273 citations · 2.2k across the 98 of their papers we have counts for
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Origin of the double-peaked narrow emission-lines in the optical spectra of X-shaped Radio Galaxies
Ghosh Prajnadipt, Ravi Joshi, Xiaolong Yang +13
We investigate X-shaped radio galaxies (XRGs) with optical double-peaked narrow emission lines (DPNELs) as potential hosts of dual or binary supermassive black holes (SMBHs). Using…
A sample of 25 radio galaxies with highly unusual radio morphologies, selected from the LoTSS-DR2 survey at 144 MHz
Gopal-Krishna, Dusmanta Patra, Ravi Joshi
From a careful visual scrutiny of the radio structures of a well-defined sample of 2428 sources in the LoTSS DR2 survey made at 144 MHz with a 6" beam, we have selected a subset of…
In-situ acceleration of radio-emitting particles in the lobes of radio galaxies: Evolving observational perspective and recent clues
Gopal-Krishna, Paul Wiita
The issue of radiation mechanisms had triggered in 1950-60s the first applications of plasma physics to understand the nature of radio galaxies. This interplay has steadily intensi…
Spectral index variation across X-shaped radio galaxies
Dusmanta Patra, Ravi Joshi, Gopal-Krishna
The formation mechanism of the enigmatic subclass of radio galaxies, called 'X-shaped radio galaxies' (XRGs), or 'winged' radio galaxies, which account for of the radio…
The 'spectral index-flux density relation' for extragalactic radio sources selected at metre and decametre wavelengths
Pratik Dabhade, Gopal-Krishna
We use the recent releases of sensitive VLA/LOFAR large-area surveys at 340 MHz and 54 MHz, in conjunction with the 1.4 GHz NVSS, to accurately determine the `spectral index - flux…
Intranight Optical Variability of Blazars and Radio-quiet Quasars using the ZTF Survey
Vibhore Negi, Gopal-Krishna, Ravi Joshi +4
We explore the potential of the ongoing Zwicky-Transient-Facility (ZTF) survey for studying Intra-Night Optical Variability (INOV) of active galactic nuclei (AGN), in particular fo…