Abstract Details

Name: Ruta Kale
Affiliation: NCRA-TIFR
Conference ID: ASI2021_490
Title : Upgraded GMRT view of the highest redshift radio halo cluster El Gordo
Authors and Co-Authors : Ruta Kale (National Centre for Radio Astrophysics, Tata Institute of Fundamental Research), Andrea Botteon (Leiden University), Gianfranco Brunetti (Institute of Radio Astronomy, INAF), Rossella Cassano (IRA-INAF), Tiziana Venturi (IRA-INAF), Daniele Dallacasa (IRA-INAF), Julius Donnert (IRA-INAF)
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : We present new results from the multi-band observations with the Upgraded Giant Metrewave Radio Telescope (uGMRT) towards the extreme galaxy cluster named El Gordo. It is the most massive cluster at the redshift of 0.87 and was discovered through Sunyaev-Zeldovich surveys. It is a merging cluster with the distribution of X-rays that shows presence of two filamentary features called "tails". The radio halo and radio relics were discovered at 1.4 GHz. I will present the most sensitive low frequency images of the radio halo and the relics in this cluster using the Upgraded GMRT using our data analysis pipeline called "CAPTURE". We spectrally characterise the radio halo and the relics in this system for the first time over the wide band and interpret the results in the context of the particle re-acceleration models at work at this high redshift.