Mathematics – Probability
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..779a&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 32, June 1984, p. 779-784. NASA-supported research.
Mathematics
Probability
7
Gas Ionization, Interstellar Gas, Solar Electrons, Solar Wind, Helium, Hydrogen, Probability Distribution Functions
Scientific paper
In the present consideration of the probability of interstellar wind H and He atoms' survival of ionization by solar wind electrons, a dual temperature electron distribution is for the first time used to model the effects of 'core' (10 eV) and 'halo' (60 eV) solar electrons on survival probabilities. The interstellar wind has a higher probability of surviving halo rather than core electron ionization only at heliocentric distances smaller than 0.5 AU. For larger distances, halo and core survival probabilities are similar, and similarly insensitive to changes in (1) interstellar wind velocity at infinity, (2) the solar ratio of radiation to gravitational force, and (3) solar electron temperatures. At distances smaller than 0.5 AU, however, sensitivity significantly increases.
Askew S. D.
Kunc J. A.
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