B. S. Girish

TL;DR: In this article, the authors used the SARAS 2 spectral radiometer for the precision measurement of these monopole or all-sky global 21 cm spectral distortions, and derived likelihoods for plausible redshifted 21 cm signals predicted by theoretical models.

TL;DR: In this paper, the authors present the design philosophy of the SARAS 2 system and discuss its performance and limitations based on laboratory and field measurements, and show that the gain calibration and modeling of internal additive signals leave no residuals with Fourier amplitudes exceeding 2 mK, or residual Gaussians of 25 MHz width with amplitudes over 2mK.

TL;DR: In this article, the first-light data from SARAS~2 radiometer were analyzed with Bayesian likelihood-ratio tests using $264$ plausible astrophysical scenarios, out of which 25 are rejected at a significance $>5\sigma.

TL;DR: In this paper, the first-light data from SARAS~2 radiometer were analyzed with Bayesian likelihood-ratio tests using $264$ plausible astrophysical scenarios, out of which 25 are rejected at a significance $>5\sigma.

TL;DR: SARAS~2 as mentioned in this paper is an ongoing experiment that aims to detect the global 21 cm signal from Cosmic Dawn (CD) and the Epoch of Reionization (EoR), at redshifts of 6-30.