Abstract Details
| Name: Viral Parekh Affiliation: Raman Research Institute Conference ID: ASI2017_606 Title : Early results of uGMRT observations of diffuse radio sources Authors and Co-Authors : Ruta Kale, NCRA, Pune Abstract Type : Oral Abstract Category : Extragalactic astronomy Abstract : The Giant Metrewave Radio Telescope (GMRT) is currently undergoing a major upgrade in terms to achieve better rms sensitivity by a factor of up to three at low frequency (< GHz). This upgraded system will provide the lowest frequency broadband systems in the range 125 - 1450 MHz with instantaneous bandwidth of 400 MHz, 16384 channels and high time resolution, as well as RFI-mitigation capabilities. Wide bandwidth observations will simultaneously provide both higher angular resolution and spectral indices with unprecedented sensitivity and allows better dynamic range to detect faint radio emission. In this talk we will show our primary results of uGMRT observations of diffuse extended radio sources such as radio halos and relics. A wideband observations of a large number of extended radio sources will provide an unparalleled database of spectra. Prior to the development of the uGMRT, spectra of radio halos and relics were often not well enough sampled to discern between competing physical models. New uGMRT broadband observations of a large number of radio halos and relics will provide an unparalleled database of spectra. We will also discuss about RFI mitigation technique and other data analysis algorithms which we are testing on these new wide bandwidth data. |