The broad band spectral properties of binary X-ray pulsars

Details The broad band spectral properties of binary X-ray pulsars The broad band spectral properties of binary X-ray pulsars

1999-06-04

arxiv.org/abs/astro-ph/9906086v1

Astronomy and Astrophysics

Astrophysics

10 Latex pages, 4 figures, uses psfig.sty. Accepted for publication in Advances in Space Research, in Proceedings of 32nd Scie

Scientific paper

10.1016/S0273-1177(99)00767-X

The X-ray telescopes on board BeppoSAX are an optimal set of instruments to observe bright galactic binary pulsars. These sources emit very hard and quite complex X-ray spectra that can be accurately measured with BeppoSAX between 0.1 and 200 keV. A prototype of this complexity, the source Her X-1, shows at least seven different components in its spectrum. A broad band measure is therefore of paramount importance to have a thorough insight into the physics of the emitting region. Moreover the detection of cyclotron features, when present, allows a direct and highly significant measure of the magnetic field intensity in the emission region. In this paper we briefly report the results obtained with BeppoSAX on this class of sources, with emphasis on the detection and on the measured properties of the cyclotron lines.

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