Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Shakura, Nikolai"'
Her X-1/HZ Her is one of the best studied accreting X-ray pulsars. In addition to the pulsating and orbital periods, the X-ray and optical light curves of the source exhibit an almost periodic 35-day variability caused by a precessing accretion disk.
Externí odkaz:
http://arxiv.org/abs/2204.06408
Autor:
Lipunova, Galina, Malanchev, Konstantin, Tsygankov, Sergey, Shakura, Nikolai, Tavleev, Andrei, Kolesnikov, Dmitry
We present a model of a viscously evolving accretion disc around a magnetized neutron star. The model features the varying outer radius of the hot ionized part of the disc due to cooling and the varying inner radius of the disc due to interaction wit
Externí odkaz:
http://arxiv.org/abs/2110.08076
Autor:
Rothschild, Richard E., Kuehnel, Matthias, Pottschmidt, Katja, Hemphill, Paul, Postnov, Konstantin, Gornostaev, Mikhail, Shakura, Nikolai, Fuerst, Felix, Wilms, Joern, Staubert, Ruediger, Klochkov, Dmitry
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 separate observations, and report a positive correlation between cyclotron li
Externí odkaz:
http://arxiv.org/abs/1610.08944
Publikováno v:
Radiation mechanisms of astrophysical objects: classics today, 2016, pp. 331-336
Using the anelastic approximation of linearized hydrodynamic equations, we investigate the development of axially symmetric small perturbations in thin Keplerian discs. Dispersion relation is found as a solution of general Sturm-Liouville eigenvalue
Externí odkaz:
http://arxiv.org/abs/1603.04878
Publikováno v:
Astronomy Letters, 2015, Vol. 41, No. 12, pp. 797-808
We present a model of the non-stationary $\alpha$-disk with account for the irradiation and the vertical convection in the outer accretion disk where hydrogen is partially ionized. We include the viscous energy generation in the mix-length convection
Externí odkaz:
http://arxiv.org/abs/1511.02356
Autor:
Shakura, Nikolai, Postnov, Konstantin
Publikováno v:
Monthly Notices of the Royal Astronomical Society 2015 448 (4): 3707-3717
A viscous instability in shearing laminar axisymmetric hydrodynamic flows around a gravitating center is described. In the linearized hydrodynamic equations written in the Boussinesq approximation with microscopic molecular transport coefficients, th
Externí odkaz:
http://arxiv.org/abs/1502.01888
Autor:
Shakura, Nikolai I., Abolmasov, Pavel
Gravitational microlensing by the stellar population of lensing galaxies provides an important opportunity to spatially resolve the accretion disk structure in strongly lensed quasars. Some of the objects (like Einstein's cross) are reasonably consis
Externí odkaz:
http://arxiv.org/abs/1210.5087
Publikováno v:
2011AstL...37..311M
We have investigated the influence of X-ray irradiation on the vertical structure of the outer accretion disk in low-mass X-ray binaries by performing a self-consistent calculation of the vertical structure and X-ray radiation transfer in the disk. P
Externí odkaz:
http://arxiv.org/abs/1108.4222
We re-examine the infrared counterpart of the dipping low-mass x-ray binary 4U1323-619. New X-ray data available from the XMM and Chandra observatories combined with archival IR observations from the ESO 3.6m New Technology Telescope allow us to defi
Externí odkaz:
http://arxiv.org/abs/0908.4335
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