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Seminars

A journey into the Perseus cluster of galaxies

Sala de Titulación, Facultad de Ingeniería y Ciencias UDP | December 13 11:00
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Dr. Marie-Lou Gendron Marsolais
ESO

Abstract:

Jets created from accretion onto supermassive black holes release relativistic particles on large distances. These strongly affect the intracluster medium when located in the center of a brightest cluster galaxy. On the other hand, the hierarchical merging of subclusters and groups, from which cluster originate, also generates perturbations into the intracluster medium through shocks and turbulence, constituting a potential source of reacceleration for these particles. In this talk, I will present deep multi-scale low radio frequency (230-470 MHz) observations of the Perseus cluster from the Karl G. Jansky Very Large Array, probing the non-thermal emission from the old particle population of the AGN outflows. Our observations of this nearby relaxed cool core cluster have revealed a multitude of new structures associated with the radio lobes and the mini-halo. Furthermore, I will analyze the interplay between these radio structures and the optical filaments of NGC 1275, the Perseus cluster’s brightest galaxy, based on observations with the optical imaging Fourier transform spectrometer SITELLE (CFHT).