Observations of the cosmic gamma-ray burst by the WATCH instrument of the GRANAT observatory on July 23, 1992

Details Observations of the cosmic gamma-ray burst by the WATCH instrument of the GRANAT observatory on July 23, 1992 Observations of the cosmic gamma-ray burst by the WATCH instrument of the GRANAT observatory on July 23, 1992

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993astl...19..276t&link_type=abstract

Astronomy Letters, Vol. 19, p. 276-279; Pis'ma v Astronomicheskij Zhurnal (ISSN 0320-0108), vol. 19, no. 8, p. 686-692. In Russ

Astronomy and Astrophysics

Astronomy

5

Energy Spectra, Gamma Ray Bursts, Light Curve, Position (Location), Black Body Radiation, X Ray Astronomy

Scientific paper

The study presents data of the Russo-Danish WATCH experiment to localize the source of the gamma-ray burst detected on July 23, 1992, the brightness curve at various energy ranges, and the hardness evolution of the burst radiation. It is shown that the source of the gamma-ray burst emits a damping X-ray flux with a characteristic temperature of the order of about 5 keV during over 40 s from the end of the burst in hard X-rays. The upper limits on the source's X-ray luminosity in the 8-20 keV energy range in its quiescent state before and after the outburst are presented. It is shown that the luminosity of the quiescent source at the location of the burst does not exceed 20 mCrab during at least several days before and after the GRB event.

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