273 citations · 2.2k across the 98 of their papers we have counts for
34 papers · 1 filter
Superdisks and the structural asymmetry of radio galaxies
Gopal-Krishna, Paul J. Wiita
We present a sample of 16 radio galaxies, each of which is characterized by a wide, elongated emission gap with fairly sharp and straight edges between the two radio lobes. This pa…
Stellar Disruption and the Quasar Radio Dichotomy
Gopal-Krishna, A. Mangalam, Paul J. Wiita
The origin of the dichotomy of radio loudness among quasars can be explained using recent findings that the mass of the central supermassive black hole (SMBH) in extended radio-lou…
Superdisks in Radio Galaxies: Jet-Wind Interactions
Gopal-Krishna, Paul J. Wiita, Santosh Joshi
Taking a clue from their sharp-edged (strip-like) morphology observed in several cases, a new mechanism is proposed for the formation of the emission gaps seen between the radio lo…
A giant radio jet ejected by an ultramassive black hole in a single-lobed radio galaxy
Joydeep Bagchi, Gopal-Krishna, Marita Krause +1
We report the discovery of a very unusual, highly asymmetric radio galaxy whose radio jet, the largest yet detected, emits strongly polarized synchrotron radiation and can be trace…
Influence of the jet opening angle on the derived kinematical parameters of blazar jets having uniform and stratified bulk motion
Gopal-Krishna, Samir Dhurde, Pronoy Sircar +1
We present analytical modelling of conical relativistic jets, in order to evaluate the role of the jet opening angle on certain key parameters that are inferred from VLBI radio obs…
Effects of Jet Opening Angle and Velocity Structure on Blazar Parameters
Paul J. Wiita, Gopal-Krishna, Samir Dhurde +1
We had earlier shown that for a constant velocity jet the discrepancy between the low speeds indicated by VLBI knot motions and the high Doppler factors inferred from emission of T…