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Now showing items 11-18 of 18
Analytical Formalism to Study the 21 cm Signal from Cosmic Dawn and Epoch of Reionization
The epoch of Cosmic Dawn and Reionization is one of the most important time periods of the
universe when first sources of radiation like stars and galaxies were formed, and they changed the
properties of their surrounding ...
The Formation and Evolution of Bars, and Its Impact on Galaxy Dynamics
In this thesis we have studied bar formation and evolution using N-body simulations. We
have focused on the effect of bulge mass and concentration on bar formation and evolution,
and derived a new bar formation criterion. ...
Nonlinear and Geometric Properties of Accreting Compact Sources Based on Spectral and Timing Analyses
We study the spectro-temporal properties of the black hole X-ray binaries (BHXBs) GRS 1915+105
and IGR J17091-3624 with data from RXTE, Chandra and XMM-Newton. From the analysis
result, we propose models of accretion ...
Magnetically arrested advective accretion flows around black holes and their implications to ultraluminous X-ray sources and blazars
Black hole (BH) accretions are very powerful sources of energy in the universe. In accretion phenomena, the surrounding gas spirals down towards the central BH and forms a disc or quasi-spherical structure based on the ...
The multiphase interstellar medium: A study of various physical and kinematical properties
Interstellar medium (ISM) is the relatively empty space in between the stars. It has different
phases, like, neutral, molecular, and ionized. Neutral interstellar medium, which is pervaded
all over the galaxy, is sometimes ...
A study of the evolution of the bulges and disks of spiral galaxies in interacting and isolated environments
Galaxies are usually found in groups and clusters where they interact with each other gravitationally. These interactions affect the internal dynamics of the galaxies. In this thesis, we have studied the effect of flyby ...
Unravelling the kinematics, dynamics and structure of galaxies using H I - 21cm observation
The advent of the multi-wavelength observations of galaxies in this recent era gives us the opportunity to study the details of the different pivotal facets of galactic astrophysics. Among the observations in different ...
Insights into the genesis and dynamics of the solar spicule forest: aided by simulations and laboratory experiments
The solar atmosphere is embedded with an enormous no of plasma structures with a vast range
of spatial and temporal scales. Solar spicules are one of such ubiquitous features of the sun,
which are present in millions ...