Physical constraints on models of gamma-ray bursters

  • Richard I. Epstein
6. X-Ray and Gamma-Ray Bursters
Part of the Lecture Notes in Physics book series (LNP, volume 255)


The power per logarithmic bandwidth in gamma-ray burst spectra generally increases rapidly with energy through the x-ray range and does not cut off sharply above a few MeV. This spectral form indicates that a very small fraction of the energy from a gamma-ray burst source is emitted at low energies or is reprocessed into x-rays and that the high-energy gamma rays are not destroyed by photon-photon interactions. The implications are that the emission mechanism for the gamma-ray bursts is not synchrotron radiation from electrons that lose most of their energy before being re-accelerated and that either the regions from which the gamma rays are emitted are large compared to the size of a neutron star or the emission is collimated and beamed away from the stellar surface.


Neutron Star High Energy Photon Stellar Surface Neutron Star Surface Cyclotron Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Richard I. Epstein
    • 1
  1. 1.Space Astronomy and AstrophysicsLos Alamos National LaboratoryLos Alamos

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