BATSE observations of gamma-ray burst spectral diversity

Authors

D. Band, University of California, San Diego
J. Matteson, University of California, San Diego
L. Ford, University of California, San Diego
B. Schaefer, NASA Goddard Space Flight Center
D. Palmer, NASA Goddard Space Flight Center
B. Teegarden, NASA Goddard Space Flight Center
T. Cline, NASA Goddard Space Flight Center
G. Fishman, NASA Marshall Space Flight Center
C. Meegan, NASA Marshall Space Flight Center
R. Wilson, NASA Marshall Space Flight Center
W. Paciesas, The University of Alabama in Huntsville
G. Pendleton, The University of Alabama in Huntsville
P. Lestrade, Mississippi State University

Document Type

Conference Proceeding

Publication Date

1-1-1993

Abstract

The spectra of 58 bursts observed by the BATSE Spectroscopy Detectors were fit satisfactorily from less than 30 keV to more than an MeV by a 4 parameter model consisting of two power laws with a smooth transition. We find that a distribution of spectral indices is required instead of the low energy E -1 dependence found in previous work. The break energy ranges from less than 100 keV to more than an MeV, peaking below 200 keV ; this suggests that the break is not Lied directly to pair processes in all bursts. We did not find any conclusive correlations among the spectral parameters; our sample is probably inappropriate for the correlations predicted by the cosmological models.

Publication Source (Journal or Book title)

AIP Conference Proceedings

First Page

872

Last Page

876

Recommended Citation

Band, D., Matteson, J., Ford, L., Schaefer, B., Palmer, D., Teegarden, B., Cline, T., Fishman, G., Meegan, C., Wilson, R., Paciesas, W., Pendleton, G., & Lestrade, P. (1993). BATSE observations of gamma-ray burst spectral diversity. AIP Conference Proceedings, 280, 872-876. https://doi.org/10.1063/1.44238