Cosmic magnetic fields with MASCLET: an application to galaxy clusters

Abstract

We describe and test a new version of the adaptive mesh refinement (AMR) cosmological code MASCLET. The new version of the code includes all the ingredients of its previous version plus a description of the evolution of the magnetic field under the approximation of the ideal magneto-hydrodynamics (MHD). To preserve the divergence-free condition of MHD, the original divergence cleaning algorithm of Dedner et al. (2002) is implemented. We present a set of well-known 1D and 2D tests, such as several shock-tube problems, the fast rotor and the Orszag-Tang vortex. The performance of the code in all the tests is excellent with estimated median relative errors of $\nabla \cdot \mathbf{B}$ in the 2D tests smaller than $5\times 10^{-5}$ for the fast rotor test, and $5\times 10^{-3}$ for the Orszag-Tang vortex. As an astrophysical application of the code, we present a simulation of a cosmological box of 40 comoving Mpc side length in which a primordial uniform comoving magnetic field of strength 0.1 nG is seeded. The simulation shows how the magnetic field is channelled along the filaments of gas and is concentrated and amplified within galaxy clusters. Comparison with the values expected from pure compression reveals an additional amplification of the magnetic field caused by turbulence in the central region of the cluster. Values of the order of $\sim 1\mu$G are obtained in clusters at $z\sim 0$ with median relative errors of $\nabla \cdot \mathbf{B}$ below 0.4\%. The implications of a proper description of the dynamics of the magnetic field and their possible observational counterparts in future facilities are discussed.

arXiv comment14 pages, 13 figures, accepted for publication in MNRAS

References in corpus (40)

• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• Cosmological SPH simulations: A hybrid multi-phase model for star formation
• Baryonic Features in the Matter Transfer Function
• Cosmological Hydrodynamics with Adaptive Mesh Refinement: a new high resolution code called RAMSES
• Astrophysical magnetic fields and nonlinear dynamo theory
• Enzo: An Adaptive Mesh Refinement Code for Astrophysics
• Adaptive Refinement Tree - a new high-resolution N-body code for cosmological simulations
• The Atacama Large Millimeter/submillimeter Array
• The origin, evolution and signatures of primordial magnetic fields
• A High Order Godunov Scheme with Constrained Transport and Adaptive Mesh Refinement for Astrophysical MHD
• The Coma cluster magnetic field from Faraday rotation measures
• Lower limit on the strength and filling factor of extragalactic magnetic fields
• Magnetohydrodynamics on an unstructured moving grid
• Numerical Magnetohydrodynamics in Astrophysics: Algorithm and Tests for One-Dimensional Flow
• A Divergence-Free Upwind Code for Multidimensional Magnetohydrodynamic Flows
• High Order Upwind Schemes for Multidimensional Magnetohydrodynamics
• Planck 2015 results. XIX. Constraints on primordial magnetic fields
• An HLLC Solver for Relativistic Flows -- II. Magnetohydrodynamics
• Resolved magnetic dynamo action in the simulated intracluster medium
• Magnetohydrodynamic Simulations of Disk Galaxy Formation: the Magnetization of The Cold and Warm Medium
• Magnetic Field Amplification in Galaxy Clusters and its Simulation
• Simulations of extragalactic magnetic fields and of their observables
• Robustness of Cosmological Simulations I: Large Scale Structure
• Constrained Hyperbolic Divergence Cleaning for Smoothed Particle Magnetohydrodynamics
• A Second-Order Unsplit Godunov Scheme for Cell-Centered MHD: the CTU-GLM scheme
• Cosmological MHD simulation of a cooling flow cluster
• Cosmological AMR MHD with Enzo
• Imprint of Intergalactic Shocks on the Radio Sky
• The large-scale properties of simulated cosmological magnetic fields
• Dynamical evolution of magnetic fields in the intracluster medium
• A new multidimensional AMR Hydro+Gravity Cosmological code
• The structure of cosmic voids in a LCDM Universe
• High-order Magnetohydrodynamics for Astrophysics with an Adaptive Mesh Refinement Discontinuous Galerkin Scheme
• Constrained-Transport Magnetohydrodynamics with Adaptive-Mesh-Refinement in CHARM
• A divergence-cleaning scheme for cosmological SPMHD simulations
• Is ram-pressure stripping an efficient mechanism to remove gas in galaxies?
• Observations of magnetic fields in regular and irregular clusters
• Multi-wavelength mock observations of the WHIM in a simulated galaxy cluster
• Exact Riemann solver for ideal magnetohydrodynamics that can handle all types of intermediate shocks and switch-on/off waves
• SPMHD simulations of Structure Formation

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