50 citations · 357 across the 24 of their papers we have counts for
7 papers · 1 filter
Multi-band Optical Variability of the TeV Blazar PG 1553+113 in 2019
Vinit Dhiman, Alok C. Gupta, Sofia O. Kurtanidze +20
We report the flux and spectral variability of PG 1553+113 on intra-night (IDV) to short-term timescales using BVRI data collected over 91 nights from 28 February to 8 November 201…
Long Term Multi-band Near Infra-Red Variability of the Blazar OJ 287 during 2007--2021
Alok C. Gupta, Pankaj Kushwaha, L. Carrasco +9
We present the most extensive and well-sampled long-term multi-band near-infrared (NIR) temporal and spectral variability study of OJ 287, considered to be the best candidate binar…
X-ray Intraday Variability of the TeV Blazar PKS 2155-304 with Suzaku During 2005-2014
Zhongli Zhang, Alok C. Gupta, Haritma Gaur +5
We have examined 13 pointed observations of the TeV emitting high synchrotron peak blazar PKS 2155-304, taken by the Suzaku satellite throughout its operational period. We found th…
X-ray Intra-day Variability of the TeV Blazar Mrk 421 with Suzaku
Zhongli Zhang, Alok C. Gupta, Haritma Gaur +5
We present X-ray flux and spectral analyses of the three pointed Suzaku observations of the TeV high synchrotron peak blazar Mrk 421 taken throughout its complete operational durat…
A Study of the Merger History of the Galaxy Group HCG 62 Based on X-Ray Observations and SPH Simulations
Dan Hu, Haiguang Xu, Xi Kang +9
We choose the bright compact group HCG 62, which was found to exhibit both excess X-ray emission and high Fe abundance to the southwest of its core, as an example to study the impa…
Suzaku Observation of the High-Inclination Binary EXO 0748-676 in the Hard State
Zhongli Zhang, Soki Sakurai, Kazuo Makishima +4
Utilizing an archived Suzaku data acquired on 2007 December 25 for 46 ks, X-ray spectroscopic properties of the dipping and eclipsing low-mass X-ray binary EXO 0748676 were stud…