REVIEW 8 cited by
Cluster Radio Relics as a Tracer of Shock Waves of the Large-Scale Structure Formation
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
We present evidence for the existence of shock waves caused by the formation of the large-scale structure. In some clusters of galaxies peripherally located sources of extended diffuse radio emission exist, the so-called cluster radio relics. They have steep radio spectra but no apparent cutoff, as old remnants of radio galaxies usually have. Therefore particle acceleration has to take place within them. We propose that shock structures of the cosmological large-scale matter flows are responsible for the acceleration of relativistic electrons: cluster accretion shocks and bow shocks of merger events. We develop a theory of radio plasma having traversed these shocks and compare it to observational data of nine radio relics (0038-096, 0917+75, 1140+203, 1253+275, 1712+64, 1706+78, 2006-56, 2010-57, 1401-33) and their host clusters (A85, A786, A1367, Coma, A2255, A2256, A3667, S753). The necessary accretion power, the spectral index of the radio spectrum, the acceleration efficiency of the shock, the diffusion coefficient in the post-shock region, and the predicted radio polarization in all of our examples fit into a coherent interpretation of the observational data. Since polarization measurements are available only for four sources, the predictions of our theory can be independently checked using other examples. The predicted values of the shock compression ratio, density and temperature of the infalling gas, magnetic field strength of the shocked and unshocked radio plasma are discussed within the frame of structure formation theory.
Forward citations
Cited by 8 Pith papers
-
Jellyfish Galaxies in Magnetic Fields: Insights from Numerical Simulations
Magnetized cluster winds strip more gas, smooth the tails, and shift tail star formation to the near disk, unlike unmagnetized winds that create distant star-forming clumps.
-
Multi-frequency Radio Observations of the Dissociative Cluster Merger CIZA J0107.7+5408
New VLA observations resolve the diffuse radio emission in the merging cluster CIZA J0107.7+5408 into two steep-spectrum subcluster components, one showing a 340 MHz edge coincident with a weak X-ray shock but no matc...
-
An upgraded GMRT and MeerKAT study of radio relics in the low mass merging cluster PSZ2 G200.95-28.16
A low-mass merging galaxy cluster hosts three polarized radio relics, with two relics implying shock Mach numbers near 3, plus a candidate radio ring, supporting an off-axis merger interpretation.
-
CRESCENDO II: Spectral cosmic rays with improved energy losses and realistic supernova seeding
CRESCENDO's spectral cosmic-ray solver now includes improved energy-loss processes, non-ultra-relativistic energy/pressure integrals, and supernova-remnant template injection.
-
The plethora of diffuse emission in Abell 2034 as revealed by MeerKAT polarization observations
MeerKAT polarization and spectral-index data reclassify Abell 2034's diffuse radio sources and favor a ~1 μG intracluster magnetic field (B ∝ n_e^0.5, normalized at R500).
-
The PICO-Cluster Project: presenting the galaxy cluster sample and studying magnetic field growth, Faraday rotation and Braginskii heating
Presents 24 AREPO+IllustrisTNG zoom-in simulations of clusters above 10^15 solar masses showing converged magnetic fields with volume-averaged plasma beta approximately 100 inside R200 after z~1.2, declining Faraday r...
-
Exploring the physics of ram pressure stripping with radio continuum observations in the SKA era
Perspective on using SKA-Low and SKA-Mid radio continuum to extend ram pressure stripping studies to southern clusters and z~0.5.
-
Probing Merger Shocks in Galaxy Clusters in the SKA Era
Review summarizing cluster merger shocks, radio relics from SKA pathfinders, and future SKA science cases for studying these phenomena.
Discussion (0). Continue with ORCID to comment.