A search for spectral lines in gamma-ray bursts using TGRS
- NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)
- University of California Space Sciences Lab., Berkeley, California 94720 (United States)
- Lawrence Berkeley Laboratory, Berkeley, California 94702 (United States)
We present the results of an ongoing search for narrow spectral lines in gamma-ray burst data. TGRS, the Transient Gamma-Ray Spectrometer aboard the Wind satellite is a high energy-resolution Ge device. Thus it is uniquely situated among the array of space-based, burst sensitive instruments to look for line features in gamma-ray burst spectra. Our search strategy adopts a two tiered approach. An automated 'quick look' scan searches spectra for statistically significant deviations from the continuum. We analyzed all possible time accumulations of spectra as well as individual spectra for each burst. Follow-up analysis of potential line candidates uses model fitting with F-test and {chi}{sup 2} tests for statistical significance.
- OSTI ID:
- 21185792
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 428; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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