English

Radio Emission from Magnetars

Astrophysics 2009-11-07 v1

Abstract

We discuss properties of the expected radio emission from Soft Gamma-ray Repeaters (SGRs) during their bursting activity in the framework of the model of Thompson, Lyutikov and Kulkarni (2002), in which the high energy emission is powered by the dissipation of super-strong magnetic fields in the magnetospheres through reconnection-type events. Drawing on analogies with Solar flares we predict that coherent radio emission resembling solar type-III radio bursts may be emitted in SGRs during X-ray bursts. The radio emission should have correlated pulse profiles with X-rays, narrow-band-type radio spectrum with Δνν\Delta \nu \leq \nu with the typical frequency ν1 \nu \geq 1 GHz, and, possibly, a drifting central frequency. We encourage sensitive radio observations of SGRs during the bursting activity.

Keywords

Cite

@article{arxiv.astro-ph/0206439,
  title  = {Radio Emission from Magnetars},
  author = {Maxim Lyutikov},
  journal= {arXiv preprint arXiv:astro-ph/0206439},
  year   = {2009}
}

Comments

5 pages, submitted to ApJ Lett