The distribution of mean and fluctuating magnetic fields in the multi-phase ISM

Abstract

We explore the effects of the multi-phase structure of the interstellar medium (ISM) on galactic magnetic fields. Basing our analysis on compressible magnetohydrodynamic (MHD) simulations of supernova-driven turbulence in the ISM, we investigate the properties of both the mean and fluctuating components of the magnetic field. We find that the mean magnetic field preferentially resides in the warm phase and is generally absent from the hot phase. The fluctuating magnetic field does not show such pronounced sensitivity to the multi-phase structure.

arXiv comment5 pages, 4 figures

References in corpus (11)

• Astrophysical magnetic fields and nonlinear dynamo theory
• The Interstellar Environment of our Galaxy
• Global Dynamical Evolution of the ISM in Star Forming Galaxies - I. High Resolution 3D HD and MHD Simulations: Effect of the Magnetic Field
• Vertical structure of a supernova-driven turbulent magnetized ISM
• Direct simulations of a supernova-driven galactic dynamo
• The Distribution of Pressures in a Supernova-Driven Interstellar Medium. I. Magnetized Medium
• The supernova-regulated ISM. I. The multi-phase structure
• The supernova-regulated ISM. II. The mean magnetic field
• Magnetic Fields in the Milky Way
• Dynamo saturation in direct simulations of the multi-phase turbulent interstellar medium
• The Origin of the Hot Gas in the Galactic Halo: Testing Galactic Fountain Models' X-ray Emission

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