University of Hertfordshire

From the same journal

Magnetic fields in galactic haloes

Research output: Contribution to journalLiterature review

Documents

  • 906106

    Accepted author manuscript, 408 KB, PDF document

  • M. Haverkorn
  • V. Heesen
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Original languageEnglish
Number of pages12
Pages (from-to)133-144
JournalSpace Science Reviews
Journal publication dateMay 2012
Volume166
Issue1-4
DOIs
Publication statusPublished - May 2012

Abstract

Magnetic fields on a range of scales play a large role in the ecosystems of galaxies, both in the galactic disk and in the extended layers of gas away from the plane. Observing magnetic field strength, structure and orientation is complex, and necessarily indirect. Observational data of magnetic fields in the halo of the Milky Way are scarce, and non-conclusive about the large-scale structure of the field. In external galaxies, various large-scale configurations of magnetic fields are measured, but many uncertainties about exact configurations and their origin remain. There is a strong interaction between magnetic fields and other components in the interstellar medium such as ionized and neutral gas and cosmic rays. The energy densities of these components are comparable on large scales, indicating that magnetic fields are not passive tracers but that magnetic field feedback on the other interstellar medium components needs to be taken into account.

ID: 949150