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6th ICM Theory and Computation Workshop

15–19 Aug 2022
Niels Bohr Institute
Europe/Copenhagen timezone

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Session

Tuesday afternoon: Thermal instability & multiphase ICM

16 Aug 2022, 13:45
Auditorium A (Niels Bohr Institute)

Auditorium A

Niels Bohr Institute

Blegdamsvej 17 Copenhagen

Conveners

Tuesday afternoon: Thermal instability & multiphase ICM

  • Mark Voit (Michigan State University)

Presentation materials

There are no materials yet.

  1. 37. Cloudy with a Chance of Rain: Accretion Braking of Cold Clouds
    S. Peng Oh (UCSB)
    16/08/2022, 13:45

    I discuss how turbulent mixing layers in infalling cold clouds serves as a drag force which can be more efficient than standard hydrodynamic drag. In a gravitational field, this leads to a terminal velocity which is smaller than standard terminal velocity, and can explain the sub-virial infall of filaments seen in galaxy clusters.

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  2. 75. Stratified and multiphase turbulence in the intracluster medium
    Prateek Sharma (IISc Bangalore)
    16/08/2022, 14:10

    The intracluster medium (ICM) is stratified so Kolmogorov’s picture of isotropic/homogeneous turbulence needs to be modified. Similarly, cool cores show multiphase gas with cold/dense clouds embedded in the diffuse hot ICM. I shall present results from idealized stratified turbulence simulations and idealized multiphase periodic box simulations with heating and cooling. I shall present common...

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  3. 70. The problems of energy transport and its multi-scale impact in the intracluster medium
    Prakriti Pal Choudhury (Institute of Astronomy, University of Cambridge)
    16/08/2022, 14:35

    Energy transport across a wide range of dynamical scales in the intracluster medium is one of the most interesting topics in current research and future interest. Hot baryons, visible in the X-rays, need to be stably sustained against radiative cooling over a large inner fraction of the cluster virial radius. A historical motivation has been the lack of sufficient observed cold gas in the...

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  4. 71. Cooling & the Origins of Cluster Atmospheres (via Zoom)
    Brian McNamara (Physics & Astronomy, University of Waterloo)
    16/08/2022, 15:45

    The conditions leading to large reservoirs of molecular clouds and star formation in central cluster galaxies are determined by atmospheric conditions on large scales. The thermodynamic properties of cooling core and non-cooling core cluster atmospheres diverge at radii approaching R_2500, or roughly 400 kpc radius in a 10E14 solar mass cluster. These conditions are driven
    by an excess of...

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  5. 54. Dynamics of a turbulent, multiphase medium (via Zoom)
    Max Gronke (MPA)
    16/08/2022, 16:10

    In this talk, I want to describe what sets the mass transfer between the phases in a turbulent, multiphase medium. I will show analytic and simulation results which suggest (i) a "survival criterion", (ii) mass growth rates, and (iii) a power-law mass function of the cold gas.

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