activity
20212026
most citedMulti-wavelength study of blazar 4C +01.02 during its long-term flaring activity in 2014-2017

10 citations · 19 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.HE2026

Modelling the Time-variable Broadband Emission and Correlation Study of FSRQ S5 1044+71

Sajad Ahanger, Shah Zahir, Sunder Sahayanathan +3

We present a detailed temporal and spectral analysis of the blazar S5\,1044+71 using multi-wavelength data obtained from the \emph{Fermi}-LAT and Swift-XRT/UVOT telescopes. Applyin…

astro-ph.CO2025

The Fluctuation Theory, Critical Phenomena and Gravitational Clustering of Galaxies

M. S. Khan, M. H. Abdullah, Shah Zahir +2

We investigate the phenomenon of clustering of galaxies in an expanding universe by applying the fluctuation theory. We evaluate the fluctuation moments for the number of particles…

astro-ph.HE2025

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…

astro-ph.HE2022★ 10 cited

Multi-wavelength study of blazar 4C +01.02 during its long-term flaring activity in 2014-2017

Malik Zahoor, Shah Zahir, Sunder Sahayanathan +2

We conducted a detailed long-term spectral and temporal study of flat spectrum radio quasar 4C +01.02, by using the multi-wavelength observations from Fermi-LAT, Swift-XRT, and Swi…

astro-ph.HE2021★ 9 cited

Model-independent Redshift Estimation of BL Lac Objects through VHE Observations

Malik Zahoor, Sunder Sahayanathan, Shah Zahir +3

The very high energy (VHE) gamma-ray spectral indices of blazars show strong correlation with the source redshift. Absence of any such correlation in low energy gamma rays and X-ra…