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Cyclotron lines in subcritical X-ray pulsars: Monte Carlo simulations reveal the origin of the observed variability
Prodromos Fotiadis, Nick Loudas, Nikolaos D. Kylafis +1
Observed cyclotron resonant scattering features (CRSFs) in X-ray pulsars (XRPs) exhibit strong variability. In the subcritical luminosity regime, the centroid energy () a…
A quantitative explanation of the cyclotron-line variation in accreting magnetic neutron stars of super-critical luminosity
Nick Loudas, Nikolaos D. Kylafis, Joachim E. Trümper
Magnetic neutron stars (NSs) often exhibit a cyclotron resonant scattering feature (CRSF) in their X-ray spectra. Cyclotron lines are believed to form in the radiative shock in the…
Cyclotron line formation by reflection on the surface of a magnetic neutron star
N. D. Kylafis, J. E. Trümper, N. A. Loudas
Accretion onto magnetic neutron stars results in X-ray spectra that often exhibit a cyclotron resonance scattering feature (CRSF) and, sometimes, higher harmonics of it. Two places…
Second ROSAT all-sky survey (2RXS) source catalogue
Th. Boller, M. J. Freyberg, J. Truemper +3
We present the second ROSAT all-sky survey source catalogue, hereafter referred to as the 2RXS catalogue. This is the second publicly released ROSAT catalogue of point-like sources…
Spectral formation in a radiative shock: application to anomalous X-ray pulsars and soft gamma-ray repeaters
N. D. Kylafis, J. E. Truemper, U. Ertan
In the fallback disk model for the persistent emission of Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), the hard X-ray emission arises from bulk- and thermal…
On The Evolution of The Radio Pulsar PSR J1734-3333
S. Caliskan, U. Ertan, M. A. Alpar +2
Recent measurements showed that the period derivative of the 'high-B' radio pulsar PSR J1734-3333 is increasing with time. For neutron stars evolving with fallback disks, this rota…