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A Survey of Magnetogene​​​​sis Models
We explored the evolution and outcome of more than 20 combinations of seeding models for extragalactic magnetic fields and gas physics.
The reference volume is a 803 Mpc3 region simulated with 10243 cells and dark matter particles using ENZO-MHD ("Dedner cleaning").
Here we give access to some of the important "clean" data, including derived quantities that globally describes the z=0 results of most significant models.
More details and results are presented in this article.
  1. Phillips@mail.com
    Primordial seeding
    (runs "P" and "Pz2")
    The initial magnetic fields seed is a uniform 1nG. The gas evolves neglecting gas cooling and star formation.
  2. Phillips@mail.com
    Astrophysical seeding
    (runs "CSF3", "CSFBH3" and "CSFBH5")
    Magnetic fields are injected by stellar and/or black hole feedback. Radiative gas cooling and metal fields.
  3. Phillips@mail.com
    Dynamo growth
    (run "DYN6")
    Subgrid dynamo model for amplification of negligible primordial seed fields. The gas evolves in a non-radiative way.

Data

Data

Data

3-dimensional power spectra

Volume distribution function of B-fields at z=0

Data

Data

Cosmic star formation history

Average B-field/density relation for models

Data

Data
  1. Resources
    These simulations have been run on the Piz-Daint cluster at CSCS (Lugano, project ID s701, s805).
  2. Papers
  3. Contributors
    F. Vazza, M. Brueggen, C. Gheller, S. Hackstein. D. Wittor, P. M. Hinz
1. "Simulations of extragalactic magnetic fields and of their observables", Vazza, Bruggen, Gheller, Hackstein, Wittor, Hinz in Classical and Quantum Gravity, Special Issue