Yadav, Jyoti(Indian Institute of Astrophysics, 2023-05)
The cold gas accretion and merging of galaxies are two important physical mechanisms which contribute to the building up of galaxies at various epochs of the universe. Thus, it is crucial to understand the role of gas ...
Fazlu, Rahman(Indian Institute of Astrophysics, 2023-08)
Accurate component separation of full-sky maps in the radio and microwave frequencies, such as the cosmic microwave background (CMB), relies on a thorough understanding of the statistical properties of the Galactic foreground ...
Pal, Indrani(Indian Institute of Astrophysics, 2023-05)
Active Galactic Nuclei (AGN), amongst the most luminous sources in the Universe (L = 1042 − 1046 erg s −1 ), emit radiation over the entire electromagnetic band. Though AGN are known to be powered by the accretion of matter ...
Dutta, Anirban(Indian Institute of Astrophysics, 2023-05)
Type Ia supernovae (SNe Ia) result from thermonuclear explosions in binary systems consisting of at least one carbon-oxygen white dwarf. They are crucial for the understanding of galactic chemical composition as they are ...
Das, Tanya(Indian Institute of Astrophysics, 2021)
Accurate wavelength calibration is an important factor for any measure ment with high resolution spectrographs. Stellar spectrum comprises of dis crete absorption or emission lines whose position is precisely determined ...
Rani, Sharmila(Indian Institute of Astrophysics, 2023-02)
Star clusters are gravitationally bound systems composed of a large number of stars,
ranging from thousands to millions. As the dynamic age of the cluster is less than
the age of the universe, dynamical interactions ...
Sengupta, Soumya(Indian Institute of Astrophysics, 2022-05)
Context: Starting from the first discovery of extrasolar planet or exoplanet around
a sun-like star, more than 5,000 confirmed exoplanets have been detected till now.
But still we have very less information and interpretations ...
Majumdar, Satabdwa(Indian Institute of Astrophysics, 2022-07)
Ever since the dawn of astronomy, we and the Sun have not been celestial strangers
anymore, and it was soon realised that there is a close Sun-Earth connection that was
awaiting our acknowledgement. With that came several ...
Saha, Suman(Indian Institute of Astrophysics, 2022-09)
The most challenging limitation in the transit photometry method arises from the
noises in the photometric signal. In particular, the ground-based telescopes are
heavily affected by the noise due to the perturbation in ...
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 ...