Gas envelopes of exoplanets—hot Jupiters

DV Bisikalo, VI Shematovich, PV Kaygorodov… - Physics …, 2021 - iopscience.iop.org
We consider the physical characteristics and dynamics of the gaseous envelopes of hot
Jupiters (HJs)—gas giants with a mass comparable to Jupiter's and a semi-major axis of less …

Flow structure in magnetic close binary stars

AG Zhilkin, DV Bisikalo, AA Boyarchuk - Physics-Uspekhi, 2012 - iopscience.iop.org
The current understanding of mass exchange processes between close binary system
(CBS) components is reviewed, with particular attention on the mass flow structure and …

Three-dimensional gas dynamic simulation of the interaction between the exoplanet WASP-12b and its host star

D Bisikalo, P Kaygorodov, D Ionov… - The Astrophysical …, 2013 - iopscience.iop.org
ABSTRACT Hubble Space Telescope transit observations in the near-UV performed in 2009
made WASP-12b one of the most" mysterious" exoplanets; the system presents an early …

Scientific problems addressed by the Spektr-UV space project (world space Observatory—Ultraviolet)

AA Boyarchuk, BM Shustov, IS Savanov, ME Sachkov… - Astronomy Reports, 2016 - Springer
The article presents a review of scientific problems and methods of ultraviolet astronomy,
focusing on perspective scientific problems (directions) whose solution requires UV space …

The influence of coronal mass ejections on the mass-loss rates of hot-Jupiters

A Cherenkov, D Bisikalo, L Fossati… - The Astrophysical …, 2017 - iopscience.iop.org
Hot-Jupiters are subject to extreme radiation and plasma flows coming from their host stars.
Past ultraviolet Hubble Space Telescope observations, supported by hydrodynamic models …

Types of gaseous envelopes of “hot Jupiter” exoplanets

DV Bisikalo, PV Kaigorodov, DE Ionov… - Astronomy Reports, 2013 - Springer
As a rule, the orbital velocities of “hot Jupiters,” ie, exoplanets with masses comparable to
the mass of Jupiter and orbital semi-major axes less than 0.1 AU, are supersonic relative to …

Morphology of the interaction between the stream and cool accretion disk in a semidetached binary system

DV Bisikalo, AA Boyarchuk, PV Kaigorodov… - Astronomy Reports, 2003 - Springer
We analyze heating and cooling processes in accretion disks in binaries. For realistic
parameters of the accretion disks in close binaries (̇ M ≃ 10^-12-10^ 7 M_ ⊙/yr and α⋍ …

The structure of cool accretion disks in semidetached binaries

DV Bisikalo, AA Boyarchuk, PV Kaigorodov… - Astronomy reports, 2004 - Springer
We present a qualitative analysis of possible changes in the structure of accretion disks that
occur in the transition from hot to cool disks. We suggest that an additional spiral-density …

Wind-accelerated orbital evolution in binary systems with giant stars

Z Chen, EG Blackman, J Nordhaus… - Monthly Notices of …, 2018 - academic.oup.com
Using 3D radiation-hydrodynamic simulations and analytic theory, we study the orbital
evolution of asymptotic giant branch (AGB) binary systems for various initial orbital …

Gravitating discs around black holes

V Karas, JM Huré, O Semerák - Classical and Quantum Gravity, 2004 - iopscience.iop.org
Fluid discs and tori around black holes are discussed within different approaches and with
the emphasis on the role of disc gravity. First reviewed are the prospects of investigating the …