Publications (74)
Asymmetries in Powerful Extragalactic Radio Sources
Gopal-Krishna, Paul J. Wiita
Ultra-High Energy Cosmic Rays from Centaurus A: Jet Interaction with Gaseous Shells
Gopal-Krishna, Peter L. Biermann, Vitor de Souza +1
A giant radio jet ejected by an ultramassive black hole in a single-lobed radio galaxy
Joydeep Bagchi, Gopal-Krishna, Marita Krause +1
Further evidence for intra-night optical variability of radio-quiet quasars
A. Goyal, Gopal-Krishna, Ram Sagar +2
On the Origin of the Fanaroff-Riley Dichotomy
Gopal-Krishna, Paul J. Wiita
Radio continuum emission and HI gas accretion in the NGC 5903/5898 compact group of early-type galaxies
Gopal-Krishna, Mukul Mhaskey, Paul J. Wiita +3
Are Cluster Radio Relics Revived Fossil Radio Cocoons?
Torsten A. Ensslin, Gopal-Krishna
Polarimetric and spectroscopic study of radio-quiet weak emission line quasars
Parveen Kumar, H. Chand, R. Srianand +3
Extragalactic radio sources with hybrid morphology: implications for the Fanaroff-Riley dichotomy
Gopal-Krishna, Paul J. Wiita
Effects of Jet Opening Angle and Velocity Structure on Blazar Parameters
Paul J. Wiita, Gopal-Krishna, Samir Dhurde +1
Optical variability properties of high luminosity AGN classes
C. S. Stalin, Gopal-Krishna, Ram Sagar +1
Constraints on supermassive black hole spins from observations of active galaxy jets
E. Kun, P. J. Wiita, L. Ã. Gergely +3
Clear Evidence for Intranight Optical Variability in Radio-quiet Quasars
Gopal-Krishna, C. S. Stalin, Ram Sagar +1
Multi-wavelength variability study of the classical BL Lac object PKS 0735+178 on timescales ranging from decades to minutes
Arti Goyal, Lukasz Stawarz, Michal Ostrowski +6
A diffuse bubble-like radio-halo source MRC 0116+111: imprint of AGN feedback in a low-mass cluster of galaxies
Joydeep Bagchi, Joe Jacob, Gopal-Krishna +4
Intranight optical variability of Blazars
Ram Sagar, C. S. Stalin, Gopal-Krishna +1
On the photometric error calibration for the `differential light curves' of point-like Active Galactic Nuclei
Arti Goyal, Mukul Mhaskey, Gopal-Krishna +3
Stellar Disruption and the Quasar Radio Dichotomy
Gopal-Krishna, A. Mangalam, Paul J. Wiita
Intra-Night Optical monitoring of three γ-ray detected Narrow-line Seyfert 1 galaxies
Vineet Ojha, Gopal-Krishna, Hum Chand
Mega parsec relativistic jets launched from an accreting supermassive blackhole in an extreme spiral galaxy
Joydeep Bagchi, Vivek M., Vinu Vikram +6
Extragalactic radio sources with sharply inverted spectrum at metre wavelengths
Gopal-Krishna, S. K. Sirothia, Mukul Mhaskey +5
Supermassive black hole mergers as dual sources for electromagnetic flares in the jet emission and gravitational waves
M. Tápai, L. Ã. Gergely, Z. Keresztes +3
Radio emission and the optical isophotal twist of radio-loud ellipticals
Gopal-Krishna, Amit R. Dhakulkar, Paul J. Wiita +1
Reviving Fossil Radio Plasma in Clusters of Galaxies by Adiabatic Compression in Environmental Shock Waves
Torsten A. Ensslin, Gopal-Krishna
Multi-epoch intra-night optical monitoring of 8 radio-quiet BL Lac candidates
P. Kumar, Gopal-Krishna, C. S. Stalin +3
Multiband optical monitoring of the blazars S5 0716+714 and BL Lacertae
C. S. Stalin, Gopal-Krishna, Ram Sagar +3
Intranight Optical Variability of Radio-Quiet Weak Emission Line Quasars-III
Parveen Kumar, Gopal-Krishna, Hum Chand
The Linear Sizes of Quasars and Radio Galaxies in the Unified Scheme
Gopal-Krishna, Vasant Kulkarni, Paul J. Wiita
Incidence of Mg II absorption systems towards flat-spectrum radio quasars
Hum Chand, Gopal-Krishna
Diffuse bubble-like radio-halo emission in MRC 0116+111: Imprint of AGN feedback in a distant cluster of galaxies
Joydeep Bagchi, Joe Jacob, Gopal-Krishna +4
Expansion of radio galaxies in a cosmologically evolving medium: Possible implications for the cosmic star-formation history
Paramita Barai, Gopal-Krishna, M. Angela Osterman +1
Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
A. Goyal, L. Stawarz, S. Zola +109
Intra-night Optical Variability of BL Lacs, Radio-Quiet Quasars and Radio-Loud Quasars
C. S. Stalin, A. C. Gupta, Gopal-Krishna +2
Intra-night optical variability of core dominated radio quasars: the role of optical polarization
Arti Goyal, Gopal-Krishna, Paul J. Wiita +4
Intranight Optical Variability of Radio-Quiet Weak Emission Line Quasars-IV
Parveen Kumar, Hum Chand, Gopal-Krishna
Bulk Motion of Ultrarelativistic Conical Blazar Jets
Gopal-Krishna, Paul J. Wiita, Samir Dhurde
On the injection spectrum of relativistic electrons in high-redshift radio galaxies
Gopal-Krishna, Mukul Mhaskey, A. Mangalam
GMRT observations of extragalactic radio sources with steeply inverted spectra
Mukul Mhaskey, Gopal-Krishna, Pratik Dabhade +3
Was the Cosmic Web of Protogalactic Material Permeated by Lobes of Radio Galaxies During the Quasar Era?
Gopal-Krishna, Paul J. Wiita
Towards building a first northern-sky sample of 'Extremely Inverted Spectrum Extragalactic Radio Sources (EISERS)'
Mukul Mhaskey, Gopal-Krishna, Surajit Paul
On the origin of X-shaped radio galaxies
Gopal-Krishna, Peter L. Biermann, László Ã. Gergely +1
Incidence of Strong MgII Absorbers Towards Different Types of Quasars
Ravi Joshi, Hum Chand, Gopal-Krishna
Do the central engines of quasars evolve by accretion ?
R. Srianand, Gopal-Krishna
The changing ISM of massive elliptical galaxies and cosmic evolution of radio galaxies and quasars
A. Mangalam, Gopal-Krishna, Paul J. Wiita
Unusual optical quiescence of the classical BL Lac object PKS 0735+178 on intranight time scale
Arti Goyal, Gopal-Krishna, G. C. Anupama +6
GMRT search for 150 MHz radio emission from the transiting extrasolar planets HD189733b and HD209458b
A. Lecavelier des Etangs, S. K. Sirothia, Gopal-Krishna +1
Optical variability of radio-intermediate quasars
Arti Goyal, Gopal-Krishna, S. Joshi +4
Intranight Optical Variability of Radio-Quiet Weak Emission Line Quasars-II
Hum Chand, Parveen Kumar, Gopal-Krishna
GMRT radio observations of the transiting extrasolar planet HD189733b at 244 and 614 MHz
A. Lecavelier des Etangs, S. K. Sirothia, Gopal-Krishna +1
Radio Galaxies and the Magnetization of the IGM
Gopal-Krishna, Paul J. Wiita
Discovery of the first giant double radio relic in a galaxy cluster found in the PLANCK Sunyaev-Zel'dovich cluster survey: PLCK G287.0+32.9
Joydeep Bagchi, S. K. Sirothia, Norbert Werner +6
Tracing Ghost Cavities with Low Frequency Radio Observations
Tracy Clarke, Elizabeth Blanton, Craig Sarazin +5
Improved characterisation of intra-night optical variability of prominent AGN classes
Arti Goyal, Gopal-Krishna, Paul J. Wiita +2
Unified schemes for active galaxies: a clue from the missing Fanaroff-Riley type I quasar population
Heino Falcke, Gopal-Krishna, Peter L. Biermann
On the incidence of MgII absorbers along the blazar sightlines
S. Mishra, H. Chand, Gopal-Krishna +3
Intranight optical variability of radio-quiet and radio lobe dominated quasars
C. S. Stalin, Gopal-Krishna, Ram Sagar +1
Understanding BL Lac objects Structural & kinematic mode changes in the BL Lac object PKS 0735+178
S. Britzen, A. Witzel, B. P. Gong +6
The Origin of X-shaped Radio Galaxies: Clues from the Z-symmetric Secondary Lobes
Gopal-Krishna, Peter L. Biermann, Paul J. Wiita
Rapid optical variability of TeV blazars
Gopal-Krishna, Arti Goyal, S. Joshi +5
The Fanaroff-Riley Transition and the Optical Luminosity of the Host Elliptical Galaxy
Gopal-Krishna, Paul J. Wiita
Optical monitoring of Active Galactic Nuclei from ARIES
Gopal-Krishna, Paul J. Wiita
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
Do the mildly superluminal VLBI knots exclude ultrarelativistic blazar jets?
Gopal-Krishna, Samir Dhurde, Paul J. Wiita
FUSE search for 10^5-10^6 K gas in the rich clusters of galaxies Abell 2029 and Abell 3112
A. Lecavelier des Etangs, Gopal-Krishna, F. Durret
Radio galaxies and the star formation history of the universe
Gopal-Krishna, Paul J. Wiita, M. Angela Osterman
Are the hotspots of radio galaxies the sites of in-situ acceleration of relativistic particles?
Gopal-Krishna, Prasad Subramanian, Paul J. Wiita +1
A giant radio jet of very unusual polarization in a single-lobed radio galaxy
Joydeep Bagchi, Gopal-Krishna, Marita Krause +2
Hint of 150 MHz radio emission from the Neptune-mass extrasolar transiting planet HAT-P-11b
A. Lecavelier des Etangs, S. K. Sirothia, Gopal-Krishna +1
Superdisks in Radio Galaxies: Jet-Wind Interactions
Gopal-Krishna, Paul J. Wiita, Santosh Joshi
Brightness suppression of relativistic radio jets of quasars: The role of the lower electron energy cut-off
Gopal-Krishna, Peter L. Biermann, Paul J. Wiita
Tracing Multiple Generations of AGN Feedback in the Core of Abell 262
T. E. Clarke, E. L. Blanton, C. L. Sarazin +4
Superdisks and the structural asymmetry of radio galaxies
Gopal-Krishna, Paul J. Wiita
Radio Jet-blown Neutral Hydrogen Supershells in Spiral Galaxies?
Gopal-Krishna, Judith A. Irwin
GMRT detection of a new wide-angle tail (WAT) radio source associated with the galaxy PGC 1519010
N. G. Kantharia, M. Das, Gopal-Krishna