104 citations · 204 across the 8 of their papers we have counts for
8 papers
Spectral energy distributions of the BL Lac PKS 2155-304 from XMM-Newton
Jai Bhagwan, Alok C. Gupta, I. E. Papadakis +1
We have used all 20 archival XMM-Newton observations of PKS 2155-304 with simultaneous X-ray and UV/optical data to study its long term flux and spectral variability. We find signi…
Constraints on supermassive black hole spins from observations of active galaxy jets
E. Kun, P. J. Wiita, L. Á. Gergely +3
We discuss the origin of the low-energy cutoff, or LEC, seen in the radio spectra of many extragalactic jets and relate this to the spin of the supermassive black holes that presum…
Spectral Energy Distribution variation in BL Lacs and FSRQs
Bindu Rani, Alok C. Gupta, R. Bachev +9
We present the results of our study of spectral energy distributions (SEDs) of a sample of ten low- to intermediate-synchrotron-peaked blazars. We investigate some of the physical…
Radio Properties of Low Redshift Broad Line Active Galactic Nuclei Including Extended Radio Sources
Stephen E. Rafter, D. Michael Crenshaw, Paul J. Wiita
We present a study of the extended radio emission in a sample of 8434 low redshift (z < 0.35) broad line active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS). To c…
Quasi-Periodic Oscillations of ~ 15 minutes in the Optical Light Curve of the BL Lac S5 0716+714
Bindu Rani, Alok C. Gupta, U. C. Joshi +2
Over the course of three hours on 27 December 2008 we obtained optical (R-band) observations of the blazar S5 0716+714 at a very fast cadence of 10 s. Using several different techn…
The changing ISM of massive elliptical galaxies and cosmic evolution of radio galaxies and quasars
A. Mangalam, Gopal-Krishna, Paul J. Wiita
The recently discovered apparent dramatic expansion in the effective radii of massive elliptical galaxies from to has been interpreted in terms of eithe…