Curvature-drift instability fails to generate pulsar radio emission

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10 Scopus citations

Abstract

The curvature-drift instability has long been considered as a viable mechanism for pulsar radio emission. We reconsidered this mechanism by finding an explicit solution describing the propagation of short electromagnetic waves in a plasma flow along curved magnetic field lines.We show that even though the waves could be amplified, the amplification factor remains very close to unity; therefore, this mechanism is unable to generate high brightness temperature emission from initial weak fluctuations.

Original languageEnglish
Pages (from-to)1164-1173
Number of pages10
JournalAstrophysical Journal
Volume721
Issue number2
DOIs
StatePublished - 1 Oct 2010

Keywords

  • Instabilities
  • Plasmas
  • Pulsars: general
  • Radiation mechanisms: non-thermal
  • Waves

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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