5 citations · 6 across the 9 of their papers we have counts for
9 papers
The broadband spectral energy distribution of candidate neutrino blazars
Athira M Bharathan, C. S. Stalin, Markus Böttcher +3
Blazars, the jet dominated class of AGN comprising flat spectrum radio quasars (FSRQs) and BL Lac objects (BL Lacs) are now increasingly identified as potential sources of high ene…
Clues on the X-ray emission mechanism of blazars PKS 2155304 and 3C 454.3 through polarization studies
Athira M Bharathan, C S Stalin, Sunder Sahayanathan +1
X-ray polarization measurable with the imaging X-ray Polarimetry Explorer (\textit{IXPE}) could constrain the long-debated leptonic versus hadronic origin of the high-energy compon…
Kinematic Study of Molecular Gas in Cometary Globule -- LBN 437
S. Aardra, Namitha Issac, Archana Soam +2
Bright-rimmed, cometary-shaped star-forming globules, associated with HII regions, are remnants of compressed molecular shells exposed to ultraviolet radiation from central OB-type…
Simultaneous X-ray and optical polarization observations of the blazar Mrk 421
Athira M. Bharathan, C. S. Stalin, S. Sahayanathan +7
We present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out u…
Detection of a new sample of Galactic White Dwarfs in the direction of the Small Magellanic Cloud
A. V. Sidharth, B. Shridharan, Blesson Mathew +7
In this study, we demonstrate the efficacy of the Ultraviolet Imaging Telescope (UVIT) in identifying and characterizing white dwarfs (WDs) within the Milky Way Galaxy. Leveraging…
Detection of high-frequency pulsation in WR 135: investigation of stellar wind dynamics
Subhajit Kar, Ramkrishna Das, Blesson Mathew +2
We report the detection of high-frequency pulsations in WR\,135 from short cadence (10\,minutes) optical photometric and spectroscopic time series surveys. The harmonics up to $6^{…
Multi-wavelength spectral modelling of the candidate neutrino blazar PKS 0735+178
Athira M Bharathan, C. S. Stalin, S. Sahayanathan +2
The BL Lac object PKS 0735+178 was in its historic -ray brightness state during December 2021. This period also coincides with the detection of a neutrino event IC211208A, which…
Investigation of the correlation between optical and -ray flux variation in the blazar Ton 599
Bhoomika Rajput, Amit Kumar Mandal, Ashwani Pandey +3
The correlation between optical and -ray flux variations in blazars reveals a complex behaviour. In this study, we present our analysis of the connection between changes in opti…
Detection of X-ray Polarization in the High Synchrotron Peaked Blazar 1ES 1959+650
Athira M. Bharathan, C. S. Stalin, Rwitika Chatterjee +4
We report the measurement of X-ray polarization in the high synchrotron peaked blazar 1ES 1959+650. Of the four epochsof observations from the {\it Imaging X-ray Polarimetry Explor…