Raining on black holes and massive galaxies: the top-down multiphase condensation model

Raining on black holes and massive galaxies: the top-down multiphase condensation model

Abstract The plasma haloes filling massive galaxies, groups and clusters are shaped by active galactic nucleus (AGN) heating and subsonic turbulence (σ v  ∼ 150 km s−1), as probed by Hitomi. Novel 3D high-resolution simulations show the soft X-ray, keV hot plasma cools rapidly via radiative emission...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2017-04, Vol.466 (1), p.677-704
Hauptverfasser: Gaspari, M., Temi, P., Brighenti, F.
Format: Artikel
Sprache:eng
Schlagworte:
Accretion
Accretion disks
Active galactic nuclei
Astronomy
Condensation
Emission
Filaments
Galaxies
Luminosity
Star & galaxy formation
Turbulence
Turbulent flow
Viscosity
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Zusammenfassung:Abstract The plasma haloes filling massive galaxies, groups and clusters are shaped by active galactic nucleus (AGN) heating and subsonic turbulence (σ v  ∼ 150 km s−1), as probed by Hitomi. Novel 3D high-resolution simulations show the soft X-ray, keV hot plasma cools rapidly via radiative emission at the high-density interface of the turbulent eddies, stimulating a top-down condensation cascade of warm 104 K filaments. The kpc-scale ionized (optical/ultraviolet) filaments form a skin enveloping the neutral filaments (optical/infrared/21 cm). The peaks of the warm filaments further condense into cold molecular clouds (
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stw3108