activity
20092026
most citedA ~4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304?

88 citations · 1.2k across the 44 of their papers we have counts for

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Showing 2017Show all

5 papers · 1 filter

astro-ph.HE2017★ 7 cited

Multi-Band Intra-Night Optical Variability of BL Lacertae

Haritma Gaur, Alok C. Gupta, R. Bachev +5

We monitored BL Lacertae frequently during 2014 - 2016 when it was generally in a high state. We searched for intra-day variability for 43 nights using quasi-simultaneous measureme…

astro-ph.HE2017★ 21 cited

The Hard X-ray emission of the blazar PKS 2155--304

Haritma Gaur, Liang Chen, R. Misra +4

The synchrotron peak of the X-ray bright High Energy Peaked Blazar (HBL) PKS 2155304 occurs in the UV-EUV region and hence its X-ray emission (0.6--10 keV) lies mostly in the fa…

astro-ph.HE2017★ 23 cited

Signature of Inverse Compton emission from blazars

Haritma Gaur, P. Mohan, Alicja Wierzcholska +1

Blazars are classified into high, intermediate and low energy peaked sources based on the location of their synchrotron peak. This lies in infra-red/optical to ultra-violet bands f…

astro-ph.HE2017★ 46 cited

Multi-wavelength temporal and spectral variability of the blazar OJ 287 during and after the December 2015 flare: a major accretion disc contribution

P. Kushwaha, A. C. Gupta, P. J. Wiita +33

We present a multi-wavelength spectral and temporal analysis of the blazar OJ 287 during its recent activity between December 2015 -- May 2016, showing strong variability in the ne…

astro-ph.HE2017★ 42 cited

A peculiar multi-wavelength flare in the Blazar 3C 454.3

Alok C. Gupta, Arun Mangalam, Paul J. Wiita +20

The blazar 3C454.3 exhibited a strong flare seen in gamma-rays, X-rays, and optical/NIR bands during 3--12 December 2009. Emission in the V and J bands rose more gradually than did…