Magnetic Tower Model for Long Gamma-Ray Bursts

Details Magnetic Tower Model for Long Gamma-Ray Bursts Magnetic Tower Model for Long Gamma-Ray Bursts

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.1906u&link_type=abstract

American Astronomical Society Meeting 207, #19.06; Bulletin of the American Astronomical Society, Vol. 37, p.1188

Astronomy and Astrophysics

Astronomy

Scientific paper

We propose a magnetic mechanism for the propagation of a strongly collimated outflow through a collapsing massive star as an explanation for long-duration gamma-ray bursts within the collapsar model. The mechanism is based on Lynden-Bell's magnetic tower model, modified to include the strong hydrodynamic shock that is driven into the star by the growing magnetic tower, as well as the hot gas cocoon between the tower and the shock. The cocoon provides the pressure that collimates the magnetic tower into a narrow jet. The channel cleared by the expanding tower is plausibly free of baryons and thus allows the clean escape of magnetic energy from the central engine through the star.

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