Our distorted view of magnetars: application of the resonant cyclotron scattering model |
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| Authors: | Nanda Rea Silvia Zane Maxim Lyutikov Roberto Turolla |
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| Institution: | (1) SRON Netherlands Institute for Space Research, Sorbonnelaan, 2, 3584CA Utrecht, The Netherlands;(2) Mullard Space Science Laboratory, University College of London, Holbury St. Mary, Dorking Surrey, RH5 6NT, UK;(3) University of British Columbia, 6224 Agricultural Road, Vancouver, BC, V6T 1Z1, Canada;(4) Physics Department, University of Padua, via Marzolo 8, 35131 Padova, Italy |
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| Abstract: | The X-ray spectra of the magnetar candidates are customarily fitted with an empirical, two component model: an absorbed blackbody
and a power-law. However, the physical interpretation of these two spectral components is rarely discussed. It has been recently
proposed that the presence of a hot plasma in the magnetosphere of highly magnetized neutron stars might distort, through
efficient resonant cyclotron scattering, the thermal emission from the neutron star surface, resulting in production of non-thermal
spectra. Here we discuss the Resonant Cyclotron Scattering (RCS) model, and present its XSPEC implementation, as well as preliminary
results of its application to Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters.
N.R. is supported by an NWO Post-Doctoral Fellowship. S.Z. thanks the Particle Physics and Astronomy Research Council, PPARC,
for support through an Advanced Fellowship. |
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| Keywords: | Neutron stars Pulsars Magnetars X-ray Resonant cyclotron scattering |
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