Hidden cooling flows - IV. More details on Centaurus and the efficiency of AGN feedback in clusters

A. C. Fabian, G. J. Ferland, J. S. Sanders, H. R. Russell, B. R. Mcnamara, C. Pinto, J. Hlavacek-Larrondo, S. A. Walker, L. R. Ivey, M. McDonald

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Cooling flows are common in galaxy clusters which have cool cores. The soft X-ray emission below 1 keV from the flows is mostly absorbed by cold dusty gas within the central cooling sites. Further evidence for this process is presented here through a more detailed analysis of the nearby Centaurus cluster and some additional clusters. Predictions of JWST near and mid-infrared spectra from cooling gas are presented. [Ne vi] emission at m should be an important diagnostic of gas cooling between 6 and. The emerging overall picture of hidden cooling flows is explored. The efficiency of active galactic nucleus feedback in reducing the total cooling rate in cool cores is shown to be above 50 per cent for many clusters but is rarely above 90 per cent. The reduction is mostly in outer gas. Cooling dominates in elliptical galaxies and galaxy groups that have mass flow rates below about and in some massive clusters where rates can exceed.

Original languageEnglish
Pages (from-to)2173-2188
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume535
Issue number3
DOIs
StatePublished - Dec 1 2024

Bibliographical note

Publisher Copyright:
© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Keywords

  • clusters
  • galaxies
  • intracluster medium

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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