57 citations · 78 across the 11 of their papers we have counts for
12 papers
Low-Redshift Interlopers in the SDSS DR16 Quasar Catalogue
Vivek Kumar Jha, Harikumar N, Yogesh Wadadekar
High-redshift quasars () are crucial for studying early black hole growth and reionisation. SDSS Data Release 16 catalogues 655 such sources with multiple redshift estimators.…
Wild behaviour near the finish line: the Type Ibn SN 2020able and its stratified environment
L. Tartaglia, E. Cappellaro, G. Valerin +29
We present spectrophotometric observations of the Type Ibn supernova SN~2020able, along with a comprehensive analysis and modelling of its evolution. The transient occurred in SDSS…
Probing jet-induced optical variability across timescales in radio-loud NLSy1 galaxies
Vivek Kumar Jha, Anshul Kumar Sharma, Madhu Sudan +1
We investigate optical variability across multiple timescales in a sample of radio-loud narrow-line Seyfert~1 (RL-NLSy1) galaxies, including -ray detected, -ray undetected, a…
Do Low-Mass, Low-Luminosity AGNs Deviate from the Quasar Main Sequence?
Himanshu Sharma, Vivek Kumar Jha, Hum Chand +1
We present a comprehensive spectroscopic and variability-based characterisation of a sample of low-luminosity active galactic nuclei (AGNs) hosting low mass black holes, identified…
Exploring the Origins of Optical Variability in AGNs: Correlations with Black Hole Properties, X-ray, and Radio Emission
Vivek Kumar Jha, Debbijoy Bhattacharya, Hum Chand
We study the optical variability characteristics of Active Galactic Nuclei (AGN) from the Swift Burst Alert Telescope (BAT) AGN catalogue by utilising approximately five years of o…
IndicEval-XL: Bridging Linguistic Diversity in Code Generation Across Indic Languages
Ujjwal Singh, Aditi Sharma, Nikhil Gupta +2
Large Language Models (LLMs) have demonstrated remarkable capabilities in code generation from natural language prompts, revolutionizing software development workflows. As we advan…
Investigating the Nature and Structure of Inner Regions in Active Galactic Nuclei
Vivek Kumar Jha
The innermost regions of Active Galactic Nuclei (AGN) are critical for understanding galaxy evolution and the dynamics of matter near a Supermassive Black Hole (SMBH). Yet, due to…
Exploring the AGN Accretion Disks using Continuum Reverberation Mapping
Vivek Kumar Jha, Ravi Joshi, Jayesh Saraswat +3
In the innermost regions of Active Galactic Nuclei (AGN), matter is understood to be flowing onto the Supermassive black hole (SMBH), which forms an accretion disk. This disk is re…
Photometric and spectroscopic analysis of the Type II SN 2020jfo with a short plateau
B. Ailawadhi, R. Dastidar, K. Misra +34
We present high-cadence photometric and spectroscopic observations of SN~2020jfo in ultraviolet and optical/near-infrared bands starting from to days after the…
Evidence of jet induced optical microvariability in radio-loud Narrow Line Seyfert 1 Galaxies
Vineet Ojha, Vivek Kumar Jha, Hum Chand +1
To quantify the role of radio jets for Intra-Night Optical Variability (INOV) in Radio-Loud Narrow-Line Seyfert 1 (RLNLSy1) galaxies, we report the first systematic comparative INO…
A comparative study of the physical properties for a representative sample of Narrow and Broad-line Seyfert galaxies
Vivek Kumar Jha, Hum Chand, Vineet Ojha +2
We present a comparative study of the physical properties of a homogeneous sample of 144 Narrow line Seyfert 1 (NLSy1) and 117 Broad-line Seyfert 1 (BLSy1) galaxies. These two samp…
Accretion Disk Sizes from Continuum Reverberation Mapping of AGN Selected from the ZTF Survey
Vivek Kumar Jha, Ravi Joshi, Hum Chand +4
We present the accretion disk size estimates for a sample of 19 active galactic nuclei (AGN) using the optical , , and band light curves obtained from the Zwicky Transien…