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Cyclotron features in X-ray spectra of accreting pulsars |
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| Authors: | W Coburn P Kretschmar I Kreykenbohm VA McBride RE Rothschild R Staubert J Wilms |
| Institution: | aBerkeley Space Sciences Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720-7450, USA bINTEGRAL Science Data Centre, 16 Chemin d’Ecogia, CH-1290 Versoix, Switzerland cSchool of Physics and Astronomy, Southampton University, Highfield, Southampton S017 1BJ, England dCenter for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0424, USA eSand 1, D-72076, Tübingen, Germany fDepartment of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom |
| Abstract: | The hard X-ray spectra of small subset of accreting pulsars show absorption-like line features in the range 10–100 keV. These lines, referred to as cyclotron lines or cyclotron resonance scattering features, are due to photons scattered out of the line of sight by electrons trapped in the 1012 G pulsar polar cap magnetic field. In this paper we present a review of observations, from the discovery of a cyclotron line in Hercules X-1 to recent results with RXTE and INTEGRAL. |
| Keywords: | X-rays X-ray binaries X-ray spectroscopy Cyclotron lines Neutron stars Pulsars Accretion |
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