1.3k citations · 9.4k across the 123 of their papers we have counts for
8 papers · 1 filter
A study of fundamental limitations to statistical detection of redshifted HI from the epoch of reionization
Nithyanandan Thyagarajan, N. Udaya Shankar, Ravi Subrahmanyan +46
In this paper we explore for the first time the relative magnitudes of three fundamental sources of uncertainty, namely, foreground contamination, thermal noise and sample variance…
B0707-359: a case study of change in AGN-black hole spin axis
L. Saripalli, J. M. Malarecki, R. Subrahmanyan +2
Structures of radio galaxies have the potential to reveal inconstancy in the axis of the beams, which reflect the stability in the spin axis of the supermassive black hole at the c…
On the detection and tracking of space debris using the Murchison Widefield Array. I. Simulations and test observations demonstrate feasibility
S. J. Tingay, D. L. Kaplan, B. McKinley +60
The Murchison Widefield Array (MWA) is a new low frequency interferomeric radio telescope. The MWA is the low frequency precursor to the Square Kilometre Array (SKA) and is the fir…
Environments of Extended Radio Sources in the ATLBS Survey
K. Thorat, L. Saripalli, R. Subrahmanyan
We present a study of the environments of extended radio sources in the Australia Telescope Low Brightness Survey (ATLBS). The radio sources were selected from the Extended Source…
Is there an unaccounted excess Extragalactic Cosmic Radio Background?
Ravi Subrahmanyan, Ramanath Cowsik
Analyses of measurements of the distribution of absolute brightness temperature over the radio sky have led recently to suggestions that there exists a substantial unexplained extr…
An octave bandwidth frequency independent dipole antenna
Agaram Raghunathan, N. Udaya Shankar, Ravi Subrahmanyan
Precision measurements of the spectrum of the cosmic radio background require frequency independent antennas of small electrical dimensions. We describe the design of a wide-band f…