53 citations · 902 across the 48 of their papers we have counts for
8 papers · 1 filter
Fast magnetic reconnection structures in Poynting-flux dominated jets
Luís H. S Kadowaki, Elisabete M. de Gouveia Dal Pino, Tania E. Medina Torrejon +2
The ubiquitous relativistic jet phenomena associated with black holes play a major role in high and very-high-energy (VHE) astrophysics. In particular, observations have demonstrat…
Multi-waveband quasi-periodic oscillations in the light curves of blazar CTA 102 during its 2016-2017 optical outburst
Arkadipta Sarkar, Pankaj Kushwaha, Alok C. Gupta +2
Quasi-periodic fluctuations in the light curves of blazars can provide insight into the underlying emission process. This type of flux modulation hints at periodic physical process…
Blazar OJ 287 After First VHE Activity: Tracking the Re-emergence of the HBL like Component in 2020
Pankaj Kushwaha, Main Pal, Nibedita Kalita +5
We report the re-emergence of a new broadband emission through a detailed and systematic study of the multi-wavelength spectral and temporal behavior of OJ 287 after its first-ever…
A Possible -ray Quasi-periodic Oscillation of 314 days in the Blazar OJ 287
Pankaj Kushwaha, Arkadipta Sarkar, Alok C. Gupta +3
We report the detection of a probable -ray quasi-periodic oscillation (QPO) of around 314 days in the monthly binned 0.1 -- 300 GeV -ray {\it Fermi}-LAT light curve of the we…
Short-term X-ray Variability during Different Activity Phases of Blazars S5 0716+714 and PKS 2155-304
Pankaj Kushwaha, Main Pal
We explored the statistical properties of short-term X-ray variability using long-exposure {\it XMM-Newton} data during high X-ray variability phases of blazars S5 0716+714 and PKS…
A hadronic emission model for black hole-disc impacts in the blazar OJ 287
J. C. Rodríguez-Ramírez, P. Kushwaha, E. M. de Gouveia Dal Pino +1
A super-massive black hole (SMBH) binary in the core of the blazar OJ 287 has been invoked in previous works to explain its observed optical flare quasi-periodicity. Following this…
Gamma-ray Emission Properties of Four Bright Fermi-LAT AGNs: Implications on Emission Processes
Pankaj Kushwaha, Atreyee Sinha, Ranjeev Misra +2
The X-ray, Ultraviolet, Optical emission from radio-quiet AGNs, black hole binaries, and other compact sources, in general, follow a lognormal flux distribution, a linear rms-flux…
A Multi-wavelength View of OJ 287 Activity in 2015-2017: Implications of Spectral Changes on Central-engine Models and MeV-GeV Emission Mechanism
Pankaj Kushwaha
A diverse range of peculiar properties across the domains of observation have made OJ 287 one of the best-explored BL Lac objects on the issues of relativistic jets and accretion p…