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XMM-Newton observations of 1A 0535+262 in quiescence
Victor Doroshenko, Andrea Santangelo, Rozaliya Doroshenko +3
Accretion onto magnetized neutron stars is expected to be centrifugally inhibited at low accretion rates. Several sources, however, are known to pulsate in quiescence at luminositi…
Spectral and temporal properties of the supergiant fast X-ray transient IGR J18483-0311 observed by INTEGRAL
L. Ducci, V. Doroshenko, M. Sasaki +4
IGR J18483-0311 is a supergiant fast X-ray transient whose compact object is located in a wide (18.5 d) and eccentric (e~0.4) orbit, which shows sporadic outbursts that reach X-ray…
On the origin of cyclotron lines in the spectra of X-ray pulsars
Alexander A. Mushtukov, Juri Poutanen, Valery F. Suleimanov +4
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 b…
Observations of The High Mass X-ray Binary A0535+26 in Quiescence
Richard Rothschild, Alex Markowitz, Paul Hemphill +7
We have analyzed 3 observations of the High Mass X-ray Binary A0535+26 performed by the Rossi X-ray Timing Explorer (RXTE) 3, 5, and 6 months after the last outburst in 2011 Februa…
Footprints in the wind of Vela X-1 traced with MAXI
V. Doroshenko, A. Santangelo, S. Nakahira +5
The stellar wind around the compact object in luminous wind-accreting high mass X-ray binaries is expected to be strongly ionized with the X-rays coming from the compact object. Th…
A reflection model for the cyclotron lines in the spectra of X-ray pulsars
Juri Poutanen, Alexander A. Mushtukov, Valery F. Suleimanov +4
Cyclotron resonance scattering features observed in the spectra of some X-ray pulsars show significant changes of the line energy with the pulsar luminosity. At high luminosities,…