6 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…
The Detection of Teraelectronvolt Radiation from a Flat Spectrum Radio Quasar
Vaidehi S. Paliya, Markus Bottcher, Kiran Wani +5
The very high-energy (VHE; 100 GeV) radiation carries the signatures of the matter-energy interaction in some of the most extreme astrophysical environments. Considering broad e…
Multi-wavelength analysis of FSRQ B2 1348+30B: Constraints on the jet power
Sajad Ahanger, Sunder Sahayanathan, Sitha K. Jagan +2
We present 14.5-year multi-wavelength analysis of flat-spectrum radio quasar B2 1348+30B using Swift-UVOT, Swift-XRT, and Fermi-LAT observations. In the gamma-ray band, the 3 day b…
Signature of hadronic emission in gamma-ray spectrum of B2 1308+326
Athar A. Dar, Zahir shah, Sunder Sahayanathan +3
The Flat Spectrum Radio Quasar (FSRQ) B2\,1308+326 was in its highest -ray flaring state during 60260-60310\,MJD. During this period, the source was detected in very high energ…
Deciphering the Multi-Wavelength Flares of the Most Distant Very High-Energy (>100 GeV) Gamma-ray Emitting Blazar
P N Naseef Mohammed, T. Aminabi, C. Baheeja +3
This study analyzes the multi-wavelength flaring activity of the distant flat spectrum radio quasar (FSRQ) OP 313 (z=0.997) during November 2023 to March 2024, using data from Ferm…