Abstract Details

Name: Narendra Nath Patra
Affiliation: NCRA-TIFR
Conference ID: ASI2017_771
Title : The expanded Giant Metrewave Radio Telescope
Authors and Co-Authors : Nissim Kanekar (NCRA), Jayaram N. Chengalur (NCRA), Yashwant Gupta (NCRA)
Abstract Type : Oral
Abstract Category : Instrumentation and Techniques
Abstract : We present some preliminary results from a study regarding possible extensions of the Giant Metrewave Radio Telescope (GMRT). We explore three possibilities for expansion, viz. (1) installing Focal Plane Array (FPA) feeds to significantly increase the field of view (2) adding antennas at short baselines (baselines <~ 5 km) to improve the surface brightness sensitivity and (3) adding antennas at long baselines (~ 50 km) to reduce the confusion level. We will present the results from studies for the optimum antenna locations for getting a desired synthesized beam. We also compare the capability of some of these expanded configurations (with and without focal plane arrays) for deep high redshift HI surveys against that of pathfinders to the SKA as well as the SKA Phase I.