Magnetic field in galaxies, galaxy clusters, and intergalactic space

descriptionPublicationkeyboard_double_arrow_right Article 13 Dec 2005 English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 72 (issn: 1550-7998, eissn: 1550-2368,

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Authors: Arnon Dar; A. De Rújula;

doi: 10.1103/physrevd.72.123002

Magnetic field in galaxies, galaxy clusters, and intergalactic space

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Abstract

Magnetic fields of unknown origin appear to permeate the Universe on all large scales. We suggest that the winds and cosmic rays, which are produced by the spherical ejecta and jets from supernova explosions, magnetize the interstellar medium in galaxies, the intracluster medium in galaxy clusters, and the intergalactic space. We show that, if the cosmic rays generate magnetic fields in rough energy equipartition with the cosmic rays, the predicted magnetic-field strengths coincide with the ones observed.

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