Consequences of a lifetime greater than 10 to the 7th power years for galactic cosmic rays

Details Consequences of a lifetime greater than 10 to the 7th power years for galactic cosmic rays Consequences of a lifetime greater than 10 to the 7th power years for galactic cosmic rays

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...208..900j&link_type=abstract

Astrophysical Journal, vol. 208, Sept. 15, 1976, pt. 1, p. 900-902.

Astronomy and Astrophysics

Astrophysics

70

Astronomical Models, Cosmic Rays, Galactic Radiation, Magnetohydrodynamic Waves, Radiative Lifetime, Disks (Shapes), Galactic Structure, Halos, Particle Flux Density, Spiral Galaxies

Scientific paper

The implications of recent determinations of the cosmic-ray lifetime are discussed. It is concluded that the observations are consistent with a 'dynamical halo' model in which cosmic rays are confined in an outward-moving galactic halo by self-generated hydromagnetic waves. Alternative models which do not incorporate a halo, but which have the cosmic rays propagate in regions of reduced density in the galactic disk, are also briefly discussed.

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