Waiting for the Big One: A New Class of SGR Outbursts?

Details Waiting for the Big One: A New Class of SGR Outbursts? Waiting for the Big One: A New Class of SGR Outbursts?

2002-04-30

arxiv.org/abs/astro-ph/0204512v1

Mon.Not.Roy.Astron.Soc. 335 (2003) 883

Astronomy and Astrophysics

Astrophysics

to appear in M.N.R.A.S

Scientific paper

10.1046/j.1365-8711.2002.05571.x

It is suggested that magnetars eventually become unstable to a dynamic overturning instability that destroys most of their dipole moment in a single event. It is further suggested that such an instability would produce a supergiant version of the largest soft gamma ray bursts that have thus far been observed, and that they could be observed out to tens or even $10^2$ Mpc. Persistent emission and afterglows from the fireball might confirm positive identification with nearby galaxies and perhaps provide other distinguishing features as well.

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