A search for spectral lines in gamma-ray bursts using TGRS

Details A search for spectral lines in gamma-ray bursts using TGRS A search for spectral lines in gamma-ray bursts using TGRS

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..428..324k&link_type=abstract

Fourth Huntsville gamma-ray burst symposium. AIP Conference Proceedings, Volume 428, pp. 324-328 (1998).

Physics

Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray, Spectroscopy And Spectrophotometry, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

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 χ2 tests for statistical significance.

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