Polarization of gamma-ray bursts via scattering off a relativistic sheath

David Eichler, Amir Levinson

Research output: Contribution to journalArticlepeer-review

Abstract

Gamma-ray burst fireballs could be ensheathed by a relativistic, baryon-enriched outflow that would in selected directions scatter a polarized beam of gamma rays. The strong polarization recently announced by RHESSI is attainable by the scattering mechanism, although not most of the time. The scattering mechanism, when acting in addition to the synchrotron mechanism, could circumvent some of the predictions implied by a purely synchrotron origin for the polarization. The time profile of the scattered component could differ from that of the primary gamma rays.

Original languageEnglish
Pages (from-to)L147-L150
JournalAstrophysical Journal
Volume596
Issue number2 II
DOIs
StatePublished - 20 Oct 2003

Keywords

  • Black hole physics
  • Gamma rays: bursts
  • Gamma rays: theory

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