76 citations · 323 across the 9 of their papers we have counts for
7 papers · 1 filter
Radiation-dominated polar emitting region of an accreting X-ray pulsar -- I. Polarization- and spectrum-dependent structure, and the emergent continuum
M. I. Gornostaev
The radiation-dominated polar emitting region of an accreting X-ray pulsar is simulated numerically in the framework of a three-dimensional (geometrically two-dimensional) model. T…
On thermalization of radiation in hydrostatic atmospheres
M. I. Gornostaev
The problem of thermalization of radiation within a self-emitting hydrogen isothermal atmosphere is considered for the case of a hydrostatic profile of the plasma density. The prob…
X-ray emission from magnetized neutron star atmospheres at low mass accretion rates. I. Phase-averaged spectrum
E. Sokolova-Lapa, M. Gornostaev, J. Wilms +12
Recent observations of X-ray pulsars at low luminosities allow, for the first time, to compare theoretical models for the emission from highly magnetized neutron star atmospheres a…
Three-dimensional modelling of accretion columns: spatial asymmetry and self-consistent simulations
M. I. Gornostaev
The paper presents the results of three-dimensional (3D) modelling of the structure and the emission of accretion columns formed above the surface of accreting strongly magnetized…
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.…
Discovery and Modeling of a Flattening of the Positive Cyclotron Line/Luminosity Relation in GX 304-1 with RXTE
Richard E. Rothschild, Matthias Kuehnel, Katja Pottschmidt +8
The RXTE observed four outbursts of the accreting X-ray binary transient source, GX 304-1 in 2010 and 2011. We present results of detailed 3-100 keV spectral analysis of 69 separat…
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…