4 citations · 4 across the 4 of their papers we have counts for
9 papers
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
We compare earlier estimates of the volumes filled by lobes of radio galaxies during the quasar era based upon non-evolving ambient media with new ones assuming a strong cosmologic…
Asymmetries in Powerful Extragalactic Radio Sources
Gopal-Krishna, Paul J. Wiita
This review provides the background and current perspective of some of the striking asymmetries exhibited by extragalactic double-lobed radio sources, paying special attention to t…
Radio Galaxies and the Magnetization of the IGM
Gopal-Krishna, Paul J. Wiita
Observed radio galaxies had a much higher comoving density during the `quasar era', at z ~ 2-3, but these sources are only detectable for small fractions of their active lifetimes…
Radio galaxies and the star formation history of the universe
Gopal-Krishna, Paul J. Wiita, M. Angela Osterman
Multi-wavelength observations made in the last decade suggest that the universe underwent an intense phase of star formation in the past (z > 1). This intensive activity is commonl…
On the Origin of the Fanaroff-Riley Dichotomy
Gopal-Krishna, Paul J. Wiita
A small fraction of double radio sources show a peculiar and striking hybrid morphology; they have a distinctly FR I structure on one side of the nucleus, and a FR II structure on…
Extragalactic radio sources with hybrid morphology: implications for the Fanaroff-Riley dichotomy
Gopal-Krishna, Paul J. Wiita
We provide observational and theoretical perspectives on the currently much debated issue of the Fanaroff-Riley (FR) morphological dichotomy of extragalactic radio sources. In this…