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- W4380135981 abstract "We present the first results of one extremely high resolution, non-radiative magnetohydrodynamical cosmological zoom-in simulation of a massive cluster with a virial mass M$_mathrm{vir} = 2.0 times 10^{15}$ solar masses. We adopt a mass resolution of $4 times 10^5$ M$_{odot}$ with a maximum spatial resolution of around 250 pc in the central regions of the cluster. We follow the detailed amplification process in a resolved small-scale turbulent dynamo in the Intracluster medium (ICM) with strong exponential growth until redshift 4, after which the field grows weakly in the adiabatic compression limit until redshift 2. The energy in the field is slightly reduced as the system approaches redshift zero in agreement with adiabatic decompression. The field structure is highly turbulent in the center and shows field reversals on a length scale of a few 10 kpc and an anti-correlation between the radial and angular field components in the central region that is ordered by small-scale turbulent dynamo action. The large-scale field on Mpc scales is almost isotropic, indicating that the structure formation process in massive galaxy cluster formation is suppressing memory of both the initial field configuration and the amplified morphology via the turbulent dynamo in the central regions. We demonstrate that extremely high-resolution simulations of the magnetized ICM are in reach that can resolve the small-scale magnetic field structure which is of major importance for the injection of and transport of cosmic rays in the ICM. This work is a major cornerstone for follow-up studies with an on-the-fly treatment of cosmic rays to model in detail electron-synchrotron and gamma-ray emissions." @default.
- W4380135981 created "2023-06-10" @default.
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- W4380135981 date "2023-06-07" @default.
- W4380135981 modified "2023-09-23" @default.
- W4380135981 title "Towards cosmological simulations of the magnetized intracluster medium with resolved Coulomb collision scale" @default.
- W4380135981 doi "https://doi.org/10.48550/arxiv.2306.04692" @default.
- W4380135981 hasPublicationYear "2023" @default.
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