60 citations · 535 across the 46 of their papers we have counts for
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Reliability of in-band and broadband spectral index measurement: systematic study of the effect of signal to noise for uGMRT data
Md Rashid, Nirupam Roy, J. D. Pandian +4
Low radio frequency spectral index measurements are a powerful tool to distinguish between different emission mechanisms and, in turn, to understand the nature of the sources. Besi…
Calibration requirement for Epoch of Reionization 21-cm signal observation -- III. Bias and variance in uGMRT ELAIS-N1 field power spectrum
Saikat Gayen, Rashmi Sagar, Sarvesh Mangla +6
Power spectrum of \HI 21-cm radiation is one of the promising probes to study large scale structure of the universe and understand galaxy formation and evolution. The presence of f…
Calibration requirements for Epoch of Reionization 21-cm signal observations -- II. Analytical estimation of the bias and variance with time-correlated residual gains
Jais Kumar, Prasun Dutta, Samir Choudhuri +1
Observation of redshifted 21-cm signals from neutral hydrogen holds the key to understanding the structure formation and its evolution during the reionization and post-reionization…
Calibration Requirements for Epoch of Reionization 21-cm signal observations -- I. Effect of time-correlated gains
Jais Kumar, Prasun Dutta, Nirupam Roy
The residual gain errors add to the systematics of the radio interferometric observations. In case of the high dynamic range observations, these systematic effects dominates over t…
Estimating statistics of sky brightness using radio interferometric observations
Prasun Dutta, Meera Nandakumar
Radio interferometric data are used to estimate the sky brightness distributions in radio frequencies. Here we focus on estimators of the large-scale structure and the power spectr…
The Effect of on Visibility Correlation and Power Spectrum Estimation
Prasun Dutta, Tapomoy Guha Sarkar, S. Pratik Khastgir
Visibility-visibility correlation has been proposed as a technique for the estimation of power spectrum, and used extensively for small field of view observations, where the effect…