Problems in suppressing cooling flows in clusters of galaxies by global heat conduction

Noam Soker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

I use a simple analytical model to show that simple heat conduction models cannot significantly suppress cluster cooling flows. I build a static medium where heat conduction globally balances radiative cooling, and then perturb it. I show that a perturbation extending over a large fraction of the cooling flow region and with an amplitude of ∼10 per cent, will grow to the non-linear regime within a Hubble time. Such perturbations are reasonable in clusters that frequently experience mergers and/or active galactic nuclei activity. This result strengthens previous findings which show that a steady solution does not exist for a constant heat conduction coefficient.

Original languageEnglish
Pages (from-to)463-466
Number of pages4
JournalMonthly Notices of the Royal Astronomical Society
Volume342
Issue number2
DOIs
StatePublished - 21 Jun 2003
Externally publishedYes

Keywords

  • Cooling flows
  • Galaxies: Clusters: General
  • Intergalactic medium
  • X-rays: Galaxies: Clusters

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