17 citations · 32 across the 8 of their papers we have counts for
11 papers
Evidence for in-situ acceleration of relativistic particles in the wings of X-shaped radio galaxies
Dusmanta Patra, Gopal-Krishna, Ravi Joshi
We report evidence for in-situ acceleration/re-acceleration of relativistic particles in 11 radio wings out of a total of 68 wings sufficiently well-resolved for spectral mapping,…
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…
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…
A physically-motivated perspective of the Fanaroff-Riley classification of radio galaxies
Gopal-Krishna, Paul J. Wiita, Ravi Joshi +1
A small subset of extragalactic double radio sources, termed HYMORS (HYbrid MOrpholgy Radio Sources), is distinguished by a very unusual, hybrid morphology in terms of the Fanaroff…
The Twin Radio galaxy TRG J104454+354055
Gopal-Krishna, Ravi Joshi, Dusmanta Patra +4
We report observations of a bright dumb-bell system of galaxies () with the upgraded Giant Metrewave Radio Telescope (GMRT), which show that each member of this gravit…
Multi-frequency study of large size radio galaxies 3C 35 and 3C 284
Dusmanta Patra, Sabyasachi Pal
We report multi-frequency observations of large radio galaxies 3C 35 and 3C 284. The low-frequency observations were done with Giant Metrewave Radio Telescope starting from $\sim15…
Probing Nuclear and Circumnuclear Properties of NGC 6300 using X-ray Observations
Arghajit Jana, Arka Chatterjee, Neeraj Kumari +3
We present the results obtained from a detailed X-ray timing and spectral analysis of Seyfert 2 galaxy NGC 6300 by using observations with the {\it Suzaku}, {\it Chandra} and {\it…
Discovery of Jet-Induced Soft Lags of XTE J1550-564 during Its 1998 Outburst
Arka Chatterjee, Broja G. Dutta, Dusmanta Patra +2
X-ray time lags are complicated in nature. The exact reasons for complex lag spectra are yet to be known. However, the hard lags, in general, are believed to be originated due to t…
Evidence of Outflow Induced Soft Lags of Galactic Black Holes
Dusmanta Patra, Arka Chatterjee, Broja G. Dutta +2
The nature of lag variation of Galactic black holes remains enigmatic mostly because of nonlinear and non-local physical mechanisms which contribute to the lag of the photons comin…
Transient nature of J195754+353513
Sabyasachi Pal, Dusmanta Patra, Monique Hollick +1
We have searched for transient and/or variable radio sources in the field of Galactic micro-quasar Cygnus X-1 in 1.4 GHz (L band) using data from the Karl G. Jansky Very Large Arra…