| Name: | Rashmi Sagar |
| Affiliation: | IIT Indore |
| Conference ID : | ASI2023_645 |
| Title : | Probing the Epoch of Reionization using uGMRT with deep field observations in Band-2 |
| Authors : | Rashmi Sagar, Abhirup Datta, Arnab Chakraborty and Akriti Sinha |
| Mode of Presentation: | Oral |
| Abstract Category : | General Relativity and Cosmology |
| Abstract : | One of the main obstacles in low-frequency deep radio observations is to prominently eliminate the foregrounds in detection of spin-flip transition of neutral hydrogen from Epoch of Reionization (EoR) and Cosmic Dawn (CD). Foreground characterization is essential for efficient removal of them. This paper uses uGMRT to study ELAIS-N1 deep field with significant observation time of 24h at frequency 120 - 250 MHz with 120 MHz bandwidth. This work performs image synthesis and reaches to the central background root mean square noise of ∼ 220 ?Jy/beam using upgraded GMRT for the first time. The resolution of the image is ∼ 11.5 arcsec with a radio catalog of sources having flux density >10 ?Jy. We are discussing the flux scale comparison and astronomical accuracy with other radio catalogs using cross-matching. As galactic synchrotron radiation dominates the sky after removal of point source, we estimate the statistical fluctuations in galactic diffuse synchrotron emission over a wideband of frequency range 120 - 250 MHz using power spectrum estimators. This work demonstrates the improved performance of uGMRT. |
