Goswami, Partha Pratim(Indian Institute of Astrophysics, 2022-06)
After more than six decades of the pioneering work of Burbidge, Burbidge, Fowler
and Hoyle (1957), which first suggested the production channels and the evolution of
neutron-capture elements, many details still remain ...
Hemanth, P(Indian Institute of Astrophysics, 2019-05)
Solar atmosphere is permeated with magnetic fields of various spatial scales
that exhibit dynamics in various temporal scales. Study of so called active regions
and their magnetic field measurements are of paramount ...
Anshu Kumari(Indian Institute of Astrophysics, 2019-12)
The coronal magnetic field (B) plays an important role in the formation, evolution, and dynamics of the small, as well as large scale structures in the solar
corona. Measurements of the coronal magnetic field strengths, ...
Anwesh Kumar, M(Indian Institute of Astrophysics, 2021-01)
In order to fill the void of observation of bright near infrared astronomical
sources, we propose a Near Infrared photometer operating from a low latitude
astronomical site. As part of this thesis work, design decisions ...
Shejeelammal, J(Indian Institute of Astrophysics, 2022-06)
The low- and intermediate-mass stars are the major inhabitants of our Galaxy. They
play an important role in the chemical evolution of the Galaxy. These stars have
enriched the ISM with the products of various nucleosynthesis ...
Sireesha, C(Indian Institute of Astrophysics, 2019-08)
The Echelle spectrograph operating at Vainu Bappu Telescope (VBT)
is a general-purpose instrument designed for high-resolution spectroscopy.
It was considered for precision Radial Velocity (RV) measurements without
altering ...
Ritesh, Patel(Indian Institute of Astrophysics, 2021-08)
The solar corona is known to be associated with eruptions of large amount
of magnetized plasma into the interplanetary space. In-spite of several years of
ground- and space-based observations of the solar atmosphere, the ...
Jacob, A(Indian Institute of Astrophysics, 2020-10)
Astronomy today is in the path of constructing large telescopes. Due to several
manufacturing and maintenance difficulties, large telescopes of more than 8 m
are predominantly segmented. To fulfill the need for its growing ...
Goyal, Priya(Indian Institute of Astrophysics, 2021-08)
The large scale structure in the universe causes arcminute angular scale deflections of
the paths of CMB photons, leading to blurring of the acoustic peaks and correlations
between different modes. This effect can be ...
Chakrabarty, Aritra(Indian Institute of Astrophysics, 2020-09)
Detection and characterization of extra-solar planets (also known as exoplanets) is an emerging field that has been constantly evolving with the advent
of new cutting-edge observational techniques and the development of ...
Singh, Raghubar(Indian Institute of Astrophysics, 2021-07)
Lithium (Li) is susceptible to relatively low temperatures. Hence, Li abundances among red giants are expected to be depleted signi cantly, by a factor of 40-60, from its original value on the main sequence. Assuming A(Li)= ...
Amit Kumar Mandal(Indian Institute of Astrophysics, 2021-06)
Active galactic nuclei (AGN) are the persistent high luminosity sources
powered by accretion of matter onto super massive black holes (SMBHs)
at their centres. They are known to show flux variation and this property
can ...
Sharma, Ekta(Indian Institute of Astrophysics, 2020-11)
Stars form in the densest regions of molecular clouds which are actually gravitationally unstable
cores that resides at the junction of filaments. Before the onset of the gravitational collapse in cores,
the build up of ...
Bhowmick, A(Indian Institute of Astrophysics, 2020-12)
The existence of hydrogen-deficient stars in a hydrogen-dominated universe in itself, sparks a considerable curiosity to explore their origin and evolution. Very
rare in nature, the peculiar characteristics of these ...
Roy, Tridib(Indian Institute of Astrophysics, 2020-06)
The thesis is mainly focused on the modeling of pulsar radio emission and polarization.
The radio emission mechanism of pulsar is not fully understood, because of the lack
of understanding about the kinematical processes ...
Pavana, M(Indian Institute of Astrophysics, 2020-09)
Novae are interacting binary star systems consisting of a Roche-lobe filling secondary
on or near the main sequence, losing hydrogen-rich material through the
inner-Lagrangian point onto an accretion disc surrounding the ...
Megha, A(Indian Institute of Astrophysics, 2020-05)
Magnetic fields are ubiquitous in astrophysical plasmas. They are responsible for
most of the stellar activities and they manifest in numerous ways in the stellar
atmospheres. The Sun being our nearest star is the natural ...