The radio nebula produced by the 27 December 2004 giant flare from SGR 1806-20

Research output: Chapter in Book/Report/Conference proceedingChapter


On 27 December 2004, just the third giant flare was observed from a magnetar, in this case SGR 1806-20. This giant flare was the most energetic of the three, and analysis of a Very Large Array observation of SGR 1806-20 after the giant flare revealed the existence of a new, bright, transient radio source at its position. Follow-up radio observations of this source determined that initially, this source underwent a mildly relativistic one-sided expansion which ceased at the same time as a temporary rebrightening of the radio source. These observational results imply that the radio emission is powered by ∼10 24 g of baryonic material which was ejected off the surface on the neutron star during the giant flare.

Original languageEnglish (US)
Title of host publicationIsolated Neutron Stars
Subtitle of host publicationFrom The Surface To The Interior
PublisherSpringer Netherlands
Number of pages4
ISBN (Print)9781402059971
StatePublished - 2007


  • Pulsars: general
  • Pulsars: individual SGR 1806-20

ASJC Scopus subject areas

  • General Physics and Astronomy


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