Abstract Details
| Name: Sourabh Paul Affiliation: Raman Research Institute, Bangalore Conference ID: ASI2015_654 Title : Study of the 21 cm Epoch of reionization and foregrounds with Murchison Widefield Array. Authors and Co-Authors : Shiv K. Sethi, N. Udaya Shankar, K. S. Dwarakanath, Ravi Subrahmanyan, MWA Collaboration. Abstract Type : Oral Abstract Category : General Relativity and Cosmology Abstract : The Detection of 21 cm emission from neutral hydrogen of EoR is a challenging task due to the weakness of the signal. This is also limited by the various foreground effects. Thus any EoR experiment involves data of long duration and statistical analysis of the data might separate the signal from various foregrounds. In this paper we present analysis results of 3, 8 and 11 hours data of EoR1 field from Murchison Widefield Array (MWA). These include the power spectra measurement of both XX and YY polarizations. One of the goals here to locate the cleaner regions to study EoR and also study the interplay between noise and foregrounds. We discuss the comparison between isolation and removal of the foreground from the data and try to infer which method leads to less contamination in the EoR window. We also present some simulation results of an alternative drift scan technique. Few hours of drift scan data from MWA is analyzed and compared with the simulation. |