124 citations · 164 across the 17 of their papers we have counts for
19 papers
Post-perihelion Photometric and Spectroscopic Monitoring of the Interstellar Comet 3I/ATLAS
Goldy Ahuja, Shashikiran Ganesh, K. Aravind +12
The third interstellar object, comet 3I/ATLAS, was observed using various Indian telescopes during its post-perihelion evolution. We carried out imaging and spectroscopic observati…
Unveiling the Nature of C/2023 A3 (Tsuchinshan-ATLAS): A Multi-Technique Observational Approach
Goldy Ahuja, Shashikiran Ganesh, Aravind Krishnakumar +3
Comet C/2023 A3 (Tsuchinshan-ATLAS) is a non-periodic dynamically new Oort cloud comet that was discovered independently by Purple Mountain Observatory in China and Asteroid Terres…
DHARA: Data Handling and Automated Reduction pipeline for AIMPOL
Namita Uppal, Shashikiran Ganesh, Santosh Joshi +3
We present an automated data-reduction and analysis for optical linear polarimetric data obtained from a dual-beam polarimeter. The pipeline is optimized for observations acquired…
Effect of different Non-Gravitational accelerations on the trajectory of Interstellar Comet 3I/ATLAS
Goldy Ahuja, Shashikiran Ganesh
Comet C/2025 N1 or 3I/ATLAS is the third confirmed interstellar object. It has passed perihelion on 2025 October 29, and is currently on a path to leave the solar system. During it…
Dynamical simulation of the Interstellar Comet 3I/ATLAS
Goldy Ahuja, Shashikiran Ganesh
Comet 3I/ATLAS, also known as C/2025 N1, was discovered on 2025 July 1 UT by NASA Asteroid Terrestrial-impact Last Alert System (ATLAS), with a v 58 kms. T…
A summary of instruments proposed for observing pulsating variables from the Mt. Abu Observatory
Anwesh Kumar Mishra, Deekshya Roy Sarkar, Prachi Prajapati +3
Pulsating variables play a significant role in shaping modern astronomy. Presently it is an exciting era in observational study of variable stars owing to surveys like OGLE and TES…
A chemodynamical study of -process-enhanced stars
Pallavi Saraf, Thirupathi Sivarani, Carlos Allende Prieto +2
The -process enrichment in the Galaxy still remains elusive with regard to its nucleosynthesis conditions and the astrophysical sites where it occurs. As part of ongoing efforts…
Long-term monitoring of a dynamically new comet C/2020 V2 (ZTF)
Goldy Ahuja, K. Aravind, Shashikiran Ganesh +5
Comet C/2020 V2 (ZTF) is categorized as a dynamically new long-period comet, making its first approach to the inner Solar system. We have observed this comet for around 32 months (…
Wide-field Polarization Imaging and Numerical Modeling of the Coma and Tail of Comet C/2023 A3 (Tsuchinshan-ATLAS)
Mirza Arnaut, Christian Wöhler, Pritish Halder +3
Imaging polarimetry enables the spatially resolved investigation of cometary dust properties across different morphological structures. While cometary comae have been studied thoro…
Linear polarization study of open clusters towards the anticenter direction: Signature of the spiral arms
Namita Uppal, Shashikiran Ganesh, Vincent Pelgrims +2
Our objective is to investigate the distribution of dust and associated large-scale structures of the Galaxy using optical linear polarization measurements of various open clusters…
Curve of Growth Analysis of SZ Lyn
Janaka Adassuriya, Shashikiran Ganesh, Peter de Cat +2
We present one high-resolution and a time series of 561 low-resolution follow-up spectroscopic observations of SZ Lyn. It is a high-amplitude Delta Scuti-type pulsating star in a b…
Foreground Dust Properties towards the Cluster NGC 7380
Sadhana Singh, Jeewan C. Pandey, Thiem Hoang +4
Using starlight polarization, we present the properties of foreground dust towards cluster NGC 7380 embedded in H{\sc ii} region Sh 2-142. Observations of starlight polarization ar…
Optical spectroscopy of comets using Hanle Echelle Spectrograph (HESP)
K Aravind, Kumar Venkataramani, Shashikiran Ganesh +5
Observing the vibrational/rotational lines in a comet's optical spectrum requires high-resolution spectroscopy, as they are otherwise seen as a blended feature. To achieve this, we…
Long-term spectroscopic monitoring of comet 46P/Wirtanen
K. Aravind, Kumar Venkataramani, Shashikiran Ganesh +2
Jupiter Family Comets (JFCs), having orbital period less than 20 years, provide us with an opportunity to observe their activity and analyse the homogeneity in their coma compositi…
Optical spectroscopy of comets
K. Aravind, Shashikiran Ganesh
Comets are pristine remnants of the Solar system, composed of dust and ice. They remain inactive and undetectable for most of their orbit due to low temperatures. However, as they…
Optical polarisation study of Galactic Open clusters
Namita Uppal, Shashikiran Ganesh, Santosh Joshi +3
Dust is a ubiquitous component in our Galaxy. It accounts for only mass of the ISM but still is an essential part of the Galaxy. It affects our view of the Galaxy by obscurin…
Warp and flare of the old Galactic disc as traced by the red clump stars
Namita Uppal, Shashikiran Ganesh, Mathias Schultheis
Our study aims to investigate the outer disc structure of the Milky Way galaxy using the red clump (RC) stars. We analysed the distribution of the largest sample of RC stars to dat…
Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters
Lankeswar Dey, M. J. Valtonen, A. Gopakumar +5
Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show…
Lately Exposed Amorphous Water Ice on Comet 49P/Arend-Rigaux
B. Sivaraman, V. Venkataraman, A. Kalyaan +2
Comet 49P/ Arend-Rigaux, thought to be a low activity comet since the 1980's was found to be active in its recent apparitions. Recent analysis of the data obtained from Spitzer obs…