Browsing by Author Gopal-Krishna

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Issue DateTitleAuthor(s)
3-Jun-2009The changing interstellar medium of massive elliptical galaxies and cosmic evolution of radio galaxies and quasarsMangalam, A; Gopal-Krishna; Wiita, Paul J
Sep-2002A comparative study of the intra-night optical variability of powerful AGNsStalin, C. S; Gopal-Krishna; Sagar, R; Wiita, P. J
Dec-2004Expansion of radio galaxies in a cosmologically evolving medium: possible implications for the cosmic star-formation historyBarai, P; Gopal-Krishna; Osterman, M. A; Wiita, P. J
Jun-2007Further evidence for intra-night optical variability of radio-quiet quasarsGoyal, Arti; Gopal-Krishna; Sagar, R; Anupama, G. C; Sahu, D. K
21-Oct-2013Improved characterization of intranight optical variability of prominent AGN classesGoyal, A; Gopal-Krishna; Wiita, P. J; Stalin, C. S; Sagar, R
Aug-2012Intra-night optical variability of core dominated radio quasars: the role of optical polarizationGoyal, A; Gopal-Krishna; Wiita, P. J; Anupama, G. C; Sahu, D. K; Sagar, R; Joshi, S
Aug-1996Intranight optical monitoring of optically selected bright quasarsSagar, R; Gopal-Krishna; Wiita, P. J
Jun-1995Intranight optical variability in optically selected QSOsGopal-Krishna; Sagar, R; Wiita, J. Paul
Feb-1999Multi-colour optical monitoring of the intra-day variable blazar S5 0716+71Sagar, R; Gopal-Krishna; Mohan, V; Pandey, A. K; Bhatt, B. C; Wagner, S. J
Oct-2017Multi-epoch intranight optical monitoring of eight radio-quiet BL Lac candidatesKumar, P; Gopal-Krishna; Stalin, C. S; Chand, H; Srianand, R; Petitjean, P
Dec-1993Near-infrared and optical imaging of Q2345+007: The largest gravitationally lensed QSO system?Gopal-Krishna; Yates, M; Wiita, P. J; Smette, A; Pati, A. K; Altieri, B
1-Jan-2012On the injection spectrum of relativistic electrons in high-redshift radio galaxiesGopal-Krishna; Mhaskey, Mukul; Mangalam, A
Sep-2013On the Photometric Error Calibration for the Differential Light Curves of Point-like Active Galactic NucleiGoyal, Arti; Mhaskey, Mukul; Gopal-Krishna; Witta, P. J; Stalin, C. S; Sagar, R
1994Optical microvariability in radio quiet quasarsWiita, P. J; Gopal-Krishna; Sagar, R
Feb-2010Optical variability of radio-intermediate quasarsGoyal, Arti; Gopal-Krishna; Joshi, S; Sagar, R; Wiita, Paul J; Anupama, G. C; Sahu, D. K
Oct-2018Polarimetric and spectroscopic study of radio quiet weak emission line quasarsKumar, P; Chand, H; Srianand, R; Stalin, C. S; Petitjean, P; Gopal-Krishna
Sep-2009Prolonged intranight optical quiescence of the classical BL Lac object PKS 0735+178Goyal, A; Gopal-Krishna; Anupama, G. C; Sahu, D. K; Sagar, R; Britzen, S; Karazous, M; Aller, M. F; Aller, H. D
Dec-1978The Radio Source Projected Near the Absorption-Line QSO PHL 5200Gopal-Krishna
Sep-2011Rapid optical variability of TeV blazarsGopal-Krishna; Goyal, A; Joshi, S; Karthick, C; Sagar, R; Wiita, P. J; Anupama, G. C; Sahu, D. K
15-Jun-1993A search for intra-night optical variability in radio-quiet QSOsGopal-Krishna; Sagar, R; Witta, P. J