ASI 2018 Abstract Book

200 Pages·2012·1.51 MB·English

XXXVI Meeting of
Astronomical Society of India
Department of Astronomy,
Osmania University, Hyderabad
5 – 9 February 2018

Abstract Book
Table of Contents

Title Page No.
6th February 2018
Special Lecture - Parameswaran Ajith - Einstein’s Messengers 1

Parallel Session – Stars, ISM and the Galaxy I 2
Lokesh Dewangan - Observational Signatures of Cloud-Cloud Collision in the 2
Galactic Star-Forming Regions (I)
Manash Samal - Understanding star formation in filamentary clouds - a case 3
study on the G182.4+00.3 cloud
Veena - Understanding the structure, evolution and kinematics of the IRDC 4
G333.73+0.37
Jessy Jose - The youngest free-floating planets: A transformative survey of 5
nearby star forming regions with the novel W-band filter at CFHT-WIRCam
Mayank Narang - Are Exoplanet properties determined by the host star? 6

Parallel Session – Extragalactic Astronomy 1 7
Rupak Roy - The Nuclear-transients 7
Agniva Roychowdhury - Study of multi-band X-Ray Time Variability of Mrk 421 8
using ASTROSAT
Brajesh Kumar - Long term optical monitoring of the transitional Type Ic/BL-Ic 9
supernova ASASSN-16fp (SN 2016coi)
Prajval Shastri - Multi-wavelength Views of Accreting Supermassive Black Holes 9
using ASTROSAT
Pranjupriya Goswami - X-ray spectral curvature of high energy blazars with 10
NuSTAR observations
Bindu Rani - Wobbling jets in active super-massive black holes 10

Parallel Session – General Relativity and Cosmology I 11
Pravabati Chingangbam - Probing length and time scales of the EoR using 11
Minkowski Tensors (I)
Akash Kumar Patwa - On detecting EoR using drift scan data from MWA 11
Table of Contents

Shamik Ghosh - Current status of the radio dipole and its measurement 12
strategy with the SKA
Debanjan Sarkar - Modelling redshift-space distortion (RSD) in the post- 13
reionization HI 21-cm power spectrum
Dinesh Raut - Measuring the reionization 21cm fluctuations using clustering 14
wedges.

Parallel Session – Stars, ISM and the Galaxy II 15
Saurabh Sharma - Multi-wavelength studies of star forming regions(I) 15
Sonu Tabitha - Probing Early Phases of High Mass Stars with 6.7 GHz Methanol 16
Masers
Gourav Banerjee - Spectroscopic Studies of Galactic Field Be stars through 16
CaII and FeII emission lines
Avrajit Bandyopadhyay - Connection between Globular clusters and Galactic 17
halo
Gaurav Singh - Study of Blue Straggler Stars in Galactic Globular Cluster NGC 18
6656

Parallel Session – Extragalactic Astronomy II 19
Saumyadip Samui - Cosmic Ray driven outflows from high-z galaxies (I) 19
Dipanjan Mukherjee - Impact of relativistic jets from AGNs on their host 20
galaxies
Ramij Raja - Studying merging phenomena of massive clusters through multi- 21
wavelength study of MACSJ0417.5-1154
Ramya - Evolving perspectives on the formation and evolution of Giant Low 21
Surface Brightness galaxies
Naslim Neelamkodan - ALMA reveals molecular cloud N55 in the Large 22
Magellanic Cloud as a site of massive star formation

7th February 2018
Plenary Session 1 - TIME DOMAIN ASTRONOMY 23
Table of Contents

G. C. Anupama - Studies of Supernovae in the era of future large facilities 23
Biswajit Paul - X-ray timing from milliseconds to decades and time resolved 24
spectroscopy/polarimetry
Shabnam Iyyani - Gamma ray burst: A window to the extraordinary and 24
extreme Universe

Parallel Session – Stars, ISM and the Galaxy III 25
Sabyasachi Pal - Low frequency radio emission from extra-solar planets using 25
TIFR GMRT Sky Survey
Bhaswati Bhattacharya - Searching for pulsars with GMRT : Fermi-directed 26
search and GHRSS survey
Sushan Konar - The Nulling Pulsars : A statistical study 27
Mayur Bhaskar Shende - Formation of Episodic Jets from Black Hole Accretion 27
Disks
Manoneeta C - The peculiar bursting behavior of magnetars and its 28
implications
Shilpa Sarkar - Two-temperature flows around compact objects 29

Parallel Session – Extragalactic Astronomy III 30
Resmi Lekshmi - The Gamma Ray Burst from the first binary Neutron Star merger 30
(I)
Kuntal Misra - Merger ejecta in short gamma ray bursts 30
Debdutta Paul - Luminosity function of Gamma Ray Bursts 31
Muhammed Saleem - Short-GRB afterglows in coincidence with gravitational 32
waves from Binary Neutron Star mergers
Ruchika - The group environment in the Coma supercluster 32
Table of Contents

Parallel Session – General Relativity and Cosmology II 33
Tuhin Ghosh - Measurements of Degree-scale B-mode polarization with BICEP2, 33
Keck Array and Planck (I)
Kanhaiya Lal Pandey - Role of primordial black holes in SMBH formation at high 33
$z$
Lankeswar Dey - Constraining higher order gravitational wave back-reaction 34
in blazar OJ287 black hole binary
Subhabrata Majumdar - Cosmological Missing Baryons hidden in CGM 35
Prasanta Kumar Das - Fermionic dark matter and supernova SN1987A cooling 35

Parallel Session – Stars, ISM and the Galaxy IV 36
Anindita Mondal - Calculation of H and He emission line fluxes in Novae 36
spectra
Firoza Sutaria - UV studies of X-ray and optically bright SNRs 37
Barnali Das - Discovery of Electron Cyclotron MASER Emission from the 38
magnetic chemically peculiar star HD 133880
Subhajeet Karmakar - A Very Long and Hot X-ray Superflare on an RS CVn 39
type eclipsing binary SZ PSc
K. Sriram - Investigating the dynamical instability criterion for asynchronous 40
binary systems
Malu S. - Evidence of a tertiary component in Kepler contact binary K2 EPIC 41
2073314

Parallel Session - Instrumentation and Techniques I 42
Abhijit Chakraborty - How to achieve sub-1m/s precision Radial Velocity using 42
a Stabilized HR Spectrograph
Shashi Bushan Pandey - 4KX4K CCD Imager for the 3.6m DOT and first light 42
results
Archita Rai - Near-Infrared Imaging Spectro-Polarimeter (NISP) instrument for 43
PRL 2.5-m telescope.
Table of Contents

Kaushal Buch - Initial Developments in the Design and Implementation of FPA 44
Beamformer for the Expanded GMRT
Yogesh Wadadekar - GMRT Archive Processing Project 45

8th February 2018
Plenary Session 2 - SCIENCE WITH THE UPGRADED GMRT 46
Yashwant Gupta - The upgraded GMRT: Overview and Prospects for Pulsar 47
Studies
Ruta Kale - Clusters of galaxies with the upgraded GMRT 47
Nirupam Roy - Spectral line observations with the upgraded GMRT 48

Thesis presentations I 49
Rahul Kothari - On the Study of CMB Dipole Modulation and Its Relationship 49
with Spatial Inhomogeneity and Spacetime Noncommutativity
Visweshwar Ram Marthi - Towards detecting redshifted HI with the Ooty Wide 50
Field Array
Samir Choudhuri - Visibility-based Power Spectrum Estimation for Low- 51
Frequency Radio Interferometric Observations
Pragati Pradhan - Pulse Profile Studies and Hard X-Ray Properties of Neutron 52
Stars

Thesis presentations II 53
Tirtha Pratim Das - Study of noble gases in lunar exosphere using the CHACE- 53
MIP observation of Chandrayaan-1
Sowmya Krishnamurthy - Scattering polarization with Paschen--Back effect as 54
a tool to diagnose the magnetic structuring of the solar atmosphere
Krishna Kumar Pandey - Study of solar activity during solar cycles 21-23 55
Shubham Srivastav - Observational Studies of Low Redshift Supernovae 56
Table of Contents

Parallel Session - Sun and the Solar System I 57
Abhishek Srivastava - On Understanding New Heating Candidates for Sun's 57
Corona (I)
Dipankar Banerjee - On Long term study of the sun using Kodaikanal Digitized 57
data
Divya Oberoi - Solar radio astronomy at low radio frequencies: The dawn of a 58
new era
Rohit Sharma - Characterising weak low radio frequency emission from the Sun 59

Ayesha Maryam Mazarbhuiya - Polarimetric study of comet C/2015 V2 60
(Johnson) at low phase angle

Parallel Session - Extragalactic Astronomy IV 61
Dharam Vir Lal - Cluster and radio relic: A sharp view using upgraded GMRT 61
K. S. Dwarkanath - Discovery of radio relics in the outskirts of the low-mass 61
galaxy cluster Abell 168
Veeresh Singh - Discovery of radio relics in the outskirts of the low-mass galaxy 62
cluster Abell 168
Bhargav Vaidya - Non-thermal Emission and Polarisation from AGN Jets 62
Sitha K. Jagan - Interpretating the synchrotron spectral curvature of PKS 2155- 63
304
Sonkamble Satish Shripati - Metallicity enrichment in hot gas environments via 63
radio jet

Parallel Session - Instrumentation and Techniques II 64
Ajay Ratheesh - Astrosat Cadmium Zinc Telluride Imager as a Short GRB 64
Detector
Madhuri Siriprolu - Development and Studies on TPC GEM X-ray Polarimeter 65
Shiv Kumar Goyal - Supra Thermal & Energetic Particle Spectrometer (STEPS), 66
onboard Aditya-L1 mission
Table of Contents

Public Talk - Biman Nath - A dung beetle's view of the Milky Way 67

9th February 2018
Plenary Session 3 - GALAXIES AND THE IGM 68
Aseem Paranjape - Recent insights into dark halo assembly and implications 68
for galaxy evolution
Arunima Bannerjee - Origin of LSB galaxies: A dynamical study 69
Biman Nath - Galaxies and the intergalactic medium 69

Parallel Session – Sun and the Solar System II 70
Aveek Sarkar - Numerical Simulation of active region MHD oscillations and 70
coronal loop implosion
Dattaraj Dhuri - Prediction of solar flares from photospheric magnetic field 70
using machine learning
Jishnu Bhattacharya - Iterative inversion of synthetic travel times successful at 71
recovering sub-surface profiles of supergranular flows
Nishtha Sachdeva - Proxies for CME acceleration 71

K Sasikumar Raja - Turbulent density fluctuations and proton heating rate in 72
the solar wind from $9-20~R_{odot}$
Debi Prasad Choudhary - Flows along Super-Penumbral Fibrils of Sunspots 72

Parallel Session - Extragalactic Astronomy V 73
Smriti Mahajan - Blue spheroids: progenitors of spirals or passive ellipticals? 73
Kshitija Kelkar - Evolving galaxies in evolving environments 74
Kameswara Bharadwaj Mantha - A Tale of Two Galaxy Merger Identification 75
Techniques: Empirical and Theoretical Investigation of Close-Pairs and Tidal
Table of Contents

Features
Rubinur Khatun - Understanding the galaxy merger system with EVLA and UVIT 76
Niladri Paul - Halo model of HI galaxies and their scaling relations 76
Arun Kumar Diwakar - Very flat triaxial mass models of elliptical galaxies 77

Parallel Session - General Relativity and Cosmology III 78
Shilpa Kastha - Parametrized test of post-Newtonian multipolar structure of 78
compact binary merger
Mandar Patil - Can we use gravity to produce ultra-high energy cosmic rays 79
and neutrinos ?
Shantanu Desai - Limit on graviton mass from galaxy cluster Abell 1689 79
Shabbir Shaikh - Bayesian analysis of hemispherical asymmetry observed in 80
CMB
Vipin Sudevan - A Measurement of CMB Angular Power Spectrum from Planck 81
& Wmap Observations

Poster Presentations - Sun and Solar System 82

Poster Presentations - Stars, ISM and the Galaxy 103

Poster Presentations - Extragalactic Astronomy 131

Poster Presentations - Instrumentation and Techniques 168

Poster Presentations - General Relativity and Cosmology 182

Poster Presentations - Other 191
ASI2018 – Abstract Book 1

Tuesday, 6th February 2018

Tuesday, February 6th , 2018
Special Lecture -Parameswaran Ajith - Einstein’s Messengers
Time: 11:30 - 12:30 Venue: IICT Auditorium

Special Lecture Parameswaran Ajith Invited
Einstein's messengers
Recent gravitational-wave observations by LIGO and Virgo not only confirm the century-old
prediction of Einstein, but also herald the beginning of a new branch of astronomy. While the binary
black hole observations allow us to test the predictions of Einstein’s theory in the regime of extreme
gravity and to study the physics and astrophysics of black holes, the binary neutron star observation
has announced the dawn of multi messenger astronomy. Based on the observed rate of these
events, we expect a large number of binary mergers to be observed in the near future, along with
other possible sources. This talk will summarize the current status of gravitational-wave observations,
what we learned from them, and prospects for the near future.