Gamma-ray burst afterglow with continuous energy injection: Signature of a highly magnetized millisecond pulsar

Bing Zhang, Peter Mészáros

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410 Scopus citations

Abstract

We investigate the consequences of a continuously injecting central engine on the gamma-ray burst afterglow emission, focusing more specifically on a highly magnetized millisecond pulsar engine. For initial pulsar parameters within a certain region of the parameter space, the afterglow light curves are predicted to show a distinctive achromatic bump feature, the onset and duration of which range from minutes to months, depending on the pulsar and the fireball parameters. The detection of, or upper limits on, such features would provide constraints on the burst progenitor and on magnetar-like central engine models. An achromatic bump such as that in the GRB 000301C afterglow may be caused by a millisecond pulsar with P0 = 3.4 ms and Bp, = 2.7 × 1014 G.

Original languageEnglish (US)
Pages (from-to)L35-L38
JournalAstrophysical Journal
Volume552
Issue number1 PART 2
DOIs
StatePublished - May 1 2001

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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