Magnetic fields and the cosmic ray e/p ratio. Clues from gamma-ray observations of the Magellanic Clouds

Details Magnetic fields and the cosmic ray e/p ratio. Clues from gamma-ray observations of the Magellanic Clouds Magnetic fields and the cosmic ray e/p ratio. Clues from gamma-ray observations of the Magellanic Clouds

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279l..17p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 1, p. L17-L20

Astronomy and Astrophysics

Astrophysics

18

Astronomical Models, Cosmic Rays, Cosmology, Gamma Rays, Interstellar Magnetic Fields, Magellanic Clouds, Mathematical Models, Radio Emission, Electrons, Flux Density, Protons, Ratios, Solar Neighborhood

Scientific paper

We reanalyze the gamma emission from the Magellanic Clouds in comparison to their radio emission. By taking the energy density in cosmic ray electrons into account we show that the energy equipartition between magnetic field and cosmic rays is not necessarily violated in these objects, contrary to the findings of Chi and Wolfendale (1993). The cosmic ray e/p ratio has to be considerably larger than in the solar vicinity, implying that any model fit which uses e/p = 0.01 may lead to inadequate conclusions.

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