Abstract Details
| Name: Sumana Nandi Affiliation: IIA, Bengaluru Conference ID: ASI2019_451 Title : ULIRGs are the possible progenitors of the powerful radio galaxies Authors and Co-Authors : Sumana Nandi, Mousumi Das and Dwarakanath K.S. Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Ultraluminous infrared galaxies (ULIRGs) with enormous bolometric luminosity (L>10^12 Lsun) are mostly formed through the merging of gas-rich spirals. Multiwavelength observations suggest that the power of ULIRGs are associated with starburst and AGN activities. Radio observations of ULIRGs are unaffected by the heavy dust obscuration and have the potential to probe the central structures. We performed GMRT 1280 MHz radio continuum observations of three ULIRGs in order to resolve their core- jet/outflow radio structures and hence to examine their evolution into radio loud elliptical galaxies. Here we present our results of these ULIRGs which are merger remnants and possible progenitors of the powerful radio galaxies. These GMRT observations detected extended diffuse emission which represents the outflows in these systems. The radio spectrum of one ULIRG shows characteristic, similar to that of compact steep spectrum or gigahertz peaked spectrum like sources. This result further represents that the source is going through an early stage of evolution of a classical double-lobed radio galaxy. |