Parvathy, M(Indian Institute of Astrophysics, 2022-07)
Atmospheric turbulence degrades the image formed by ground-based telescopes. It
causes the image to be spread over a large area known as the seeing-disk in a typical
long exposure. In a short exposure, the image is spread ...
Jaini, Akhil(Indian Institute of Astrophysics, 2022-07)
The coming decade in astronomy focuses on large widefield imaging and spectroscopic
surveys. No widefield imaging facility extends to the UV region, which represents an
important window into a wide variety of astrophysical ...
Jain, Shubhangi(Indian Institute of Astrophysics, 2022-07)
The INSIST (Indian Spectroscopic and Imaging Space Telescope) is a UV-optical 1m class telescope expected to produce high quality imaging and moderate resolution spectra of astronomical sources. A DMD is an optical ...
Jadhav, Sujay Vijay(Indian Institute of Astrophysics, 2021-07)
The FUV (900-1800 Å) is the richest part of the spectrum in terms of emission lines – O VI (1032/1038 Å) and C IV (1548/1550 Å) from hot gas, C III (977 Å) and N III (1750 Å) from warm gas, and the Lyman and Werner bands ...
Sayuf, Shaik(Indian Institute of Astrophysics, 2021-07)
The outer atmosphere of the Sun is observed to be a very hot plasma medium. Since the frequency of
electromagnetic wave emission from a plasma medium depends on the electron number density, high
frequency radio waves ...
Manjunath, B(Indian Institute of Astrophysics, 2021-07)
Earth’s atmosphere is one of the significant factors affecting the quality of ground-based observations. For off-zenith observations with ground-based astronomical telescopes, the image size on the telescope's focal plane ...
Shubham Jankiram, Ghatul(Indian Institute of Astrophysics, 2021-07)
The ground-based stellar astronomy suffers from the atmospheric turbulence diminishing minute details in the images taken of celestial objects. Adaptive Optics is a tool that comes to the rescue of the astronomers who wish ...
Khan, Raveena(Indian Institute of Astrophysics, 2020-07)
Magnetic field aids in coupling between different layers of the solar atmosphere. The magnetic field information simultaneously at multiple heights is important to understand many physical processes like flares, coronal ...
Saraswathi Kalyani, S(Indian Institute of Astrophysics, 2020-07)
The outer atmosphere of the Sun is understood to be a very hot plasma medium. The
frequency of the electromagnetic emission from a hot plasma medium depends on its electron
density distribution. Since the electron density ...
Bandyopadhyay, Soumya(Indian Institute of Astrophysics, 2019-06)
Thirty meter telescope is one of the new class of extremely large telescopes which
have a segmented primary mirror of thirty meter of total aperture that consists of 492
hexagonal segments. Several error sources like ...
Pruthvi, Suryadevara(Indian Institute of Astrophysics, 2019-07)
Aditya-L1, India’s first mission with multiple science payloads is designed to study the solar
dynamics. Aditya-L1 includes multiple payloads, the significant one being the Visible Emission
Line Coronagraph (VELC). ...
Choudhary, Sarthak(Indian Institute of Astrophysics, 2019-06)
The outer most layer of the Sun, also called Corona, reaches temperatures as high as a few million
Kelvin much hotter than underlying photosphere and chromosphere. This phenomenon is
popularly known as coronal heating. ...
Madhu, Vishnu(Indian Institute of Astrophysics, 2019-06)
ADITYA-L1 will be India’s first space mission dedicated to solar studies. The Visible
Emission Line Coronagraph (VELC) is one of the prime payloads onboard ADITYA L1. VELC will perform simultaneous imaging, spectroscopy ...
Mathur, Harsh(Indian Institute of Astrophysics, 2019-06)
High time-cadence Spectro-Polarimetry allows the feasibility of studying magnetic field
evolution coupled with the plasma flows. Such a high cadence solar spectro-polarimetry if
developed will allow one to study magnetic ...
Bharat Chandra, P(Indian Institute of Astrophysics, 2019-06)
A pulsar is a highly magnetized rapidly rotating neutron star. Weighing more than our Sun, yet only about 20 km in diameter, these incredibly dense objects produce radio beams that sweep the sky like a lighthouse. Pulsars ...
Bane Kshitij, Suhas Trupti(Indian Institute of Astrophysics, 2019-06)
A pulsar is a highly magnetized rapidly rotating neutron star. Weighing more than our Sun, yet only about 20 km in diameter, these incredibly dense objects produce radio beams that sweep the sky like a lighthouse. Pulsars ...
Dharmadhikari, Radhika(Indian Institute of Astrophysics, 2020-07)
The segmented mirror technology is being extensively used these days in astronomical telescopes, in order to achieve higher resolution and sensitivity with lower manufacturing costs.
To make the segments work like a ...
Aritra Chakrabarty(Indian Institute of Astrophysics, 2016-07)
The H minus ions prevalent in the sub-photospheric level are found to have minimum opacity at around 1.63
m which makes this wavelength suitable for sub-photospheric observations . Some previous observations by Foukal ...
Souvik Bose(Indian Institute of Astrophysics, 2016-07)
The sun is very interesting particularly because it is very dynamic. The magnetic field plays a
major role in governing dynamics of the sun. Many interesting features like sunspots, flares,
prominences, and Coronal Mass ...
Pavankumar, K(Indian Institute of Astrophysics, 2016-07)
Imaging Polarimetry of Extended sources is not very common. This project entitled "Dual Beam Imaging Polarimeter" is an attempt to build one for the 1.3m telescope in Kavalur. The
Instrument will make use of the Wide field ...