Cosmic-ray confinement in radio bubbles by micromirrors

Robert J. Ewart; Patrick Reichherzer; Archie F.A. Bott; Matthew W. Kunz; Alexander A. Schekochihin

doi:10.1093/mnras/stae1578

Cosmic-ray confinement in radio bubbles by micromirrors

Robert J. Ewart, Patrick Reichherzer, Archie F.A. Bott, Matthew W. Kunz, Alexander A. Schekochihin

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Radio bubbles, ubiquitous features of the intracluster medium around active galactic nuclei, are known to rise buoyantly for multiple scale heights through the intracluster medium (ICM). It is an open question how the bubbles can retain their high-energy cosmic-ray content over such distances. We propose that the enhanced scattering of cosmic rays due to micromirrors generated in the ICM is a viable mechanism for confining the cosmic rays within bubbles and can qualitatively reproduce their morphology. We discuss the observational implications of such a model of cosmic-ray confinement.

Original language	English (US)
Pages (from-to)	2098-2107
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	532
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stae1578
State	Published - Aug 1 2024

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

convection
cosmic rays
diffusion
galaxies: clusters: intracluster medium

Access to Document

10.1093/mnras/stae1578

Cite this

@article{271a5b8cc13e4bbfa4e4474fd9add42c,

title = "Cosmic-ray confinement in radio bubbles by micromirrors",

abstract = "Radio bubbles, ubiquitous features of the intracluster medium around active galactic nuclei, are known to rise buoyantly for multiple scale heights through the intracluster medium (ICM). It is an open question how the bubbles can retain their high-energy cosmic-ray content over such distances. We propose that the enhanced scattering of cosmic rays due to micromirrors generated in the ICM is a viable mechanism for confining the cosmic rays within bubbles and can qualitatively reproduce their morphology. We discuss the observational implications of such a model of cosmic-ray confinement.",

keywords = "convection, cosmic rays, diffusion, galaxies: clusters: intracluster medium",

author = "Ewart, {Robert J.} and Patrick Reichherzer and Bott, {Archie F.A.} and Kunz, {Matthew W.} and Schekochihin, {Alexander A.}",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2024",

month = aug,

day = "1",

doi = "10.1093/mnras/stae1578",

language = "English (US)",

volume = "532",

pages = "2098--2107",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

TY - JOUR

T1 - Cosmic-ray confinement in radio bubbles by micromirrors

AU - Ewart, Robert J.

AU - Reichherzer, Patrick

AU - Bott, Archie F.A.

AU - Kunz, Matthew W.

AU - Schekochihin, Alexander A.

PY - 2024/8/1

Y1 - 2024/8/1

N2 - Radio bubbles, ubiquitous features of the intracluster medium around active galactic nuclei, are known to rise buoyantly for multiple scale heights through the intracluster medium (ICM). It is an open question how the bubbles can retain their high-energy cosmic-ray content over such distances. We propose that the enhanced scattering of cosmic rays due to micromirrors generated in the ICM is a viable mechanism for confining the cosmic rays within bubbles and can qualitatively reproduce their morphology. We discuss the observational implications of such a model of cosmic-ray confinement.

AB - Radio bubbles, ubiquitous features of the intracluster medium around active galactic nuclei, are known to rise buoyantly for multiple scale heights through the intracluster medium (ICM). It is an open question how the bubbles can retain their high-energy cosmic-ray content over such distances. We propose that the enhanced scattering of cosmic rays due to micromirrors generated in the ICM is a viable mechanism for confining the cosmic rays within bubbles and can qualitatively reproduce their morphology. We discuss the observational implications of such a model of cosmic-ray confinement.

KW - convection

KW - cosmic rays

KW - diffusion

KW - galaxies: clusters: intracluster medium

UR - http://www.scopus.com/inward/record.url?scp=85198928396&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85198928396&partnerID=8YFLogxK

U2 - 10.1093/mnras/stae1578

DO - 10.1093/mnras/stae1578

M3 - Article

AN - SCOPUS:85198928396

SN - 0035-8711

VL - 532

SP - 2098

EP - 2107

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Cosmic-ray confinement in radio bubbles by micromirrors

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this