Dynamics of magnetic flux loops in cooling-flow clusters of galaxies

Essam Zoabi*, Noam Soker, Oded Regev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We study the dynamics of magnetic flux loops embedded in an intracluster medium. In order to perform the calculations semi-analytically we make several simplifying assumptions, which include a treatment of only the two ends of the magnetic flux loops, assuming a simple relation between the density and the magnetic field and neglecting heat conduction. Our results indicate that the existence of a large number of magnetic flux loops can naturally lead to a multiphase intracluster medium. A multiphase intracluster medium is inferred from observations of the mass deposition rate in many cooling-flow clusters. The loops will be observed as 'filaments' having different density and temperature from their surroundings, namely X-ray filaments. X-ray filaments have been discovered in a few cases, although their discovery is controversial. Our model predicts that many such X-ray filaments will be discovered with future high-spatial-resolution X-ray telescopes, such as AXAF.

Original languageEnglish
Pages (from-to)579-584
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume296
Issue number3
DOIs
StatePublished - 21 May 1998
Externally publishedYes

Keywords

  • Galaxies: clusters: general
  • Galaxies: cooling flows
  • Galaxies: magnetic fields
  • Intergalactic medium
  • MHD

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