franco_vazzaNow also on arxiv: Magnetic fields and relativistic electrons fill entire galaxy cluster led by A. Botteon. 5- 10% of turbulent energy -> CRs https://arxiv.org/abs/2211.01493 with @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] published in @[email protected]
Some interesting outtakes of the #magcow simulated cluster that we used for @[email protected] 's paper on A2255 in @[email protected] , but did not make it to the final version.
The cluster has multiple accretions through filaments, and a major merger https://t.co/JWO2ucZ7tq
The cluster has multiple accretions through filaments, and a major merger https://t.co/JWO2ucZ7tq
John F. WuAs in most simulated cluster, the combination of minor and major accretions launches shock waves and boosts dynamo amplification at all times.
This is the evolving temperature and magnetic field in a plane crossing an upper half of it.
(10Gyr look fast)
This is the evolving temperature and magnetic field in a plane crossing an upper half of it.
(10Gyr look fast)
As a result, the cluster is surrounded by radio emitting structures (like relics) at all scales
Through Helmoltz-Hodge filtering we got the energy flux associated with the compressive and solenoidal part of the turbulent velocities - which may alternative prevail across the cluster, and produce different flavours of Fermi II re-acceleration of electrons.
On top of this, there also is dissipation by shock waves - we think directly linked to radio relic emission.When present (blue colors) the shock dissipation usually dominates - we think, also the radio emission.
