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 {ital 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 {open_quote}quick look{close_quote} 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. {copyright} {ital 1998 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 641442
- Report Number(s):
- CONF-9709153--
- 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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