Phase propagation of the solar modulation of galactic cosmic rays

Details Phase propagation of the solar modulation of galactic cosmic rays Phase propagation of the solar modulation of galactic cosmic rays

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.2914f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, March 1, 1986, p. 2914-2916. NASA-supported research.

Physics

6

Galactic Cosmic Rays, Phase Velocity, Solar Activity Effects, Sunspot Cycle, Heliosphere, Modulation, Propagation Velocity, Radiant Flux Density

Scientific paper

The phase of the 11-year galactic cosmic ray variation, due to a varying rate of emission of long-lived, propagating regions of enhanced scattering, travels faster than the scattering regions themselves. The radial speed of the 11-year phase in the quasi-steady force field approximation is exactly twice the speed of the individual episodic decreases. A time-dependent numerical solution for 1-GeV protons at 1 and 30 AU gives a phase speed which is 1.85 times the propagation speed of the individual decreases.

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