X-ray active galactic nuclei in the core of the Perseus cluster

Abstract

We present a study of the X-ray emission from the nuclei of galaxies observed in the core of the Perseus cluster in a deep exposure with Chandra. Point sources are found coincident with the nuclei of 13 early-type galaxies, as well as the central galaxy NGC1275. This corresponds to all galaxies brighter than M_B = -18 in the Chandra field. All of these sources have a steep power-law spectral component and four have an additional thermal component. The unabsorbed power-law luminosities in the 0.5-7.0 keV band range from 8.10^38-5.10^40 erg/s. We find no simple correlations between the K band luminosity, or the FUV and NUV AB magnitudes of these galaxies and their X-ray properties. We have estimated the black hole masses of the nuclei using the K band M_BH-L_K relation and again find no correlation between black hole mass and the X-ray luminosity. Bondi accretion onto the black holes in the galaxies with mini-haloes should make them much more luminous than observed.

9 pages, 8 figures, accepted for publication in MNRAS

References in corpus (3)

• Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
• X-ray thermal coronae of galaxies in hot clusters -- ubiquity of embedded mini cooling cores
• Spectroscopic Confirmation of a Large AGN Population in Clusters of Galaxies

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• A synthesis model for AGN evolution: supermassive black holes growth and feedback modes
• AMUSE-Virgo I. Super-massive black holes in low-mass spheroids
• X-ray Point Sources and Radio Galaxies in Clusters of Galaxies
• Euclid: Early Release Observations -- Overview of the Perseus cluster and analysis of its luminosity and stellar mass functions
• The galaxy population within the virial radius of the Perseus cluster
• Discovery of five low luminosity active galactic nuclei at the centre of the Perseus cluster
• The X-ray Coronae of two massive galaxies in the core of the Perseus cluster