Physical cool-core condensation radius in massive galaxy clusters
Journal
Date Issued
2023
Author(s)
Abstract
We investigate the properties of cool cores in an optimally selected sample
of 37 massive and X-ray-bright galaxy clusters, with regular morphologies,
observed with Chandra. We measured the density, temperature, and abundance
radial profiles of their intracluster medium (ICM). From these independent
quantities, we computed the cooling (tcool) free-fall (tff), and turbulence
(teddy) timescales as a function of radius. By requiring the profile-crossing
condition, tcool=teddy=1, we measured the cool-core condensation radius Rccc,
within which the balancing feeding and feedback processes generate the
turbulent condensation rain and related chaotic cold accretion (CCA). We also
constrained the complementary (quenched) cooling flow radius Rqcf, obtained via
the condition tcool=25Xtff, that encompasses the region of thermally unstable
cooling. We find that in our cluster sample and in the limited redshift range
considered (1.3E14
Volume
674
Start page
A102
Issn Identifier
0004-6361
Ads BibCode
2023A&A...674A.102W
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
aa44138-22.pdf
Description
Pdf editoriale
Size
2.27 MB
Format
Adobe PDF
Checksum (MD5)
d03cb928c584aabd289695e323b89f4d