar during a ``giant'' outburst in 1985 May (Parmar et al. 1985). All BATSE outbursts were ``normal'' type. Pulse phases derived from the thirteen consecutive outbursts were fit to two different models to determine a binary orbit. A summary of the results are presented here.

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