Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-12-16
Astronomy and Astrophysics
Astrophysics
To appear in the proceedings of the 2003 GRB Conference, Santa Fe, 4 pages, 4 figures
Scientific paper
10.1063/1.1810801
Magnetars are modelled as sources that derive their output from magnetic energy that substantially exceeds their rotational energy. An implication of the recent polarization measurement of GRB 021206 is that the emission mechanism may be dominated by a magnetic field that originates in the central engine. Similarities in the temporal properties of SGRs and GRBs are considered in light of the fact that the central engine in GRBs may be magnetically dominated. The results show that 1) the time intervals between outbursts in SRG 1806-20 and pulses in GRBs are consistent with lognormal distributions and 2) the cumulative outputs of SGRs and GRBs increase linearly with time. This behaviour can be successfully modelled by a relaxation system that maintains a steady state situation.
Conway Mark
French James
Hanlon Lorraine
McBreen Brian
McBreen Sheila
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