Hard X-Ray Transient
Abstract
W. S. Paciesas and M. S. Briggs, University of Alabama, Huntsville; B. A. Harmon and R. B. Wilson, Marshall Space Flight Center, NASA; and M. H. Finger, Computer Sciences Corporation, report for the BATSE team: "We have detected a strong transient hard x-ray source in data from the BATSE instrument on the Compton Gamma Ray Observatory. The location is estimated to be at R.A. = 4h.4, Decl. = +32 (equinox 2000.0), with an error radius of about 1.5 deg. The source was first detected at an intensity of about 0.2 Crab (20-300 keV) on Aug. 5. By the end of Aug. 8, the flux had reached about 3 Crab and was still increasing. The spectrum is fairly hard (power- law number index about 2), with significant flux out to at least 300 keV. Although the intensity shows strong variability on short timescales, no periodicity is evident. Follow-up observations are encouraged."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- August 1992
- Bibcode:
- 1992IAUC.5580....1P