Observations of the X-ray pulsar VELA X-1 with the Pulsar X-2 instrument on board the Gamma Module

Details Observations of the X-ray pulsar VELA X-1 with the Pulsar X-2 instrument on board the Gamma Module Observations of the X-ray pulsar VELA X-1 with the Pulsar X-2 instrument on board the Gamma Module

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sval...18..231l&link_type=abstract

Soviet Astronomy Letters, Vol. 18, p. 231; Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 18, no. 7, July 1992, p. 579

Astronomy and Astrophysics

Astronomy

2

Pulsars, Stellar Rotation, X Ray Astronomy, X Ray Stars, Gamma Ray Telescopes, Light Curve, Spaceborne Telescopes

Scientific paper

The continuation of the decelerating rotation of the X-ray pulsar Vela X-1 was observed, and a period value of 283.24 (87 +/- 31) s was found for JD 22448368.657448. An analysis is presented of data obtained during three days of observation (beginning on April 22, 1991) for 12 orbits with the brightest light curves and with durations of about 20 min. The mean profiles of the pulsar's pulses are presented in four energy ranges.

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