ICTS:31367

Video URL

Towards Detecting the Cosmological 21-cm Signal using Radio Interferometers

Towards Detecting the Cosmological 21-cm Signal using Radio Interferometers

(2025). Towards Detecting the Cosmological 21-cm Signal using Radio Interferometers. SciVideos. https://youtu.be/Ol3AZC42wR8

Towards Detecting the Cosmological 21-cm Signal using Radio Interferometers. SciVideos, Apr. 07, 2025, https://youtu.be/Ol3AZC42wR8 

          @misc{ scivideos_ICTS:31367,
            doi = {},
            url = {https://youtu.be/Ol3AZC42wR8},
            author = {},
            keywords = {},
            language = {en},
            title = {Towards Detecting the Cosmological 21-cm Signal using Radio Interferometers},
            publisher = {},
            year = {2025},
            month = {apr},
            note = {ICTS:31367 see, \url{https://scivideos.org/index.php/icts-tifr/31367}}
          }
Samir Choudhuri
Talk numberICTS:31367
Source RepositoryICTS-TIFR
Collection

Abstract

The observations of the redshifted 21-cm signal contain a wealth of cosmological and astrophysical information. The study of this signal from the high redshift Universe provides a unique opportunity to learn about the properties of the first stars and galaxies. However, the problem is particularly challenging due to the presence of foregrounds and system noise. In this talk, I will talk about different statistical estimators to measure the cosmological 21-cm signal from radio interferometric observations. Also, I will present our recent results towards detecting this faint 21-cm signal using the uGMRT and the MWA low-frequency observations.