Low-luminosity grb 060218: A collapsar jet from a neutron star?

Kenji Toma, Kunihito Ioka, Takanori Sakamoto, Takashi Nakamura

Research output: Contribution to conferencePaperpeer-review

Abstract

The gamma-ray burst (GRB) 060218 has ~ 108 times lower luminosity than typical long GRBs, and is associated with a supernova (SN). The radio afterglow displays no jet break, so that this burst might arise from a mildly-relativistic spherical outflow produced by the SN shock sweeping the stellar surface. Since this model is energetically difficult, we propose that the radio afterglow is produced by a non-relativistic phase of an initially collimated outflow (jet). Our jet model is supported by the detection of optical linear polarization in the SN component. We show analytically that the jet can penetrate a progenitor star. A possible engine of a neutron star is also discussed.

Original languageEnglish
Pages74-77
Number of pages4
Publication statusPublished - 2006 Dec 1
Externally publishedYes
Event16th Workshop on General Relativity and Gravitation in Japan, JGRG 2006 - Niigata, Japan
Duration: 2006 Nov 272006 Dec 1

Conference

Conference16th Workshop on General Relativity and Gravitation in Japan, JGRG 2006
CountryJapan
CityNiigata
Period06/11/2706/12/1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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