138 citations · 1.3k across the 79 of their papers we have counts for
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Survival of dust in super-dusty galaxies at redshifts
Yuri A. Shchekinov, Biman B. Nath
The presence of dust in galaxies at redshifts is commonly connected with core collapse supernovae (SN). Galaxies with exceptionally large dust mass, of order of \% of…
Can supernova from runaway stars mimic the signs of absorbing `super-virial' gas?
Mukesh Singh Bisht, Projjwal Banerjee, Biman B. Nath +1
The recent detection of large column density absorption lines from highly ionized gas in a few directions through the circumgalactic medium (CGM) of the Milky Way (MW) has been puz…
AstroSat/UVIT Study of the Diffuse Ultraviolet Radiation in the Dwarf Galaxy Holmberg II
Olag Pratim Bordoloi, B. Ananthamoorthy, P. Shalima +4
We present measurements of diffuse ultraviolet emission in the dwarf irregular galaxy Holmberg II obtained with the UltraViolet Imaging Telescope (UVIT) onboard AstroSat. With a sp…
Velocity Dispersion and H emission of Ionized Gas in Star-forming Regions
Evgemii O. Vasiliev, Yuri A. Shchekinov
For understanding the nature of gaseous flows in star-forming regions of nearby galaxies it is usually utilized the relation between surface brightness in H line and velocity di…
Unravelling multi-temperature dust populations in the dwarf galaxy Holmberg II
Olag Pratim Bordoloi, Yuri A. Shchekinov, P. Shalima +2
Holmberg II - a dwarf galaxy in the nearby M81 group - is a very informative source of distribution of gas and dust in the interstellar discs. High-resolution observations in the i…
Dust evolution in a supernova interacting with the ISM
Evgenii O. Vasiliev, Yuri A. Shchekinov
Supernovae (SN) explosions are thought to be an important source of dust in galaxies. At the same time strong shocks from SNe are known as an efficient mechanism of dust destructio…
Disc-halo gas outflows driven by stellar clusters as seen in multiwavelength tracers
Evgenii O. Vasiliev, Sergey A. Drozdov, Biman B. Nath +2
We consider the dynamics of and emission from growing superbubbles in a stratified interstellar gaseous disc driven by energy release from supernovae explosions in stellar clusters…
Dust-free starburst galaxies at redshifts
Biman B. Nath, Evgenii O. Vasiliev, Sergey A. Drozdov +1
One of the most distant galaxies GN-z11 was formed when the Universe was 400 Myr old, and it displays a burst-like star formation rate yr with a meta…
Dust in Clusters of Galaxies
Yuri A. Shchekinov, Biman B. Nath, Evgenii O. Vasiliev
The presence of dust in the intracluster medium (ICM) has been a long-standing problem that is still awaiting elucidation. Direct observational diagnostics are rather challenging (…
Simulations of M87 and Sgr A* Imaging with the Millimetron Space Observatory on near-Earth orbits
A. S. Andrianov, A. M. Baryshev, H. Falcke +11
High resolution imaging of supermassive black holes shadows is a direct way to verify the theory of general relativity at extreme gravity conditions. Very Long Baseline Interferome…
Far-infrared nebular spectral features from growing massive black holes
Evgenii O. Vasiliev, Yuri A. Shchekinov, Biman B. Nath
Supermassive black holes (BHs) and their host galaxies are interlinked by virtue of feedbacks and are thought to be co-eval across the Hubble time. This relation is highlighted by…
Radio halos of star forming galaxies
Aditi Vijayan, Biman B. Nath, Prateek Sharma +1
We study the synchrotron radio emission from extra-planar regions of star forming galaxies. We use ideal magneto-hydrodynamical (MHD) simulations of a rotating Milky Way-type disk…
Submillimeter signatures from growing supermassive black holes before reionization
Evgenii O. Vasiliev, Yuri A. Shchekinov
The presence of supermassive black holes (SMBHs) with masses up to at redshifts suggests that their seeds may have started to grow long befo…
Launching of hot gas outflow by disc-wide supernova explosions
Evgenii O. Vasiliev, Yuri A. Shchekinov, Biman B. Nath
Galactic gas outflows are driven by stellar feedback with dominant contribution from supernovae (SN) explosions. The question of whether the energy deposited by SNe initiates a lar…
Observing the influence of growing black holes on the pre-reionization IGM
Evgenii O. Vasiliev, Shiv K. Sethi, Yuri A. Shchekinov
We consider cosmological implications of the formation of first stellar size black holes (BHs) in the universe. Such BHs form and grow by accretion in minihaloes of masses $\simeq…
Extra-planar X-ray emission from disc-wide outflows in spiral galaxies
Aditi Vijayan, Kartick C. Sarkar, Biman B. Nath +2
We study the effects of mass and energy injection due to OB associations spread across the rotating disc of a Milky Way-type galaxy, with the help of 3D hydrodynamic simulations. W…
The mysterious absorption feature of the Galactic halo
Shiv K. Sethi, Yuri Shchekinov, Biman B. Nath
We consider various possible scenarios to explain the recent observation of a claimed broad H absorption in our Galactic halo with peak optical depth and equivale…
On the incidence of MgII absorbers along the blazar sightlines
S. Mishra, H. Chand, Gopal-Krishna +3
It is widely believed that the cool gas clouds traced by MgII absorption, within a velocity offset of 5000 km/s relative to the background quasar are mostly associated with the qua…
Evolution of clustered supernovae
Evgenii O. Vasiliev, Yuri A. Shchekinov, Biman B. Nath
We study the merging and evolution of isolated supernovae (SNe) remnants in a stellar cluster into a collective superbubble, with the help of 3-D hydrodynamic simulations. We parti…
Complexes of triggered star formation in supergiant shell of Holmberg II
Oleg V. Egorov, Tatiana A. Lozinskaya, Alexei V. Moiseev +1
We report a detailed analysis of all regions of current star formation in the walls of the supergiant HI shell (SGS) in the galaxy Holmberg II based on observations with a scanning…
Molecular outflows in starburst nuclei
Arpita Roy, Biman B. Nath, Prateek Sharma +1
Recent observations have detected molecular outflows in a few nearby starburst nuclei. We discuss the physical processes at work in such an environment in order to outline a scenar…
How radiation affects superbubbles: Through momentum injection in early phase and photo-heating thereafter
Siddhartha Gupta, Biman B. Nath, Prateek Sharma +1
Energetic winds and radiation from massive star clusters push the surrounding gas and blow superbubbles in the interstellar medium (ISM). Using 1-D hydrodynamic simulations, we stu…
Diffuse X-ray emission from star forming galaxies
Kartick C. Sarkar, Biman B. Nath, Prateek Sharma +1
We study the diffuse X-ray luminosity () of star forming galaxies using 2-D axisymmetric hydrodynamical simulations and analytical considerations of supernovae (SNe) driven ga…
Dynamics of a Supernova Envelope in a Cloudy Interstellar Medium
V. V. Korolev, E. O. Vasiliev, I. G. Kovalenko +1
The evolution of a supernova remnant in a cloudy medium as a function of the volume filling factor of the clouds is studied in a three-dimensional axially symmetrical model. The mo…