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pro vyhledávání: '"Patwa, Akash Kumar"'
Autor:
Elahi, Khandakar Md Asif, Bharadwaj, Somnath, Chatterjee, Suman, Sarkar, Shouvik, Choudhuri, Samir, Sethi, Shiv, Patwa, Akash Kumar
Missing frequency channels pose a problem for estimating $P(k_\perp,k_\parallel)$ the redshifted 21-cm power spectrum (PS) from radio-interferometric visibility data. This is particularly severe for the Murchison Widefield Array (MWA), which has a pe
Externí odkaz:
http://arxiv.org/abs/2410.11380
Autor:
Chatterjee, Suman, Elahi, Khandakar Md Asif, Bharadwaj, Somnath, Sarkar, Shouvik, Choudhuri, Samir, Sethi, Shiv, Patwa, Akash Kumar
Drift scan observations provide the broad sky coverage and instrumental stability needed to measure the Epoch of Reionization (EoR) 21-cm signal. In such observations, the telescope's pointing center (PC) moves continuously on the sky. The Tracking T
Externí odkaz:
http://arxiv.org/abs/2405.10080
Intensity mapping with the redshifted 21-cm line is an emerging tool in cosmology. Drift scan observations, where the antennas are fixed to the ground and the telescope's pointing center (PC) changes continuously on the sky due to earth's rotation, p
Externí odkaz:
http://arxiv.org/abs/2212.01251
The detection of redshifted hyperfine line of neutral hydrogen (HI) is the most promising probe of the Epoch of Reionization (EoR). We report an analysis of 55 hours of Murchison Widefield Array (MWA) Phase II drift scan EoR data. The data correspond
Externí odkaz:
http://arxiv.org/abs/2104.03321
Autor:
Patwa, Akash Kumar, Sethi, Shiv
We present a formalism to extract the EoR HI power spectrum for drift scans using radio interferometers. Our main aim is to determine the coherence time scale of time-ordered visibilities. We compute the two-point correlation function of the HI visib
Externí odkaz:
http://arxiv.org/abs/1905.05772
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