The continuum spectral characteristics of gamma-ray bursts observed by BATSE

Details The continuum spectral characteristics of gamma-ray bursts observed by BATSE The continuum spectral characteristics of gamma-ray bursts observed by BATSE

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431..416p&link_type=abstract

The Astrophysical Journal, Part 1, vol. 431, no. 1, P. 416-424

Astronomy and Astrophysics

Astrophysics

18

Continuous Spectra, Gamma Ray Bursts, Gamma Ray Spectra, Photons, Sky Surveys (Astronomy), Astrophysics, Fluence, Gamma Ray Astronomy, Spatial Distribution, Spectrum Analysis

Scientific paper

Distributions of the continuum spectral characteristics of 260 bursts in the first Burst And Transient Source Experiement (BATSE) catalog are presented. The data are derived from flux calculated from BATSE Large Area Detector (LAD) four-channel discriminator data. The data are converted from counts to protons using a direct spectral inversion technique to remove the effects of atmospheric scattering and the energy dependence of the detector angular response. Although there are intriguing clusters of bursts in the spectral hardness ratio distributions, no evidence for the presence of distinct burst classes based in spectral hardness ratios alone is found. All subsets of bursts selected for their spectral characteristics in this analysis exhibit spatial distributions consistent with isotropy. The spectral diversity of the burst population appears to be caused largely by the highly variable nature of the burst production mechanisms themselves.

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