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Visibility based angular power spectrum estimation in low frequency radio interferometric observations
Samir Choudhuri, Somnath Bharadwaj, Abhik Ghosh +1
We present two estimators to quantify the angular power spectrum of the sky signal directly from the visibilities measured in radio interferometric observations. This is relevant f…
The effect of non-Gaussianity on error predictions for the Epoch of Reionization (EoR) 21-cm power spectrum
Rajesh Mondal, Somnath Bharadwaj, Suman Majumdar +2
The Epoch of Reionization (EoR) 21-cm signal is expected to become increasingly non-Gaussian as reionization proceeds. We have used semi-numerical simulations to study how this aff…
On the use of semi-numerical simulations in predicting the 21-cm signal from the epoch of reionization
Suman Majumdar, Garrelt Mellema, Kanan K. Datta +4
We present a detailed comparison of three different simulations of the epoch of reionization (EoR). The radiative transfer simulation (-RAY) among them is our benchmark.…