TY - JOUR
T1 - Dynamics of magnetic flux loops in cooling-flow clusters of galaxies
AU - Zoabi, Essam
AU - Soker, Noam
AU - Regev, Oded
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1998/5/21
Y1 - 1998/5/21
N2 - 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.
AB - 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.
KW - Galaxies: clusters: general
KW - Galaxies: cooling flows
KW - Galaxies: magnetic fields
KW - Intergalactic medium
KW - MHD
UR - http://www.scopus.com/inward/record.url?scp=0041313513&partnerID=8YFLogxK
U2 - 10.1046/j.1365-8711.1998.01383.x
DO - 10.1046/j.1365-8711.1998.01383.x
M3 - 文章
AN - SCOPUS:0041313513
VL - 296
SP - 579
EP - 584
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 3
ER -