20–28 Mar 2025
Emperors Palace Hotel Casino Convention Resort
Africa/Johannesburg timezone

New insights on classical radio galaxies from MeerKAT and uGMRT

Not scheduled
15m
Emperors Palace Hotel Casino Convention Resort

Emperors Palace Hotel Casino Convention Resort

64 Jones Rd, Kempton Park, Johannesburg, 1620
Poster

Speaker

Ms Portia Legodi (University of South Africa)

Description

The morphology of extragalactic radio sources of high and low luminosity has been the subject of a classification method for over four decades, leading to a comprehensive understanding of extragalactic radio sources. The study of FR radio galaxies is still a hot topic. The advent of the SKA pathfinders and precursors has considerably improved the imaging sensitivity over a broad range of angular scales and frequencies, leading to the discovery of many new features in the morphology of radio galaxies. We selected a sample of 17 radio galaxies from the FR0, FRI and FRII classes and are studying them with the current generation of radio interferometers. Our goals are to revisit the morphological classification and investigate the properties and origin of the new filamentary features that are becoming common within and outside the radio lobes and suggestive of unexplored interactions between the radio plasma and the external medium. To this aim, we use the μJy sensitivity offered by the combination of uGMRT and MeerKAT, covering the frequency range from 500−1712 MHz. We share results on FR I and FR II samples, total intensity, polarization, and spectral index images and provide preliminary considerations.

Stream Science

Primary authors

Prof. Oleg Smirnov (Rhodes University) Ms Portia Legodi (University of South Africa) Dr Tiziana Venturi (Istituto di Radioastronomia, INAF)

Presentation materials

There are no materials yet.