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20242026
most citedX-Ray Spectral Variability of the TeV HBL Blazar PG 1553+113 with XMM-Newton

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astro-ph.HE2025

Multi-band optical variability of the blazar OP 313 in the outburst state during 2024-2025

P. U. Devanand, Alok C. Gupta, Karan Dogra +2

We present the analysis results of flux and spectral variability of the blazar OP 313 across intra-night to short-term timescales using BVRI photometric data, gathered over 25 nigh…

astro-ph.HE2025

X-Ray Spectral Variability of Thirteen TeV High Energy Peaked Blazars with XMM-Newton

P. U. Devanand, Alok C. Gupta, V. Jithesh +2

We present a comprehensive study of the X-ray spectral variability observed in 13 TeV photon emitting high energy peaked BL Lacs(HBLs). These data come from 54 XMM-Newton EPIC-PN p…