Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...486..938s&link_type=abstract
Astrophysical Journal v.486, p.938
Astronomy and Astrophysics
Astronomy
4
Gamma Rays: Bursts, Stars: Individual Alphanumeric: Grb 930131, X-Rays: Stars
Scientific paper
The classical gamma-ray burst of 1993 January 31 (GRB 930131) is the highest peak flux burst ever recorded with CGRO/BATSE. It was also observed by other satellites. Its position was determined to within a narrow annulus by the Third Interplanetary Network (IPN). We searched for an X-ray counterpart to this bright burst with ASCA on 1996 January 9, and detected one X-ray source in the IPN annulus. Its position coincides with an X-ray source found with ROSAT, which had been identified with the normal F-type star HR 4657. The flux and spectrum obtained with ASCA are consistent with those for an F-type star, and we confirm that the detected X-ray emission comes from HR 4657. Although this source is in the IPN annulus, the high chance probability of finding an X-ray source in the annulus does not justify the association of it with GRB 930131. We discuss whether or not this X-ray source is associated with GRB 930131.
Hurley Kevein
Kawai Nobuyuki
Murakami Tadayoshi
Otani Chico
Shibata Ryo
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