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  1. No Access

    Article

    Kinetic Monte Carlo Model for the Precipitation of High-Energy Protons and Hydrogen Atoms into the Atmosphere of Mars with Taking into Account the Measured Magnetic Field

    Results of model computations of the interaction of the high-energy protons and hydrogen atoms (H/H+) precipitating into the Martian atmosphere are presented. These computations were performed using a modificatio...

    V. I. Shematovich, D. V. Bisikalo, J.-C. Gérard, B. Hubert in Astronomy Reports (2019)

  2. No Access

    Article

    Flow Structure in the Eclipsing Polar V808 Aur. Results of 3D Numerical Simulations

    The structure of the flows in the eclipsing polar V808 Aur is studied. Comparison of computations with observed light curves is used to identify and clarify a number of features in the system, such as the drif...

    A. G. Zhilkin, A. V. Sobolev, D. V. Bisikalo, M. M. Gabdeev in Astronomy Reports (2019)

  3. No Access

    Article

    On Possible Types of Magnetospheres of Hot Jupiters

    As a rule, the orbits of “hot Jupiter” exoplanets are located close to the Alfven point of the stellar wind of the host star. Many hot Jupiters could be in the sub-Alfven zone, where the magnetic pressure of t...

    A. G. Zhilkin, D. V. Bisikalo in Astronomy Reports (2019)

  4. No Access

    Article

    Interaction of the Extended Envelope of a Hot Jupiter with a Narrow Coronal Mass Ejection

    The passage of a hot Jupiter with a quasi-closed extended envelope through a short coronal mass ejection (CME) with a small opening angle is considered. The results of three-dimensional gasdynamical simulation...

    P. V. Kaigorodov, E. A. Ilyina, D. V. Bisikalo in Astronomy Reports (2019)

  5. No Access

    Article

    The Influence of Superflares of Host Stars on the Dynamics of the Envelopes of Hot Jupiters

    Results of a study of the influence of solar-type host stars superflares on the gas dynamics of the extended envelopes of giant exoplanets are presented. During flare events, the radiation intensity of the hos...

    A. A. Cherenkov, I. F. Shaikhislamov, D. V. Bisikalo… in Astronomy Reports (2019)

  6. No Access

    Article

    A Possible Mechanism for the Radio Emission of Polars

    A means of generating the radio emission of polars is proposed, based on cyclotron radiation of thermal electrons in a fluctuating magnetic field. The source of these fluctuations is Alfvén turbulence. Express...

    E. P. Kurbatov, A. G. Zhilkin, D. V. Bisikalo in Astronomy Reports (2019)

  7. No Access

    Article

    Possible Electromagnetic Manifestations of Merging Black Holes

    The scenario of a merger of two black holes surrounded by an accretion disk is considered. As a result of the emission of gravitational waves, the mass of the central object decreases, and the accretion disk i...

    D. V. Bisikalo, A. G. Zhilkin, E. P. Kurbatov in Astronomy Reports (2019)

  8. No Access

    Article

    Observational Manifestations of the Precessional Wave in the Accretion Disk of a Cataclysmic Variable Star

    Effects due to the interaction of the steam from the inner Lagrangian point with the accretion disk in a cataclysmic variable star are considered. The results of three-dimensional gas-dynamical numerical simul...

    P. V. Kaigorodov, D. V. Bisikalo in Astronomy Reports (2018)

  9. No Access

    Article

    Turbulence in the Accretion Disks in Semi-Detached Binary Systems with Various Component-Mass Ratios

    Results of three-dimensional gas-dynamical numerical simulations of the structure of matter flows in semi-detached binary systems with various component-mass ratios are considered. The main elements of the flo...

    E. P. Kurbatov, A. M. Fateeva, P. V. Kaigorodov, D. V. Bisikalo in Astronomy Reports (2018)

  10. No Access

    Article

    The Influence of a Stellar Flare on the Dynamical State of the Atmosphere of the Exoplanet HD 209458b

    A one-dimensional aeronomic model of the upper atmosphere of a giant planet is used to study the reaction of the atmosphere of the hot Jupiter HD 209458b to additional heating by a stellar flare. It is shown t...

    D. V. Bisikalo, A. A. Cherenkov, V. I. Shematovich, L. Fossati… in Astronomy Reports (2018)

  11. No Access

    Article

    Comparison of Dimensionless Parameters in Astrophysical MHD Systems and in Laboratory Experiments

    Estimates of typical parameters of accretion flows in the representative intermediate polar EX Hydrae, the polar AM Herculis, and the “hot Jupiter” WASP-12b are presented. Dimensionless parameters of astrophys...

    E. P. Kurbatov, D. V. Bisikalo, M. V. Starodubtsev, A. Ciardi… in Astronomy Reports (2018)

  12. No Access

    Article

    Features of the Flow Structure in the Vicinity of the Inner Lagrangian Point in Polars

    The structures of plasma flows in close binary systems whose accretors have strong intrinsic magnetic fields are studied. A close binary system with the parameters of a typical polar is considered. The results...

    P. B. Isakova, A. G. Zhilkin, D. V. Bisikalo in Astronomy Reports (2018)

  13. No Access

    Article

    Perspectives for Distributed Observations of Near-Earth Space Using a Russian–Cuban Observatory

    The creation of a specialized network of large, wide-angle telescopes for distributed observations of near-Earth space using a Russian–Cuban Observatory is considered. An extremely important goal of routine mo...

    D. V. Bisikalo, I. S. Savanov, S. A. Naroenkov, M. A. Nalivkin… in Astronomy Reports (2018)

  14. No Access

    Article

    Gas–Dynamical Features of the Envelopes of Contact Binary Stars

    The results of three-dimensional numerical simulations of the gaseous envelope of a contact binary star with parameters similar to those of SV Cen are presented. The outflow of matter from the vicinity of the ...

    V. I. Shematovich, P. V. Kaigorodov, D. V. Bisikalo, A. M. Fateeva in Astronomy Reports (2017)

  15. No Access

    Article

    Excitation of Turbulence in Protoplanetary Disks around Binary Stars

    Accretion disks around young binary stars are subject to strong forces exerted by the system components. Gas–dynamical interactions excite strong non-linear perturbations in the disk, which can give rise to tu...

    E. P. Kurbatov, A. Yu. Sytov, D. V. Bisikalo in Astronomy Reports (2017)

  16. No Access

    Article

    Evolution of the accretion structure of the compact object in the symbiotic binary BF Cygni during outburst in 2009–2014

    The eclipsing symbiotic binary BF Cyg has had five orbital minima during its last optical outburst after 2006. The second minimum is much shallower than the first one and after that the minimum get deeper agai...

    N. A. Tomov, M. T. Tomova, D. V. Bisikalo in Astrophysics and Space Science (2017)

  17. No Access

    Article

    Reduction of mass loss by the hot Jupiter WASP-12b due to its magnetic field

    The influence of the dipolar magnetic field of a “hot Jupiter” with the parameters of the object WASP-12b on the mass-loss rate from its atmosphere is investigated. The results of three-dimensional gas-dynamic...

    A. S. Arakcheev, A. G. Zhilkin, P. V. Kaigorodov, D. V. Bisikalo… in Astronomy Reports (2017)

  18. No Access

    Article

    Pulsations in the atmospheres of hot Jupiters possessing magnetic fields

    The discovery of the possible existence of huge quasi-stationary envelopes around a number of hot Jupiters (i.e., with sizes appreciably exceeding their Roche lobes) and the need to correctly take into account...

    D. V. Bisikalo, A. S. Arakcheev, P. V. Kaigorodov in Astronomy Reports (2017)

  19. No Access

    Article

    Changes in the Martian atmosphere induced by auroral electron precipitation

    Typical auroral events in the Martian atmosphere, such as discrete and diffuse auroral emissions detected by UV spectrometers onboard ESA Mars Express and NASA MAVEN, are investigated. Auroral electron kinetic en...

    V. I. Shematovich, D. V. Bisikalo, J.-C. Gérard, B. Hubert in Solar System Research (2017)

  20. No Access

    Article

    Interaction of the stream from L 1 with the outer edge of the accretion disk in a cataclysmic variable

    Vertical oscillations of the gas at the outer edge of the accretion disk in a semi-detached binary due to interaction with the stream of matter from the inner Lagrangian point L 1 ...

    P. V. Kaigorodov, D. V. Bisikalo, E. P. Kurbatov in Astronomy Reports (2017)

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