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Abstract Book Table of contents Speakers Title Page No. Saturday, 20 February 2021 Awards Session [Chairperson: Divya Oberoi] 6 Vainu Bappu Gold Medal Award Lecture Shirharsh Tendulkar 6 Understanding Fast Radio Bursts ASI Laxminarayana & Nagalaxmi Modali Award Lecture Poonam Chandra 6 Lives of massive stars: exploring the aspects of magnetism ASI Zubin Kembhavi Award Lecture 1 Vivek Monteiro Universalizing the Universe, with Daytime Astronomy and the People's Science 7 Movement ASI Zubin Kembhavi Award Lecture 2 Samir Dhurde 7 Organised Outreach that reaches - the mantra of IUCAA SciPOP Stars, ISM and the Galaxy I [Chairperson: Manash Samal] 8 Jeewan Pandey Colliding stellar winds in Wolf-Rayet binaries (I) 8 Vipin Kumar Optical and near-infrared spectroscopy studies of a very slow Nova V2891 Cyg 8 Tirthendu Sinha Pre-main sequence variables in young open clusters 9 Sadhana Singh A multi-band linear polarimetric study toward the cluster NGC 2345 9 The Analysis of Maser Source 2masx J04183258+5326027 in the Physical Harmeen Kaur 10 Environment of Young Open Clusters S208 and WAT 01 Instrumentation and Techniques I [Chairperson: S. Seetha] 11 V Girish Five years of AstroSat (I) 11 Creating a Large Optical-NIR Observing Facility in India: Challenges and Padmakar Parihar 11 Solutions (I) Srinath Reddy Patti Optical Fourier Transform and its application in low latency LIGO data analysis 12 Feasibility study of Duty cycle for MACE gamma-ray Telescope under partial Mani Khurana 12 Moonlit. Extragalactic Astronomy I [Chairperson: Nissim Kanekar] 13 Neeraj Gupta MALS early science: evolution of cold gas in galaxies (I) 13 Main Pal X-Ray/UV view of an NLS1 NGC 4748 13 N. Ganesh Dynamical Modelling of Spiral Arms in Low Surface Brightness galaxies 13 Sanna Gulati Multiwavelength studies of active galaxies NGC 1275 and Pictor A 14 A radio polarization study of III Zw 2 revealing a composite jet and wind Silpa Sasikumar 14 outflow Stars, ISM and the Galaxy II [Chairperson: K. Indulekha] 15 Aruna Goswami Metal-poor stars and Galactic chemical enrichment (I) 15 Swastik Chowbay Host-star Metallicity of Directly Imaged Planets 15 Gamma-Ray and Radio Background Constraints on Cosmic Rays in Milky Way Manami Roy 15 Circumgalactic Medium Roll of Polycyclic Aromatic Hydrocarbons on the Cosmic-Ray ionization rate in Gargi Shaw 16 the Galaxy Supriyo Ghosh Characterisation of cool giants from low-resolution near-infrared spectra 16 Instrumentation and Techniques II [Chairperson: Bhal Chandra Joshi] 18 Subhadeep De Optical Atomic Clocks to Probe Fundamental Science(I) 18 Radhika Dharmadhikari Phasing Segmented Primary Mirror using the Dispersed Fringe Technique 19 Observations of solar activities at low radio frequencies by CALLISTO at Kushagra Upadhyay 19 USO/PRL. Bela Dixit L-band Aperture Array Beamformer: Prototype Implementation and Testing 19 Harsha Avinash Tanti Update on the IIT Indore Radio Interferometer (IIRI) 20 Upgrading an old 50cm telescope for the robotic operation: The Current Status Dorje Angchuk 21 and the Plan for the Future. Extragalactic Astronomy II [Chairperson: Yogesh Wadadekar] 22 Smriti Mahajan An insight into multi-wavelength star formation rates (I) 22 Optical Identification and Radio Source Counts in the Saraswati Supercluster Shishir Sankhyayan 22 Region Abhisek Mohapatra Physical conditions and redshift evolution of low-z CIII absorbers 23 Small Telescope Big Dreams: An effort to find kilonova with GROWTH-India Harsh Kumar 23 Telescope Of Harbingers and Higher Modes: Improved gravitational-wave early-warning Shasvath Kapadia 24 of compact binary mergers Sunday, 21 February 2021 Public Lecture by G. Srinivasan - Of Stars and Singularities 25 Plenary Session 1 (Transient Astrophysical Phenomena) [Chairperson: G. C. Anupama] 26 Nayantara Gupta Transient Astrophysical Phenomena 26 Transient phenomena in radio bands - critical insights into lives and deaths of Poonam Chandra 26 massive stars Amit Shukla Spinning black hole powers jet by magnetic flux 26 Thesis Session I [Chairperson: Tushar Prabhu] 27 Prantika Bhowmik Data Constrained Models for Solar Activity Predictions 27 Anshu Kumari Radio Polarimetric Imaging of the Solar Corona at Low Frequencies 27 Statistical estimation of source properties for indirect imaging methods in Ajay Vibhute 28 Astronomy Avrajit Bandyopadhyay Study of Milky Way Halo stars and connection to globular clusters 28 Sindhu Pandey Multiwavelength study of old open clusters: NGC 188 and M67 29 Sandeep Kumar Kataria The Formation and Evolution of Bars, and its impact on Galaxy Dynamics 30 Sun and the Solar System I [Chairperson: Piyali Chatterjee] 31 Nishant Kumar Singh Solar Magnetic Fields on Large and Small Scales(I) 31 Study of seismic emission in sunspots associated with Lorentz force changes Hirdesh Kumar 31 accompanying major solar flares Subsurface Flow Structures and Dynamics Underneath the Flaring and Ram Ajor Maurya 32 Quiescent Regions Abhinav Prasad Role of Heating cooling imbalance in Non-Adiabatic solar coronal loops 32 Vasantharaju N. Revisit of Magnetic Imprints of Solar Flares: An Observational Study 33 Stars, ISM and the Galaxy III [Chairperson: Bhaswati Mookerjea] 34 Manoneeta Investigations of magnetar flares and their implications (I) 34 Chakraborty Shyam Sundar Wide-band Timing of Millisecond Pulsars with GMRT 34 Gangadhara R T The Coherent Radio Emission Mechanism of Pulsars 35 Ashwin Devaraj NuSTAR view of the cyclotron line source, XTE J1946+274 35 Study of recent outburst in the Be/X-ray binary RX J0209.6−7427 with Jayashree Roy 36 AstroSat: a new ULX pulsar in the Magellanic Bridge? Extragalactic Astronomy III [Chairperson: Ruta Kale] 37 Investigating Interstellar Dust Grains through Correlation Studies in the Rupjyoti Gogoi 37 Magellanic Clouds (I) Abinaya O O Gaia view of a stellar sub-structure in front of the Small Magellanic Cloud 37 Souradeep The recent formation history of Andromeda (M31) revealed from Planetary 38 Bhattacharya Nebulae A pilot study to determine halo spin and concentration for the galaxy UGC Sioree Ansar 38 5288 using simulations Neeraj Kumari X-ray and UV/optical variabilties in Mrk 509 39 Monday, 22 February 2021 Plenary Session 2 (Sun and Heliosphere) [Chairperson: P. Sreekumar] 40 K. Sankarasubramanian Sun and Heliosphere: Remote Sensing with Aditya-L1 40 Dibyendu Chakrabarty Why are in-situ measurements from Aditya-L1 important? 40 Bidya Binay Karak Recent Developments in the Babcock-Leighton Solar Dynamo Theory 41 Thesis Session II [Chairperson: Dipankar Banerjee] 42 Justice Oak Best Thesis Award Presentation – II Panini Singam 42 Design and development of Multilayer mirrors for astronomical applications Chayan Mondal Multi-wavelength study of star formation in nearby galaxies 42 Dipanweeta Cosmic evolution of black holes and the $M_{\bullet}-\sigma$ relation 43 Bhattacharyya Rubinur Khatun A Radio and Ultraviolet Study of Dual Nuclei in Galaxies 44 Temporal and Spectral Characteristics of Active Galactic Nuclei in X-rays using Priyanka Rani 44 NuSTAR Ranadeep Sarkar Solar Origin of Space Weather 45 Sun and the Solar System II [Chairperson: Shyama Narendranath] 46 Shashikiran Ganesh Minor bodies and their composition (I) 46 Vishal Goyal Effects of size of sinking iron-blobs on lunar core formation 46 Sana Ahmed Modelling the atmosphere of comets with different volatile compositions 47 Ritesh Kumar Mishra Evidence of multiple episodes of superflares during the birth of Our Sun 47 Soft X-ray spectroscopy of the quiet solar corona and elemental composition Biswajit Mondal 48 with Solar X-ray Monitor (XSM) onboard Chandrayaan-2 Stars, ISM and the Galaxy IV [Chairperson: Jeewan Pandey] 49 Bharat Kumar Yerra Evolution of Lithium in low-mass stars: an observational perspective (I) 49 Period Variations in Active Flaring Binary BX Tri - Magnetic Activity Cycle or Shantipriya Devarapalli 49 Tertiary Companion? Period-luminosity and period-radius relations for MESA-computed BL Her Susmita Das 50 models Detection of mHz frequency break in weak low/hard state of GX 339-4 using Nazma Husain 50 AstroSat data Anusha R Identification of new Classical Ae stars in the Galaxy using LAMOST DR5 50 General Relativity and Cosmology I [Chairperson: Tirthankar Roy Choudhury] 52 Sriramkumar L. Signatures of enhanced scalar power on small scales (I) 52 Shikhar Mittal Lyman-α coupling and heating at Cosmic Dawn 52 Cosmic recombination history in light of EDGES measurements of the cosmic Aritra Kundu 52 dawn 21-cm signal First multi-redshift limits on post-Epoch of Reionization (post-EoR) 21 cm Arnab Chakraborty 53 signal from z = 1.96 - 3.58 using uGMRT Constraints on the non-minimal coupling of Electromagnetic fields from Susmita Jana 54 astrophysical observations Constraints on the variation of fine structure constant from joint SPT-SZ and Kamal Bora 54 XMM-Newton observations Tuesday, 23 February 2021 Plenary Session 3 (Star formation, Galaxies and ISM) [Chairperson: Annapurni Subramaniam] 55 Kanak Saha AstroSat detection of Lyman continuum photons from a galaxy at z=1.42 55 Liton Majumdar From Molecular Clouds to Planetary Systems: A new era of ALMA and JWST 55 Sarita Vig Star Formation and its effect on the surrounding interstellar medium 56 Sun and the Solar System III [Chairperson: Abhishek Kumar Srivastava] 57 Girjesh R Gupta Heating of small-scale loops by solar UV bursts (I) 57 Vishal Upendran Quiet sun coronal heating by nanoflares 57 Estimating plasma parameters of coronal mass ejections at higher coronal Devojyoti Kansabanik 57 heights using high fidelity low-frequency
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