Size of a gamma-ray burster optical emitting region

Details Size of a gamma-ray burster optical emitting region Size of a gamma-ray burster optical emitting region

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.302...43s&link_type=abstract

Nature, vol. 302, Mar. 3, 1983, p. 43-45.

Astronomy and Astrophysics

Astronomy

20

Astronomical Photometry, Gamma Ray Bursts, Light Emission, Optical Emission Spectroscopy, Neutron Stars, Photographic Plates

Scientific paper

Measured limits on the quiescent optical and IR flux of the Nov. 19, 1978 gamma ray burster event are presented and used to establish a lower limit to the size of the optically emitting region. A total of 305 min of exposure was made, using a CCD with a UV cutoff at 3800 A. It was determined that the size of the optical emitting region is more than an order of magnitude larger than a neutron star. The size of the optical emitting region did not, however, coincide with that of the gamma ray emitting region, indicating that the optical emissions originate from a different area of the region, i.e., from a companion star or accretion disk rather than a neutron star.

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