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The Synchrotron Shock Model Confronts a "Line of Death" in the BATSE Gamma-Ray Burst DataThe synchrotron shock model (SSM) for gamma-ray burst emission makes a testable prediction: that the observed low-energy power-law photon number spectral index cannot exceed -2/3 (where the photon model is defined with a positive index: $dN/dE \propto E{alpha}$). We have collected time-resolved spectral fit parameters for over 100 bright bursts observed by the Burst And Transient Source Experiment on board the {\it Compton Gamma Ray Observatory}. Using this database, we find 23 bursts in which the spectral index limit of the SSM is violated, We discuss elements of the analysis methodology that affect the robustness of this result, as well as some of the escape hatches left for the SSM by theory.
Document ID
19990076657
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Preece, Robert D.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Briggs, Michael S.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Mallozzi, Robert S.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Pendleton, Geoffrey N.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Paciesas, W. S.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Band, David L.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Subject Category
Space Radiation
Distribution Limits
Public
Copyright
Other

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