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Article Dans Une Revue The Astrophysical Journal Année : 1998

The Rapid Decay of the Optical Emission from GRB 980326 and Its Possible Implications

R. Smith
  • Fonction : Auteur

Résumé

We report the discovery of the optical counterpart to GRB 980326. Its rapid optical decay can be characterized by a power law with exponent Ϫ and a constant underlying source at. Its optical 2.10 ‫ע‬ 0.13 R ϭ 25.5 ‫ע‬ 0.5 c colors 2.1 days after the burst imply a spectral slope of Ϫ. The gray spectrum as observed with 0.66 ‫ע‬ 0.70 BATSE shows that it is among the 4% softest bursts ever recorded. We argue that the rapid optical decay may be a reason for the nondetection of some low-energy afterglows of GRBs.
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hal-03989197 , version 1 (14-02-2023)

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P. Groot, T. Galama, P. Vreeswijk, R. Wijers, E. Pian, et al.. The Rapid Decay of the Optical Emission from GRB 980326 and Its Possible Implications. The Astrophysical Journal, 1998, 502 (2), pp.L123-L127. ⟨10.1086/311509⟩. ⟨hal-03989197⟩
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