ASCA observation of November 19 1978 gamma ray burst error box

Details ASCA observation of November 19 1978 gamma ray burst error box ASCA observation of November 19 1978 gamma ray burst error box

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..366..176l&link_type=abstract

High velocity neutron stars and gamma-ray bursts. AIP Conference Proceedings, Volume 366, pp. 176-181 (1996).

Computer Science

1

Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray, Neutron Stars

Scientific paper

We have used ASCA to observe the error box of the well known burst source GRB 781119 whose source was thought to be a compact object. In a 17 ksec observation, we did not identify any x-ray source within the GRB error box. Using the observed counting rate and assuming blackbody radiation, a 3σ upper limit may be estimated to be 2.2×10-13 erg cm-2 s-1. This is probably not inconsistent with the results of previous Einstein and EXOSAT observations, and is two orders of magnitude more sensitive that in previous searches for GRB x-ray counterparts in the 5-10 keV energy range. The expected flux from a neutron star radiating as a blackbody radiation is calculated. We find that if GRB 781119 is associated with a neutron star, its temperature needs to be low (<106 K) and/or its distance must be at least several kpc, in order to be consistent with our ASCA observation.

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