Mathur, Harsh(Indian Institute of Astrophysics, 2024)
The chromosphere, situated between the bright photosphere and the remarkably thin transition region that precedes the million-degrees hot corona, is a highly dynamic and intricate layer within the solar atmosphere. By ...
Saraswathi Kalyani, S(Indian Institute of Astrophysics, 2024)
Ground-based telescopes are severely limited in their performance by the turbulence of the Earth’s atmosphere. The wavefronts emitted by the celestial bodies are perturbed and we lose high spatial frequency information. ...
Swastik, C(Indian Institute of Astrophysics, 2024-03)
Numerous groundbreaking discoveries have been made in exoplanet science over the
past decade. Recent exoplanet search surveys have provided compelling evidence that
planets are exceedingly common, with the majority of ...
Ansar, Sioree(Indian Institute of Astrophysics, 2024-03)
Investigating stellar structures such as stellar bars within the central regions of galaxies
holds promise as a means to examine the properties of dark matter halos associated
with those galaxies. Cosmological simulations ...
Singla, Manika(Indian Institute of Astrophysics, 2023-04)
Context: Over 5,000 exoplanets have been discovered to date, yet our
knowledge of their atmospheres is still quite limited, and we have not yet
identified any truly habitable exoplanets. It is the high time to characterize
the ...
Prabhakar, Maya(Indian Institute of Astrophysics, 2023-03)
The outer solar atmosphere, the corona, is known for its million-degree temperature. The mystery
surrounding the source of this high temperature is gradually being resolved with various theories,
observations and models. ...
Deepthi, S. Prabhu(Indian Institute of Astrophysics, 2023-07)
Galactic Globular clusters (GGCs) are old stellar systems (age ∼ 12 Gyr) consisting
typically of about 104-106 gravitationally bound stars. This makes them excellent
astrophysical laboratories to study stellar evolution, ...
Sharma, Ravi Kumar(Indian Institute of Astrophysics, 2023-11)
The ΛCDM model is the most successful model of cosmology to fit most of the cosmological observations, yet a few discrepancies exist. There is a 4σ to 5σ mismatch in determining the Universe’s current expansion rate from ...
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 ...