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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20240220T123000
DTEND;TZID=Atlantic/Canary:20240220T133000
UID:iactalks-1739
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1739
CREATED:2024-02-20T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:A radio eye on galaxy clusters
DESCRIPTION:A radio eye on galaxy clusters\nMarie-Lou Gendron-Marsolais\n\n
  \nThe central black hole of active galaxies accretes large amounts o
 f matter and powers jets of relativistic particles that can propagate beyo
 nd the host galaxy. Radio galaxies are particularly bright at ∼ GHz fr
 equencies, when the accelerated electrons interact with the magnetic field
  and produce strong synchrotron emission. Such galaxies residing in cluste
 rs evolve in a hot, diffuse, X-ray emitting plasma (the intracluster mediu
 m, ICM) which is constantly perturbed, both internally by the outbursts of
  the central AGN, and externally from interactions with other clusters, gr
 oups, and individual galaxies. The ram pressure provided by the relative m
 otion between a radio galaxy and the ICM can bend radio jets, producing a 
 wide variety of distorted morphologies, clearly distinguishable from stand
 ard double radio galaxies: the so-called "bent-jet radio galaxies". The ad
 vent of high-sensitivity low radio frequency facilities (such as e.g. VLA,
  GMRT, LOFAR, MWA, MeerKAT, ASKAP) has recently shed new light on our conc
 eption of galaxy cluster's environments, resolving bent-jet radio galaxies
  and unveiling diffuse structures extending on large distances without a d
 irect association with a host galaxy ("mini-halos", "halos", or "relics"),
  which origin remain unclear. Overall, the complete picture of diffuse rad
 io emission in these environments is complex and the link between those va
 rious sources and the properties of clusters is not yet clear.\nLocated at
  a luminosity distance of 78.4 Mpc, the notorious Perseus cluster of galax
 ies has been the center of numerous discoveries, its proximity allowing hi
 gh sensitivity and high resolution studies, revealing the physics of clust
 ers at unprecedented levels of details. In this talk, I will present an ov
 erview of the deep multi-scale low radio frequency observations of the Per
 seus cluster obtained from the Karl G. Jansky Very Large Array. These obse
 rvations have revealed a multitude of new structures associated with the r
 adio lobes of several galaxies and the central mini-halo. Such work is pav
 ing the way for future radio telescopes such as the SKAO, which will uncov
 er many more radio sources in these environments and open a new window on 
 the unknown radio universe.\n \nZoom link: https://rediris.zoom.us/j/
 99761131815?pwd=QUN0ckRSZWJZQkh1aUxvSU9UNmtJUT09Meeting ID: 997 6113 1815\
 nPasscode: 164994
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