Two Classes of Gamma-Ray Bursts

Data from the 3B Catalogue suggest that short and long GRB are the results of different classes of events, rather than different parameter values within a single class: Short bursts have harder spectra in the BATSE bands, but chiefly long bursts are detected at photon energies over 1 MeV, implying t...

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Bibliographic Details
Published in:arXiv.org 1995-12
Main Authors: Katz, J I, Canel, L M
Format: Article
Language:English
Subjects:
Gamma ray bursts
Gamma rays
Photons
Online Access:Get full text
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Summary:Data from the 3B Catalogue suggest that short and long GRB are the results of different classes of events, rather than different parameter values within a single class: Short bursts have harder spectra in the BATSE bands, but chiefly long bursts are detected at photon energies over 1 MeV, implying that their hard photons are radiated by a process not found in short bursts. The values of \langle V/V_{max} \rangle for short and long bursts differ by 4.3 \sigma, implying different spatial distributions. Only the soft gamma-ray radiation mechanisms are the same in both classes.
ISSN:2331-8422