Cosmic-ray propagation in the solar neighborhood

Details Cosmic-ray propagation in the solar neighborhood Cosmic-ray propagation in the solar neighborhood

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..827g&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Nov. 1984, p. 827-832) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Nov.-Dec

Astronomy and Astrophysics

Astronomy

1

Galactic Cosmic Rays, Particle Diffusion, Sun, Anisotropy, Density Distribution, Diffusion Coefficient, High Energy Electrons, Interstellar Matter

Scientific paper

The propagation of cosmic rays (CRs) in the region within 1 kpc of the sun is investigated on the basis of published observational data on the CR anisotropy, the time variation of CRs after nearby outbursts, and the spectrum of energetic electrons. Sources considered include Loop I (as defined by Nishimura et al., 1979) with R = 50 pc and age 30,000 yr, the Lupus loop (400 pc and 38,000 yr), and Vela (400 pc and 11,000 yr). The local diffusion coefficient for particles of energy 1-10 TeV is estimated as (1-10) x 10 to the 29th sq cm/s and shown to be in agreement with a Galactic model with mass 6 x 10 to the 42nd g and a 15-kpc halo, suggesting that CR-source parameters and CR-diffusion conditions in the solar neighborhood are the same as those in the Galaxy generally.

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