Further GINGA observations of the new X-ray pulsar X1722-36

Details Further GINGA observations of the new X-ray pulsar X1722-36 Further GINGA observations of the new X-ray pulsar X1722-36

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42..287t&link_type=abstract

Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 2, 1990, p. 287-293.

Astronomy and Astrophysics

Astronomy

8

B Stars, Binary Stars, Ginga Satellite, Pulsars, X Ray Binaries, Spaceborne Astronomy, Stellar Flares, X Ray Astronomy, X Ray Spectra

Scientific paper

The results of a follow-up study of X1722-36, a new 413-s X-ray pulsar recently discovered with Ginga are reported. The new Ginga observations reveal X-ray flaring activity on time scales down to a few hours and a very heavily absorbed X-ray spectrum (N/H/ about 10 to the 23rd H/sq cm). The pulse profile is roughly sinusoidal and shows no significant energy dependence. From a pulse timing analysis, the lower limits are set on the orbital period of the system and the mass of the primary star at 9 d and 15 solar masses, respectively.

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