Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-16
Astronomy and Astrophysics
Astrophysics
6 pages, 6 figures, invited talk to the Simbol X International Workshop, The Hard X-ray Universe in Focus, Bologna 14-16 May 2
Scientific paper
The magnetar model involves an isolated neutron star with a very high magnetic field (B~10^14-10^15 G), and is invoked to explain the emission processes of two classes of sources, the Anomalous X-ray Pulsars (AXPs) and the Soft Gamma-Ray Repeaters (SGRs). Five of them have been recently identified to be persistent sources in the hard X-ray band (20-200 keV). AXPs, in particular, present the hardest known persistent spectra in the hard X/soft gamma-ray energy range. The broad band modeling of their spectra still suffers from the non-simultaneity of the observations and from a lack of sensitivity above 20 keV. We present the Simbol X simulated observations of these objects and show that that this mission could surely help to disentangle the contribution of the different spectral components, and to understand how they contribute to the secular flux variations observed in these sources.
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