Ancient cosmic ray halos from the central galaxy boost Perseus's cool core via inverse-Compton scattering, simultaneously explaining radio minihalo, giant halo, X-ray properties, and gamma-ray data without re-acceleration.
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Lagrangian tracers show mixing with low-entropy seeds drives most condensation in cluster cores; magnetic fields cause earlier divergence, higher vorticity, lower Mach numbers, and slower cold-cloud motion via tension.
XRISM data show a ~2 keV cooler gas phase with 300-400 km/s dispersion and bulk motion in the central Perseus cluster, distinct from the single-temperature gas beyond 60 kpc.
NGC 1270 and NGC 1272 host minicoronae at 0.99 keV and 0.63 keV extending 1.4 kpc and 1.2 kpc where thermal emission dominates and magnetic fields likely suppress viscous stripping to maintain balance among cooling, heating, stellar mass loss, stripping and accretion.
citing papers explorer
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An Inverse-Compton-Boosted Cool Core Unifies Perseus's Radio and X-ray Halos
Ancient cosmic ray halos from the central galaxy boost Perseus's cool core via inverse-Compton scattering, simultaneously explaining radio minihalo, giant halo, X-ray properties, and gamma-ray data without re-acceleration.
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XMAGNET -- Stir before serving: a Lagrangian perspective on mixing-driven condensation in the intracluster medium
Lagrangian tracers show mixing with low-entropy seeds drives most condensation in cluster cores; magnetic fields cause earlier divergence, higher vorticity, lower Mach numbers, and slower cold-cloud motion via tension.
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Probable Detection of a Cooler Gas Component in the Perseus Cluster with XRISM
XRISM data show a ~2 keV cooler gas phase with 300-400 km/s dispersion and bulk motion in the central Perseus cluster, distinct from the single-temperature gas beyond 60 kpc.
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The X-ray Coronae of two massive galaxies in the core of the Perseus cluster
NGC 1270 and NGC 1272 host minicoronae at 0.99 keV and 0.63 keV extending 1.4 kpc and 1.2 kpc where thermal emission dominates and magnetic fields likely suppress viscous stripping to maintain balance among cooling, heating, stellar mass loss, stripping and accretion.