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Number of items: 102. Lecavelier des Etangs, A. ; Sirothia, S. K. ; Gopal-Krishna, ; Zarka, P. (2011) GMRT search for 150 MHz radio emission from the transiting extrasolar planets HD 189733 b and HD 209458 b Astronomy & Astrophysics, 533 . A50_1-A50_6. ISSN 0004-6361 Gopal-Krishna, ; Goyal, Arti ; Joshi, S. ; Karthick, Chrisphin ; Sagar, R. ; Wiita, Paul J. ; Anupama, G. C. ; Sahu, D. K. (2011) Rapid optical variability of TeV blazars Monthly Notices of the Royal Astronomical Society, 416 (1). pp. 101-117. ISSN 0035-8711 Britzen, S. ; Witzel, A. ; Gong, B. P. ; Zhang, J. W. ; Krishna, G. ; Goyal, A. ; Aller, M. F. ; Aller, H. D. ; Zensus, J. A. (2010) Understanding BL Lacertae objects. Structural and kinematic mode changes in the BL Lac object PKS 0735+178 Astronomy & Astrophysics, 515 (12). A105_1-A105_12. ISSN 0004-6361 Goyal, Arti ; Gopal-Krishna, ; Joshi, S. ; Sagar, R. ; Wiita, Paul J. ; Anupama, G. C. ; Sahu, D. K. (2010) Optical variability of radio-intermediate quasars Monthly Notices of the Royal Astronomical Society, 401 (4). 2622-2634,. ISSN 0035-8711 Gopal-Krishna, ; Wiita, Paul J. (2010) Galaxy shells and the structure of radio galaxies: clues from centaurus A (NGC 5128) New Astronomy, 15 (1). pp. 96-101. ISSN 1384-1076 Gopal-Krishna, ; Biermann, Peter L. ; Souza, Vitor de ; Wiita, Paul J. (2010) Ultra-high-energy cosmic rays from centaurus A: Jet interaction with gaseous shells The Astrophysical Journal Letters, 720 (2). L155 - L1558. ISSN 0571-7248 Goyal, Arti ; Gopal-Krishna, ; Anupama, G. C. ; Sahu, D. K. ; Sagar, R. ; Britzen, S. ; Karouzos, M. ; Aller, M. F. ; Aller, H. D. (2009) Unusual optical quiescence of the classical BL lac object PKS 0735+178 on intranight time-scale Monthly Notices of the Royal Astronomical Society, 399 (3). pp. 1622-1632. ISSN 0035-8711 Bagchi, Joydeep ; Jacob, Joe ; Gopal-Krishna, ; Werner, Norbert ; Wadnerkar, Nitin ; Belapure, Jaydeep ; Kumbharkhane, A. C. (2009) A diffuse bubble-like radio-halo source MRC 0116+111: imprint of AGN feedback in a low-mass cluster of galaxies Monthly Notices of the Royal Astronomical Society, 399 (2). pp. 601-614. ISSN 0035-8711 Mangalam, A. ; Gopal-Krishna, ; Wiita, Paul J. (2009) The changing interstellar medium of massive elliptical galaxies and cosmic evolution of radio galaxies and quasars Monthly Notices of the Royal Astronomical Society, 397 (4). pp. 2216-2224. ISSN 0035-8711 Lecavelier des Etangs, A. ; Sirothia, S. K. ; Gopal-Krishna, ; Zarka, P. (2009) GMRT radio observations of the transiting extrasolar planet HD 189733 b at 244 and 614 MHz Astronomy & Astrophysics, 500 (3). L51-L54. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. (2009) Superdisks and the structural asymmetry of radio galaxies New Astronomy, 14 (1). pp. 51-58. ISSN 1384-1076 Kantharia, N. G. ; Das, M. ; Gopal-Krishna, (2009) GMRT detection of a new Wide-Angle Tail (WAT) radio source associated with the galaxy PGC 1519010 Journal of Astrophysics and Astronomy, 30 . pp. 37-51. ISSN 0250-6335 Clarke, T. E. ; Blanton, E. L. ; Sarazin, C. L. ; Anderson, L. D. ; Gopal-Krishna, ; Douglass, E. M. ; Kassim, N. E. (2009) Tracing multiple generations of active galactic nucleus feedback in the core of Abell 262 The Astrophysical Journal, 697 (2). pp. 1481-1492. ISSN 0004-637X Huchtmeier, W. K. ; Petrosian, A. ; Krishna, G. ; McLean, B. ; Kunth, D. (2008) Interacting and merging galaxies from the second Byurakan survey Astronomy & Astrophysics, 492 (2). pp. 367-369. ISSN 0004-6361 Goyal, A. ; Gopal-Krishna, ; Sagar, R. ; Anupama, G. C. ; Sahu, D. K. (2008) Comparative intra-night optical variability of high and low polarization quasars with dominant radio cores Bulletin of the Astronomical Society of India . p. 73. ISSN 0304-9523 Gopal- Krishna, ; Mangalam, A. ; Wiita, Paul J. (2008) Stellar disruption by supermassive black holes and the quasar radio loudness dichotomy The Astrophysical Journal Letters, 680 (1). L13-L16. ISSN 0571-7248 Gopal-Krishna, ; Wiita, Paul J. ; Joshi, Santosh (2007) Superdiscs in radio galaxies: jet-wind interactions Monthly Notices of the Royal Astronomical Society, 380 (2). pp. 703-711. ISSN 0035-8711 Arti, Goyal ; Gopal-Krishna, ; Ram, Sagar ; Anupama, G. C. ; Sahu, D. K. (2007) Further evidence for intra-night optical variability of radio-quiet quasars Bulletin of the Astronomical Society of India, 35 . pp. 141-154. ISSN 0304-9523 Gopal-Krishna, ; Dhurde, Samir ; Sircar, Pronoy ; Wiita, Paul J. (2007) Influence of the jet opening angle on the derived kinematical parameters of blazar jets having uniform and stratified bulk motion Monthly Notices of the Royal Astronomical Society, 377 (1). pp. 446-452. ISSN 0035-8711 Huchtmeier, W. K. ; Petrosian, A. ; Gopal-Krishna, ; Kunth, D. (2007) HI-observations of blue compact dwarf galaxies. II. Astronomy & Astrophysics, 462 (3). pp. 919-926. ISSN 0004-6361 Gopal-Krishna, ; Sircar, Pronoy ; Dhurde, Samir (2007) Kinematical diagrams for conical relativistic jet Journal of Astrophysics and Astronomy, 28 . pp. 29-40. ISSN 0250-6335 Bagchi, Joydeep ; Gopal-Krishna, ; Krause, Marita ; Joshi, Santosh (2007) A giant radio jet ejected by an ultramassive black hole in a single-lobed radio galaxy The Astrophysical Journal Letters, 670 (2). L85-L88. ISSN 0571-7248 Gopal-Krishna, ; Wiita, Paul J. ; Dhurde, Samir (2006) Bulk motion of ultrarelativistic conical blazar jets Monthly Notices of the Royal Astronomical Society, 369 (3). pp. 1287-1292. ISSN 0035-8711 Stalin, C. S. ; Gopa-Krishna, ; Ram Sagar, ; Wiita, Paul J. ; Mohan, V. ; Pandey, A. K. (2006) Multiband optical monitoring of the blazars S5 0716+714 and BL lacertae Monthly Notices of the Royal Astronomical Society, 366 (4). pp. 1337-1345. ISSN 0035-8711 Huchtmeier, W. K. ; Krishna, G. ; Petrosian, A. (2005) HI-observations of blue compact dwarf galaxies Astronomy & Astrophysics, 434 (3). pp. 887-894. ISSN 0004-6361 Stalin, C. S. ; Gupta, Alok C. ; Gopal- Krishna, ; Wiita, Paul J. ; Ram Sagar, (2005) Intranight optical variability of BL Lacs, radio-quiet quasars and radio-loud quasars Monthly Notices of the Royal Astronomical Society, 356 (2). pp. 607-614. ISSN 0035-8711 Gopal-Krishna, ; Ledoux, C. ; Melnick, J. ; Giraud, E. ; Kulkarni, V. ; Altieri, B. (2005) Optical and radio observations of a sample of 52 powerful ultra-steep spectrum radio sources Astronomy & Astrophysics, 436 (2). pp. 457-464. ISSN 0004-6361 Barai, Paramita ; Gopal-Krishna, ; Angela Osterman, M. ; Wiita, Paul J. (2004) Expansion of radio galaxies in a cosmologically evolving medium: possible implications for the cosmic star-formation history Bulletin of the Astronomical Society of India, 32 (4). pp. 385-394. ISSN 0304-9523 Lecavelier des Etangs, A. ; Gopal-Krishna, ; Durret, F. (2004) FUSE search for 105-106 K gas in the rich clusters of galaxies Abell 2029 and Abell 3112 Astronomy & Astrophysics, 421 (2). pp. 503-507. ISSN 0004-6361 Stalin, C. S. ; Gopal-Krishna, ; Ram Sagar, ; Wiita, Paul J. (2004) Intranight optical variability of radio-quiet and radio lobe-dominated quasars Monthly Notices of the Royal Astronomical Society, 350 (1). pp. 175-188. ISSN 0035-8711 Ram Sagar, ; Stalin, C. S. ; Gopal-Krishna, ; Wiita, Paul J. (2004) Intranight optical variability of blazars Monthly Notices of the Royal Astronomical Society, 348 (1). pp. 176-186. ISSN 0035-8711 Gopal-Krishna, ; Biermann, Peter L. ; Wiita, Paul J. (2004) Brightness suppression of relativistic radio jets of quasars: the role of the lower electron energy cutoff The Astrophysical Journal Letters, 603 (1). L9-12. ISSN 0571-7248 Gopal-Krishna, ; Dhurde, Samir ; Wiita, Paul J. (2004) Do the mildly superluminal VLBI knots exclude ultrarelativistic blazar jets? The Astrophysical Journal Letters, 615 (2). L81-L84. ISSN 0571-7248 Gopal-Krishna, ; Wiita, Paul J. ; Barai, Pramita (2004) Low-level radio emission from radio galaxies and implications for the large scale structure Journal of the Korean Astronomical Society, 37 . pp. 517-525. ISSN 0253-3065 Stalin, C. S. ; Gopal-Krishna, ; Ram Sagar, ; Wiita, Paul J. (2004) Optical variability properties of high luminosity AGN classes Journal of Astrophysics and Astronomy, 25 (1-2). pp. 1-55. ISSN 0250-6335 Kundt, Wolfgang ; Gopal-Krishna, (2004) The physics of E × B- drifting jets Journal of Astrophysics and Astronomy, 25 (3-4). pp. 115-127. ISSN 0250-6335 Gopal-Krishna, ; Dhakulkar, A. R. ; Wiita, P. J. ; Dhurde, S. (2003) Radio emission and the optical isophotal twist of radio-loud ellipticals Astronomy & Astrophysics, 410 (1). 139 - 141. ISSN 0004-6361 Gopal-Krishna, ; Stalin, C. S. ; Ram Sagar, ; Wiita, Paul J. (2003) Clear evidence for intranight optical variability in radio-quiet quasars The Astrophysical Journal, 586 (1). L25-L28. ISSN 0004-637X Gopal-Krishna, ; Wiita, Paul J. (2003) Did radio galaxies play a major role in the evolution of the Universe? Bulletin of the Astronomical Society of India, 31 . pp. 215-221. ISSN 0304-9523 Wiita, P. J. ; Stalin, C. S. ; Gopal-Krishna, ; Sagar, R. (2003) Intranight variability properties of different classes of active galactic nuclei Bulletin of the American Astronomical Society, 35 . pp. 1296-1297. ISSN 0002-7537 Gopal-Krishna, ; Biermann, Peter L. ; Wiita, Paul J. (2003) The origin of X-shaped radio galaxies: clues from the Z-symmetric secondary lobes The Astrophysical Journal Letters, 594 (2). L103-L106. ISSN 0571-7248 Stalin, C. S. ; Gopal-Krishna, ; Sagar, R. ; Wiita, P. J. (2002) A comparative study of the intra-night optical variability of powerful AGNs Bulletin of the Astronomical Society of India, 30 . pp. 765-766. ISSN 0304-9523 Gopal-Krishna, ; Wiita, Paul J. (2002) Hybrid morphology radio sources and the Fanaroff-Riley dichotomy New Astronomy Reviews, 46 (2-7). pp. 357-360. ISSN 1387-6473 Gopal-Krishna, ; Subramanian, P. ; Wiita, P. J. ; Becker, P. A. (2001) Are the hotspots of radio galaxies the sites of in situ acceleration of relativistic particles? Astronomy & Astrophysics, 377 (3). pp. 827-834. ISSN 0004-6361 Gopal-Krishna, ; Wiita, P. J. (2001) The Fanaroff-Riley transition and the optical luminosity of the host elliptical galaxy Astronomy & Astrophysics, 373 (1). pp. 100-105. ISSN 0004-6361 Enblin, T. A. ; Gopal-Krishna, (2001) Reviving fossil radio plasma in clusters of galaxies by adiabatic compression in environmental shock waves Astronomy & Astrophysics, 366 (1). pp. 26-34. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. (2001) Was the cosmic web of protogalactic material permeated by lobes of radio galaxies during the quasar era? The Astrophysical Journal Letters, 560 (2). L115-L118. ISSN 0571-7248 Gopal-Krishna, ; Gupta, Alok C. ; Ram Sagar, ; Wiita, Paul J. ; Chaubey, U. S. ; Stalin, C. S. (2000) Rapid optical variability in radio-quiet QSOs Monthly Notices of the Royal Astronomical Society, 314 (4). pp. 815-825. ISSN 0035-8711 Gopal-Krishna, ; Wiita, P.J. (2000) Extragalactic radio sources with hybrid morphology: implications for the Fanaroff-Riley dichotomy Astronomy & Astrophysics, 363 . pp. 507-516. ISSN 0004-6361 Gopal-Krishna, ; Irwin, Juditha A. (2000) Radio jet-blow neutral hydrogen supershells in spiral galaxies? Astronomy & Astrophysics, 361 . pp. 888-894. ISSN 0004-6361 Gopal-Krishna, ; Paul , J. (2000) Superdisks in radio galaxies Astrophysical Journal, 529 (1). pp. 189-200. ISSN 0004-637X Sagar, R. ; Gopal-Krishna, ; Mohan, V. ; Pandey, A. K. ; Bhatt, B. C. ; Wagner, S. J. (1999) Multi-colour optical monitoring of the intra-day variable blazar S5 0716+71 Astronomy & Astrophysics Supplement Series, 134 (3). pp. 453-461. ISSN 0365-0138 Bhatnagar, Sanjay ; Gopal-Krishna, ; Wisotzki, L. (1998) He 1127-1304: the largest radio quasar Monthly Notices of the Royal Astronomical Society, 299 (2). L25-L28. ISSN 0035-8711 Gopal-Krishna, ; Biermann, Peter L. (1998) Are ultra-luminous infrared galaxies the dominant extragalactic population at high luminosities? Astronomy & Astrophysics, 330 . L37-L40. ISSN 0004-6361 Gopal-Krishna, ; Barve, S. (1998) Discovery potential of small/medium-size optical telescopes : a study of publication patterns in Nature (1993-95) Bulletin of the Astronomical Society of India, 26 . pp. 417-424. ISSN 0304-9523 Srianand, R. ; Gopal-Krishna, (1998) Do the central engines of quasars evolve by accretion? Astronomy & Astrophysics, 334 . pp. 39-44. ISSN 0004-6361 Gopal-Krishna, ; Nath, Biman B. (1997) Accretion of gaseous disks at high redshifts and the depolarization asymmetry of radio-loud quasars Astronomy & Astrophysics, 326 . pp. 45-50. ISSN 0004-6361 Melnick, J. ; Gopal-Krishna, ; Terlevich, R. (1997) The cD galaxy Hydra A: evidence for cooling-flow driven star formation in a fast rotating central disk Astronomy & Astrophysics, 18 . pp. 337-346. ISSN 0004-6361 Gopal-Krishna, ; Subramanian, K. (1996) Testing the lensing hypothesis for compact double radio sources and other milli-lensing candidates Astronomy & Astrophysics, 315 . pp. 343-347. ISSN 0004-6361 Ram Sagar, ; Gopal-Krishna, ; Wiita, Paul J. (1996) Intranight optical monitoring of optically selected bright quasars Monthly Notices of the Royal Astronomical Society, 281 (4). pp. 1267-1276. ISSN 0035-8711 Gopal-Krishna, ; Wiita, Paul J. (1996) On the origin of correlated radio-optical asymmetries in double radio sources The Astrophysical Journal, 467 . p. 191. ISSN 0004-637X Giraud, E. ; Melnick, J. ; Gopal-Krishna, ; van Drom, E. (1996) The envelope of the red galaxies distribution in a z = 0.75 cluster field Astronomy & Astrophysics, 311 . pp. 446-450. ISSN 0004-6361 Giraud, E. ; Melnick, J. ; Gopal-Krishna, ; Mendes de Oliveira, C. ; Kulkarni, V. K. (1996) A giant low-ionization nebula associated with a radio galaxy in a forming cluster at z=0.79 Astronomy & Astrophysics, 309 . pp. 733-742. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. ; Hooda, Jagbir S. (1996) Weak headed quasars Astronomy & Astrophysics, 316 . L13-L16. ISSN 0004-6361 Gopal-Krishna, ; Kulkarni, V. K. ; Wiita, Paul J. (1996) The linear sizes of quasars and radio galaxies in the unified scheme The Astrophysical Journal Letters, 463 (1). L1-L4. ISSN 0571-7248 Gopal-Krishna, ; Giraud, E. ; Melnick, J. ; della Valle, M. (1995) A giant Lyα cloud associated with a dust-lane radio galaxy at Z = 2.468 Astronomy & Astrophysics, 303 . p. 705. ISSN 0004-6361 Mangalam, Arun V. ; Gopal-Krishna, (1995) Intrinsic radio spectra and structural asymmetry of powerful radio galaxies Monthly Notices of the Royal Astronomical Society, 275 (4). pp. 976-982. ISSN 0035-8711 Gopal-Krishna, ; Ram Sagar, ; Wiita, Paul J. (1995) Intranight optical variability in optically selected QSOs Monthly Notices of the Royal Astronomical Society, 274 (3). pp. 701-710. ISSN 0035-8711 Gopal-Krishna, ; Sagar, Ram ; Wiita, P. J. (1995) Intra night optical variability in optically selected QSOs Monthly Notices of the Royal Astronomical Society, 274 (3). pp. 701-710. ISSN 0035-8711 Falcke, H. ; Gopal-Krishna, ; Biermann, P. L. (1995) Unified schemes for active galaxies: a clue from the missing Fanaroff-Riley type I quasar population Astronomy & Astrophysics, 298 . pp. 395-399. ISSN 0004-6361 Kneib, J. P. ; Melnick, J. ; Gopal-Krishna, (1994) The Cl2236-04 lens cluster: looking for a third gravitational image? Astronomy & Astrophysics, 290 . L25-L28. ISSN 0004-6361 Wiita, P. J. ; Gopal-Krishna, ; Sagar, R. (1994) Optical microvariability in radio quiet quasars IAU Symposium, 159 . p. 414. Ghosh, T. ; Gopal-Krishna, ; Rao, A. P. (1994) Three-year monitoring of a sample of flat-spectrum radio sources at 327 MHz Astronomy & Astrophysics Supplement Series, 106 . pp. 29-37. ISSN 0365-0138 Gopal-Krishna, ; Kulkarni, V. K. ; Mangalam, Arun V. (1994) The unification of radio galaxies and quasars: implications of the radio sizes and number densities Monthly Notices of the Royal Astronomical Society, 268 . p. 459. ISSN 0035-8711 Gopal-Krishna, ; Yates, M. ; Wiita, Paul J. ; Smette, A. ; Pati, A. ; Altieri, B. (1993) Near-infrared and optical imaging of Q2345+007: the largest gravitationally lensed QSO system? Astronomy & Astrophysics, 280 (2). pp. 360-364. ISSN 0004-6361 Gopal-Krishna, ; Sagar, R. ; Wiita, P. J. (1993) Testing the mechanisms for optical micro-variability of powerful active galactic nuclei Bulletin of the Astronomical Society of India, 21 (3-4). pp. 441-445. ISSN 0304-9523 Gopal-Krishna, ; Ram Sagar, ; Wiita, Paul J. (1993) A search for intra-night optical variability in radio-quiet QSOs Monthly Notices of the Royal Astronomical Society, 262 (4). pp. 963-969. ISSN 0035-8711 Gopal-Krishna, ; Wiita, Paul J. (1993) Reconciling the magnetic field structures seen in variable active galactic nuclei with the unified scheme Nature, 363 (6425). 142 - 144. ISSN 0028-0836 Melnick, J. ; Altieri, B. ; Gopal-Krishna, ; Giraud, E. (1993) Discovery of a luminous giant arc in a high redshift cluster of galaxies Astronomy & Astrophysics, 271 (1). L5-L8. ISSN 0004-6361 Gopal-Krishna, ; Wiita, P. J. ; Altieri, B. (1993) Optical microvariability and radio quiet QSOS Astronomy & Astrophysics, 271 . pp. 89-92. ISSN 0004-6361 Gopal-Krishna, ; Spoelstra, T. A. T. (1993) A sample of Gigahertz peaked spectrum ratio sources: List 3 Astronomy & Astrophysics, 271 . pp. 101-103. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. (1992) Swinging jets and the variability of active galactic nuclei Astronomy & Astrophysics, 259 (1). pp. 109-117. ISSN 0004-6361 Gopal-Krishna, ; Giraud, E. ; Melnick, J. ; Steppe, H. (1992) A powerful ultra steep spectrum radio galaxy having an extremely low excitation emission line spectrum Astronomy & Astrophysics, 254 . p. 42. ISSN 0004-6361 Subramanian, K. ; Gopal-Krishna, (1991) Enhanced probability of intensity outbursts via superluminal microlensing of quasars Astronomy & Astrophysics, 248 (1). pp. 55-56. ISSN 0004-6361 Gopal-Krishna, (1991) Cosmic evolution of linear sizes and luminosity function of powerful radio galaxies - is there a common cause? Astronomy & Astrophysics, 248 (2). pp. 415-418. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. (1991) Gaseous halos of elliptical galaxies, the cosmic evolution of their radio sizes, and the phenomenon of compact steep-spectrum sources Astrophysical Journal, 373 . pp. 325-335. ISSN 0004-637X Gopal-Krishna, ; Subramanian, Kandaswamy (1991) Gravitational micro-lensing of the relativistic jets of quasars Nature, 349 . pp. 766-768. ISSN 0028-0836 Gopal Krishna, (1991) An intergalactic origin for the low-frequency flux variations of extragalactic radio sources Current Science, 60 (2). pp. 117-120. ISSN 0011-3891 Swarup, G. ; Kapahi, V. K. ; Velusamy, T. ; Ananthakrishnan, S. ; Balasubramanian, V. ; Gopal-Krishna, ; Pramesh Rao, A. ; Subrahmanya, C. R. ; Kulkarni, V. K. (1991) Twenty-five years of radio astronomy at TIFR Current Science, 60 (2). pp. 79-94. ISSN 0011-3891 O'Dea, C. P. ; Baum, S. A. ; Stanghellini, C. ; Morris, G. B. ; Patnaik, A. R. ; Gopal-Krishna, (1990) Multifrequency VLA observations of GHz-peaked-spectrum radio cores Astronomy & Astrophysics Supplement Series, 84 (3). pp. 549-562. ISSN 0365-0138 Gopal-Krishna, ; Wiita, P. J. (1990) Multiple shocks in hot spots as the source of the spectral index-radio luminosity correlation in extended extragalactic radio sources Astronomy & Astrophysics, 236 (2). pp. 305-310. ISSN 0004-6361 Wiita, Paul J. ; Gopal-Krishna, (1990) On spectral aging in lobes of double radio sources The Astrophysical Journal, 353 . pp. 476-479. ISSN 0004-637X Ghosh, T. ; Gopal-Krishna, (1990) A multifrequency study of radio intensity variations for active galactic nuclei of different optical classes Astronomy & Astrophysics, 230 (2). pp. 297-303. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. ; Saripalli, L. (1989) The formation, numbers and radio output of Giant radio galaxies Monthly Notices of the Royal Astronomical Society, 239 . pp. 173-187. ISSN 0035-8711 Gopal-Krishna, ; Wiita, Paul J. (1988) Hot gaseous coronae of early-type galaxies and their radio luminosity function Nature, 333 . pp. 49-51. ISSN 0028-0836 Gopal-Krishna, (1988) An investigation of the redshift-dependence of the radio spectral index among powerful double radio sources Astronomy & Astrophysics, 192 (1-2). pp. 37-41. ISSN 0004-6361 Gopal-Krishna, ; Wiita, Paul J. (1987) The expansion and cosmological evolution of powerful radio sources Monthly Notices of the Royal Astronomical Society, 226 . pp. 531-542. ISSN 0035-8711 Saripalli, L. ; Gopal-Krishna, ; Reich, W. ; Kuehr, H. (1986) Giant radio galaxy 0503-286 Astronomy & Astrophysics, 170 (1). pp. 20-26. ISSN 0004-6361 Gopal-Krishna, ; Chitre, S. M. (1983) Inversion symmetry of radio lobes in extragalactic sources Nature, 303 (5914). 217 - 218. ISSN 0028-0836 Kundt, W. ; Gopal-Krishna, (1981) Twin-jets from the centres of galaxies Astrophysics and Space Science, 75 (2). pp. 257-272. ISSN 0004-640X Gopal-Krishna, ; Preuss, E. ; Schilizzi, R. T. (1980) Prominent VLBI cores in powerful radio sources with arc second structure Nature, 288 . 344 - 347. ISSN 0028-0836 Joshi, M. N. ; Kapahi, V. K. ; Gopal-Krishna, ; Sarma, N. V. G. ; Swarup, G. (1973) Occultations of 50 radio sources at 327 MHz The Astronomical Journal, 78 (10). pp. 1023-1029. ISSN 0004-6256 |