The Colloquium takes place every Wednesday at 11:15 AM - Warsaw Copernicus Astronomical Centre online by means of Zoom platform. The Colloquium is given in English and chaired by dr Stanisław Bajtlik (bajtlik@camk.edu.pl). People from outside of the Copernicus Center are very welcome to participate. For technical detailes please contact Dr. Stanislaw Bajtlik.
Pratik Dabhade (National Center for Nuclear Research (NCBJ), Warsaw)
Extragalactic radio sources powered by active galactic nuclei (AGN) are extraordinary signposts of cosmic evolution. They trace the growth of supermassive black holes, shape their host galaxies through feedback, and illuminate the magnetised filaments of the large-scale cosmic web. In this seminar, I will present an overview of my research on these systems, spanning a wide range of scales and epochs - from giant and double-double radio galaxies in the nearby Universe to powerful high-redshift quasars and rare, unusual sources such as Odd Radio Circles. Through these studies, we gain insight into jet physics, episodic activity, and environmental influence. I will also discuss the role of modern radio continuum surveys - from LOFAR, MeerKAT, ASKAP, and the JVLA to the upcoming SKA, in transforming our understanding of the radio Universe. These surveys now offer unprecedented sensitivity and resolution across wide frequency ranges, enabling population studies of diverse extragalactic radio sources from star-forming galaxies and AGN to large-scale diffuse structures with a level of detail never achieved before. Finally, I will introduce the recently approved DHRUV survey, the first deep, wide-sky survey with the upgraded GMRT (uGMRT), designed to map the Euclid Deep Field North at unprecedented depth. This project aims to bridge the observational gap between LOFAR and GHz facilities, offering new opportunities to probe galaxy and AGN evolution, cosmic magnetism, feedback, and large-scale structure formation. Together, these efforts form a coherent framework for understanding how radio AGN connect small-scale jet physics to the grand structure of the Universe, setting the stage for the next generation of discoveries with the SKA.
Journal Club takes place on Mondays at 11:15 AM in the Seminar Room. The presentation is given in English and is chaired by Journal Club Coordinators. Anyone interested in giving a Journal Club talk is encouraged to contact the email: journalclub(@camk.edu.pl).
Ricardo Salinas (NCAC, Warsaw)
Based on: https://arxiv.org/abs/2508.19998
