181 citations · 1.1k across the 31 of their papers we have counts for
31 papers
Mysterious non-detection of HeI (23S) transit absorption of GJ436b
M. S. Rumenskikh, M. L. Khodachenko, I. F. Shaikhislamov +4
Possible reasons for the non-detection of absorption in the metastable HeI(2^3S) line at transit observations of warm Neptune GJ436b, in spite of the well pronounced strong absorpt…
On the origin of the non-detection of metastable HeI in the upper atmosphere of the hot Jupiter WASP-80b
L. Fossati, I. Pillitteri, I. F. Shaikhislamov +5
We aim to narrow down the origin of the non-detection of the metastable HeI triplet at about 10830 A obtained for the hot Jupiter WASP-80b. We measure the X-ray flux of WASP-80 fro…
Laboratory modelling of solar wind interaction with Lunar Magnetic Anomalies
M. S. Rumenskikh, A. A. Chibranov, M. A. Efimov +8
The paper presents results of laboratory experiment modeling the interaction between Lunar magnetic anomalies and Solar wind. To model the LMA we use quadrupole magnetic field. The…
Global 3D simulation of the upper atmosphere of HD189733b and absorption in metastable HeI and Lyα lines
M. S. Rumenskikh, I. F. Shaikhislamov, M. L. Khodachenko +4
A 3D fully self-consistent multi-fluid hydrodynamic aeronomy model is applied to simulate the hydrogen-helium expanding upper atmosphere of the hot Jupiter HD189733b, and related a…
The GAPS Programme at TNG. XXXII. The revealing non-detection of metastable HeI in the atmosphere of the hot Jupiter WASP-80b
L. Fossati, G. Guilluy, I. F. Shaikhislamov +38
The hot Jupiter WASP-80b has been identified as a possible excellent target for detecting and measuring HeI absorption in the upper atmosphere. We observed 4 primary transits of WA…
The impact of intrinsic magnetic field on the absorption signatures of elements probing the upper atmosphere of HD209458b
M. L. Khodachenko, I. F. Shaikhislamov, H. Lammer +4
The signs of an expanding atmosphere of HD209458b have been observed with far-ultraviolet transmission spectroscopy and in the measurements of transit absorption by metastable HeI.…
Simulation of 10830 Å absorption with a 3D hydrodynamic model reveals the solar He abundance in upper atmosphere of WASP-107b
M. L. Khodachenko, I. F. Shaikhislamov, L. Fossati +5
Transmission spectroscopy of WASP-107b revealed 7-8% absorption at the position of metastable HeI triplet at 10830 Å in Doppler velocity range of [-20; 10] km/s, which is stronger…
Hydrogen dominated atmospheres on terrestrial mass planets: evidence, origin and evolution
J. E. Owen, I. F. Shaikhislamov, H. Lammer +2
The discovery of thousands of highly irradiated, low-mass, exoplanets has led to the idea that atmospheric escape is an important process that can drive their evolution. Of particu…
Global 3D hydrodynamic modeling of absorption in Lyα and He 10830 A lines at transits of GJ3470b
I. F. Shaikhislamov, M. L. Khodachenko, H. Lammer +3
Warm Neptune GJ3470b has been recently observed in 23S-23P transition of metastable helium, yielding absorption of about 1% in Doppler velocity range of [-40; 10] km/s. Along with…
Three-dimensional hydrodynamic simulations of the upper atmosphere of Men c: comparison with Ly transit observations
I. F. Shaikhislamov, L. Fossati, M. L. Khodachenko +5
Aims: We aim at constraining the conditions of the wind and high-energy emission of the host star reproducing the non-detection of Ly planetary absorption. Methods: We model the…
Three-dimensional modelling of absorption by various species for hot Jupiter HD 209458b
I F Shaikhislamov, M L Khodachenko, H Lammer +3
The absorption of stellar radiation observed by the HD209458b in resonant lines of OI and CII has not yet been satisfactorily modeled. In our previous 2D simulations we have shown…
Global 3D hydrodynamic modeling of in-transit Lyα absorption of GJ436b
M. L. Khodachenko, I. F. Shaikhislamov, H. Lammer +4
Using a global 3D, fully self-consistent, multi-fluid hydrodynamic model, we simulate the escaping upper atmosphere of the warm Neptune GJ436b, driven by the stellar XUV radiation…
Modelling atmospheric escape and MgII near-ultraviolet absorption of the highly irradiated hot Jupiter WASP-12b
N. K. Dwivedi, M. L. Khodachenko, I. F. Shaikhislamov +8
We present two-dimensional multi-fluid numerical modelling of the upper atmosphere of the hot Jupiter WASP-12b. The model includes hydrogen chemistry, and self-consistently describ…
Transit Ly- signatures of terrestrial planets in the habitable zones of M dwarfs
K. G. Kislyakova, M. Holmström, P. Odert +6
We modeled the transit signatures in the Lya line of a putative Earth-sized planet orbiting in the HZ of the M dwarf GJ436. We estimated the transit depth in the Lya line for an ex…
3D Aeronomy Modeling of Close-in Exoplanets
I. F. Shaikhislamov, M. L. Khodachenko, H. Lammer +3
We present a 3D fully selfconsistent multi-fluid hydrodynamic aeronomy model to study the structure of a hydrogen dominated expanding upper atmosphere around the hot Jupiter HD 209…
Island instability as a mechanism of destabilization and collapse of current sheets
I F Shaikhislamov
The work shows that a single elongated island immersed in the quasi-neutral current sheet makes it MHD unstable. Typical values of growth rate are found to be several per cent of i…
Collapse of the neutral current sheet and reconnection at micro-scales
I F Shaikhislamov
Reconnection physics at micro-scales is investigated in an electron magnetohydrodynamics frame. A new process of collapse of the neutral current sheet is demonstrated by means of a…
Laboratory experiment on region-1 field-aligned current and its origin in low-latitude boundary layer
I F Shaikhislamov, Yu P Zakharov, V G Posukh +4
In previous experiments by the authors on a magnetic dipole interacting with a laser-produced plasma the generation of an intense field-aligned current (FAC) system on terrella pol…
Laboratory simulation of field aligned currents in experiment on laser-produced plasma interacting with magnetic dipole
I F Shaikhislamov, V M Antonov, Yu P Zakharov +4
In an experiment on a magnetic dipole interacting with a laser-produced plasma the generation of an intense field aligned current (FAC) system was observed for the first time in a…
Lyα Absorption at Transits of HD 209458b: A Comparative Study of Various Mechanisms Under Different Conditions
M. L. Khodachenko, I. F. Shaikhislamov, H. Lammer +7
To shed more light on the nature of the observed Lyα absorption during transits of HD 209458b and to quantify the major mechanisms responsible for the production of fast hydrogen a…
Experimental study of mini-magnetosphere
Shaikhislamov I F, Yu P Zakharov, V G Posukh +4
Magnetosphere at ion kinetic scales, or mini-magnetosphere, possesses unusual features as predicted by numerical simulations. However, there are practically no data on the subject…
West-east asymmetry of a mini-magnetosphere induced by Hall effects
I F Shaikhislamov, V G Posukh, A V Melekhov +3
A magnetosphere comparable in size to ion inertial length, known as a mini-magnetosphere, possesses unusual features which have been predicted by numerical simulations and shown in…
Atmosphere Expansion and Mass Loss of Close-Orbit Giant Exoplanets heated by Stellar XUV. II. Effects of Planetary Magnetic Field, Structuring of inner Magnetosphere
M. L. Khodachenko, I. F. Shaikhislamov, H. Lammer +1
This is the second paper in a series where we build a self-consistent model to simulate the mass-loss process of a close-orbit magnetized giant exoplanet, so-called hot Jupiter (HJ…
Laboratory model of magnetosphere created by strong plasma perturbation with frozen-in magnetic field
I F Shaikhislamov, Yu P Zakharov, V G Posukh +4
Transient interaction of magnetic dipole with plasma flow carrying southward magnetic field is studied in laboratory experiment. The flow with transverse frozen-in field is generat…