e± pair cascades and precursors in gamma-ray bursts

P. Mészáros, E. Ramirez-Ruiz, M. J. Rees

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


Gamma-ray burst sources with a high luminosity can produce electron-positron pair cascades in their environment as a result of backscattering of a seed fraction of their original hard spectrum. The resulting spectral modifications offer the possibility of diagnosing not only the compactness parameter of the gamma-ray-emitting region but also the baryonic density of the environment external to the burst.

Original languageEnglish (US)
Pages (from-to)660-666
Number of pages7
JournalAstrophysical Journal
Issue number2 PART 1
StatePublished - Jun 20 2001

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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