Zobrazeno 1 - 10
of 238
pro vyhledávání: '"Iqbal Naseer"'
We conducted a multi-wavelength analysis of the blazar Mrk\,501, utilizing observations from \emph{Astro}Sat (SXT, LAXPC), \emph{Swift-UVOT}, and \emph{Fermi-LAT} during the period August 15, 2016 to March 27, 2022. The resulting multi-wavelength lig
Externí odkaz:
http://arxiv.org/abs/2411.00592
We conducted a comprehensive temporal and spectral study of the FSRQ PKS 0805-07 by using the broadband observations from the Fermi-LAT and Swift-XRT/UVOT instruments over the period MJD 54684-60264. The 3-day binned $\gamma$-ray light curve during t
Externí odkaz:
http://arxiv.org/abs/2410.23181
In this work, we provide a detailed analysis of the broadband temporal and spectral properties of the blazar Ton\,599 by using the observations from \emph{Fermi}-LAT and \emph{Swift}-XRT/UVOT telescopes, during its brightest $\gamma$-ray flaring. The
Externí odkaz:
http://arxiv.org/abs/2403.00572
Since its discovery in 1992, GRS 1915+105 has been among the brightest sources in the X-ray sky. However, in early 2018, it dimmed significantly and has stayed in this faint state ever since. We report on AstroSat and NuSTAR observation of GRS 1915+1
Externí odkaz:
http://arxiv.org/abs/2402.06569
The recent detection of very high energy (VHE) emissions from flat spectrum radio quasars (FSRQs) at high redshifts has revealed that the universe is more transparent to VHE $\gamma$-rays than it was expected. It has also questioned the plausible VHE
Externí odkaz:
http://arxiv.org/abs/2312.05591
Autor:
Manzoor, Aaqib, Sahayanathan, Sunder, Shah, Zahir, Bhattacharyya, Subir, Iqbal, Naseer, Malik, Zahoor
The availability of simultaneous X-ray and Very High Energy (VHE) observations of blazars helps to identify the plausible radiative contributors to the VHE emission. Under leptonic scenario, the VHE emission from BL Lacs are attributed to the synchro
Externí odkaz:
http://arxiv.org/abs/2308.09470
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 Swift-UVOT. The $2$-day bin $\gamma$-ray lightcurve in the 2014-2017 acti
Externí odkaz:
http://arxiv.org/abs/2206.04441
The attenuation of very high energy (VHE) photons by the extragalactic background light (EBL) prevents the observation of high redshift flat spectrum radio quasars (FSRQs). However, the correlation of VHE spectral index with source redshift suggests
Externí odkaz:
http://arxiv.org/abs/2204.03229
Publikováno v:
Phys. Scr. 98 (2023) 065019
We exploit a new theory of gravity proposed by Finzi, which gives stronger interaction at large scales, to study the thermodynamic description of galaxy clusters. We employ a statistical model to deduce various thermodynamics equations of state. In a
Externí odkaz:
http://arxiv.org/abs/2203.17237
Publikováno v:
In Journal of High Energy Astrophysics November 2024 44:393-409
