Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-02-27
PoS Integral08:102,2008
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
12 pages, 4 figures, presented at the 7th INTEGRAL Workshop "An INTEGRAL View of Compact Objects", 8-11 September 2008, to be
Scientific paper
We present a systematic fit of a model of resonant cyclotron scattering (RCS) to the X and soft gamma-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.
Gotz Diego
Lyutikov Maxim
Rea Nanda
Turolla Roberto
Zane Silvia
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