Discovery and Early X-Ray Lightcurve of the Transient GRS:1124-68 Nova MUSCAE 1991

Details Discovery and Early X-Ray Lightcurve of the Transient GRS:1124-68 Nova MUSCAE 1991 Discovery and Early X-Ray Lightcurve of the Transient GRS:1124-68 Nova MUSCAE 1991

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...254l..39b&link_type=abstract

Astronomy and Astrophysics, Vol.254, NO. FEB(I), P. L39, 1992

Astronomy and Astrophysics

Astrophysics

15

X-Rays: Binaries, Black Holes, Stars: Neutron, Stars: Novae

Scientific paper

The X-ray transient GRS 1124-68 was discovered by the all-sky X-ray monitor Watch onboard the Soviet satellite GRANAT on January 8A 1991. The 6-15 keV intensity was observed to increase from Jan 8 to Jan 13 reaching a peak flux of 2.2 Crab. Thereafter, the intensity declined reaching a minimum level on Jan 18. A second outburst was observed on Jan 24. A position derived from the Watch data initiated a search which lead eventually to the discovery of the optical counterpart on Jan 13. In spite of the similarity of this outburst to previous X-ray novae such as A 0620-00, further observations will be necessary to determine whether the compact object associated with GRS 1124-68 is a neutron star or a black hole.

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