| Name: Prasun Dutta |
| Affiliation: IIT (BHU), Varanasi |
| Conference ID: ASI2026_912 |
| Title: Understanding systematics to uncover the redshifted 21-cm emission |
| Abstract Type: Oral |
| Abstract Category: Galaxies and Cosmology |
| Author(s) and Co-Author(s) with Affiliation: Prasun Dutta(IIT (BHU), Varanasi), Saikat Gayen(IIT (BHU), Varanasi), Nirupam Roy(IISC, Bangalore), Jais Kumar(Government Degree College, Manikpur) |
| Abstract: Major challenge for redshifted 21-cm detection from the epoch of Reionization and post Reionization era is the systematics arising from various signal path effects, instruments and orders of magnitude high foreground. We investigate the case of interferometric gain residuals and their imprint on the power spectrum estimators, like the Tapered Gridded Estimator, and estimate the bias and uncertainty in power spectrum estimates from the uGMRT observations. The methodology, the effect of gain errors and their origin and some possible mitigation strategies will be discussed. |
