{"id":4538,"date":"2019-09-08T16:59:33","date_gmt":"2019-09-08T14:59:33","guid":{"rendered":"https:\/\/www.oa-cagliari.inaf.it\/seminari\/the-flickering-nuclear-activity-of-fornax-a\/"},"modified":"2019-09-08T16:59:33","modified_gmt":"2019-09-08T14:59:33","slug":"the-flickering-nuclear-activity-of-fornax-a","status":"publish","type":"seminari","link":"https:\/\/www.oa-cagliari.inaf.it\/en\/seminars\/the-flickering-nuclear-activity-of-fornax-a\/","title":{"rendered":"The Flickering Nuclear Activity of Fornax A"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1664\" src=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019120510570406684-300x251.png\" alt=\"\" width=\"300\" height=\"251\" srcset=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019120510570406684-300x251.png 300w, https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019120510570406684.png 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>No consensus has yet been reached on how galaxy interactions and AGN regulate the formation of early-type galaxies. The study of all phases of the circum-nuclear interstellar medium can be used to trace the interaction events that formed a galaxy as well as the interplay between the AGN and the gaseous ISM. Fornax A is the third nearby radio AGN and it is hosted by an early-type galaxy with a rich history of interaction events. In this talk, I will show new MeerKAT L-band and SRT C-band observations of Fornax A. These observations, together with broad-band observations between 84 MHz and 217 GHz, have been critical in unlocking the history of the nuclear activity of this source, revealing its rapid flickering (~10 Myr). In the center (&lt;30 kpc), we have detected, for the very first time, 10^8 Msun of HI gas, distributed in several non-rotating clouds (probably the remnant of a past merger). In the innermost regions (r&lt;6 kpc), clouds of HI, molecular and ionized hydrogen do not follow the regular rotation of the stellar body. In this talk, I will show how the kinematics and physical conditions of all phases of the circum-nuclear gas allow us to study the impact of the mechanical and radiative energy ejected from the AGN onto the ISM.      <\/p>\n<p>Image Credits: Dane Kleiner, Filippo Maccagni<\/p>\n","protected":false},"template":"","class_list":["post-4538","seminari","type-seminari","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari\/4538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari"}],"about":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/types\/seminari"}],"wp:attachment":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/media?parent=4538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}