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Modelling magnetars' high energy emission through resonant cyclotron scattering

Götz, D; Rea, N; Zane, S; Turolla, R; Lyutikov, M; (2008) Modelling magnetars' high energy emission through resonant cyclotron scattering. In:

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Abstract

We present a systematic fit of a model of resonant cyclotron scattering (RCS) to the X and soft γ-ray data of four magnetars, including anomalous X-ray pulsars, and soft gamma repeaters. In this scenario, non-thermal magnetar spectra in the soft X-rays result from resonant cyclotron scattering of the thermal surface emission by hot magnetospheric plasma. We find that this model can successfully account for the soft X-ray emission of magnetars, while an additional component is still required to model the hard X-ray persistent magnetar emission recently discovered by INTEGRAL. The latter is an important component in terms of magnetars' luminosity, and cannot be neglected when modelling the soft X-ray part of the spectrum.

Type: Proceedings paper
Title: Modelling magnetars' high energy emission through resonant cyclotron scattering
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/178006
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