23rd Feb 2021

Tuesday, 23 February 2021
Time: 11:15 – 12:45
Sun and the Solar System III [Chairperson: Abhishek Kumar Srivastava]
Speaker Title Time in Minutes
Girjesh R Gupta Heating of small-scale loops by solar UV bursts (I) 30
Vishal Upendran Quiet sun coronal heating by nanoflares 15
Devojyoti Kansabanik Estimating plasma parameters of coronal mass ejections at higher coronal heights using high fidelity low-frequency radio images 15
Sindhuja G. A Study of the Observational Properties of Coronal Mass Ejection Flux Ropes near the Sun 15
Aditya Priyadarshi Implementation of machine learning for analysis and extraction of solar filaments from the hand-drawn KoSO data 15


Tuesday, 23 February 2021
Time: 11:15 – 12:45
Extragalactic Astronomy IV [Chairperson: Abhirup Datta]
Speaker Title Time in Minutes
Nagendra Kumar Wind outflow region in thin accretion disk in LLAGNs, as a favourable site for recombination line 15
Abhijit Kayal AstroSat/LAXPC hard X-ray observations of Compton-thick AGN 15
Vikram Khaire Searching for the Imprints of AGN Feedback on the Lyman-alpha Forest 15
Labani Mallick Discovery of soft and hard X-ray time lags in extremely low-mass active galactic nuclei 15
Yogesh Wadadekar Teaching machines to study galaxies 15
Sourav Palit Monte Carlo study of Earth's Albedo response to Prompt GRB observations in X-ray 15


Tuesday, 23 February 2021
Time: 11:15 – 12:45
Stars, ISM and the Galaxy V [Chairperson: Ranjeev Misra]
Speaker Title Time in Minutes
Prerna Rana A geometric origin for temporal properties of black hole systems 15
Pallavi Bhat Magnetic field generation in closed and open domains 15
Ankita Bera Primordial magnetic fields during the cosmic dawn in light of EDGES 21-cm signal 15
Atanu Koley The magnetic field in dense photodissociation region of DR21 15
Suman Bala
A possible physical explanation of the observed anharmonic ratio between the cyclotron line energies of Cep X-4 15
Akash Garg Modelling the energy dependent fractional rms and time lags in MAXI J1535-571 as observed by AstroSat 15


Tuesday, 23 February 2021
Time:13:30 – 15:00
Sun and the Solar System IV [Chairperson: K. Sankarasubramanian]
Speaker Title Time in Minutes
Durgesh Tripathi A unified scenario for the heating of the corona in quiet Sun, coronal holes and formation of Solar Wind 15
Bhuwan Joshi A low intensity, long-duration solar eruptive flare and associated type-I solar radio storm: SDO and PRL-CALLISTO observations 15
Pooja Devi
Variation of chromospheric features as a function of latitude and time using Ca-K spectroheliograms for solar cycles 15 – 23 15
Souvik Roy Magnetohydrodynamical Understanding of the Interactions Between Coronal Mass Ejections and Earth's Magnetosphere 15
Arghyadeep Paul Solar wind modelling and its impacts on planetary magnetospheres 15
Muthu Priyal Periodic and Quasi-Periodic Variations in the Ca K Index During the 20th Century Using Kodaikanal Data 15


Tuesday, 23 February 2021
Time:13:30 – 15:00
Extragalactic Astronomy V [Chairperson: Hum Chand]
Speaker Title Time in Minutes
Debbijoy Bhattacharya Multi-band study of different flaring and low-activity states of blazar 4C+21.35 15
Gaurav Waratkar
The Search for Fast Transients with AstroSat-CZTI 15
Vineet Ojha Comparative intranight optical variability study of radio-loud narrow-line Seyfert 1 galaxies with and without radio jets 15
Aditi Agarwal
Multi-band behaviour of the TeV blazar PG 1553+113 in optical range on diverse timescales 15
Pankaj Kushwaha
Deciphering the Nature of the Re-emerged Broadband Emission seen during the 2020 Multi-wavelength Activity of Blazar OJ 287 15
Arkadipta Sarkar Origin of multi-waveband flares in 3C 454.3 15


Tuesday, 23 February 2021
Time: 13:30 – 15:15
General Relativity and Cosmology II [Chairperson: Harvinder Jassal]
Speaker Title Time in Minutes
A Gopakumar Modeling gravitational waves from black hole binaries in non-circular orbits (I) 30
Indranil Chattopadhyay Particle production in accretion discs around black holes (I) 30
Bhaskar Biswas GW190814: On the properties of the secondary component of the binary 15
Nirban Bose A model-independent phenomenological constraints on the eccentricity for binary black hole systems 15