Mushtukov A.; Poutanen J.; Suleimanov V.; Tsygankov S.; Nagirner D.; Doroshenko V.; Lutovinov A.
(2014)
Cyclotron resonance scattering features are observed in the spectra of some X-ray pulsars and show significant changes in the line energy with the pulsar luminosity. In a case of bright sources, the line centroid energy ...