91 citations · 635 across the 23 of their papers we have counts for
21 papers
Spin-down of the accreting magnetar candidate 4U 0114+65: possible first evidence for a strong coupling regime
Graciela Sanjurjo-Ferrín, Jose Miguel Torrejón, Konstantin Postnov +3
4U~0114+65 is a high-mass X-ray binary composed of the B1\,Ia supergiant V*~V662~Cas and one of the slowest known accreting neutron stars, with a spin period of 9.4 ks. In 20…
Luminosity-dependent changes of the cyclotron line energy and spectral hardness in Cep X-4
V. Vybornov, D. Klochkov, M. Gornostaev +5
X-ray spectra of accreting pulsars are generally observed to vary with their X-ray luminosity. In particular, the hardness of the X-ray continuum is found to depend on luminosity.…
INTEGRAL study of temporal properties of bright flares in Supergiant Fast X-ray Transients
L. Sidoli, A. Paizis, K. Postnov
We have characterized the typical temporal behaviour of the bright X-ray flares detected from the three Supergiant Fast X-ray Transients showing the most extreme transient behaviou…
On the dependence of the X-ray continuum variations with luminosity in accreting X-ray pulsars
K. A. Postnov, M. I. Gornostaev, D. Klochkov +3
Using RXTE/ASM archival data, we investigate the behaviour of the spectral hardness ratio as a function of X-ray luminosity in a sample of six transient X-ray pulsars (EXO 2030+375…
Theory of wind accretion
N. I. Shakura, K. A. Postnov, A. Yu. Kochetkova +1
A review of wind accretion in high-mass X-ray binaries is presented. We focus attention to different regimes of quasi-spherical accretion onto the neutron star: the supersonic (Bon…
Thermal Emission in Gamma-Ray Burst Afterglows
D. A. Badjin, S. I. Blinnikov, K. A. Postnov
We study thermal emission from circumstellar structures heated by gamma-ray burst (GRB) radiation and ejecta and calculate its contribution to GRB optical and X-ray afterglows usin…