Decomposition of a cosmic gamma-ray burst into two non-correlated radiation components
Open Access
- 15 May 1995
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 274 (2) , 361-368
- https://doi.org/10.1093/mnras/274.2.361
Abstract
The emission of gamma-ray burst GB 881024 is decomposed into two physically distinct non-correlated components by means of a technique called rate–rate diagrams. One of the components dominates at energies below 250 keV and the other one dominates above 250 keV. Time histories and rate/spectrum evolution of the components are considered. The low-energy component manifests clear hardness/rate correlation while the high-energy one does not. The main known types of hardness/rate evolution of gamma-ray bursts are then explained as a result of superposition of components. Possible astrophysical consequences are discussed.Keywords
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