BATSE Evidence for GRB Spectral Features

Details BATSE Evidence for GRB Spectral Features BATSE Evidence for GRB Spectral Features

1997-12-05

arxiv.org/abs/astro-ph/9712096v1

Astronomy and Astrophysics

Astrophysics

To appear in Gamma-Ray Bursts: 4th Huntsville Symposium, ed. C. Meegan, R. Preece and T. Koshut

Scientific paper

10.1063/1.55338

We have developed an automatic search procedure to identify low-energy spectral features in GRBs. We have searched 133,000 spectra from 117 bright bursts and have identified 12 candidate features with significances ranging from our threshold of P = 5E-5 to P = 1E-7. Several of the candidates have been examined in detail, including some with data from more than one BATSE spectroscopy detector. The evidence for spectral features appears good; however, the features have not conclusively been shown to be narrow lines.

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