Auroral and photoelectron fluxes in cometary ionospheres

Details Auroral and photoelectron fluxes in cometary ionospheres Auroral and photoelectron fluxes in cometary ionospheres

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...85..216b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 85, May 1990, p. 216-228. Research supported by ISRO and UGCI.

Computer Science

30

Auroras, Cometary Magnetospheres, Electron Flux Density, Photoelectrons, Electron Energy, Electron Impact, Giotto Mission, Planetary Ionospheres, Vega Project, Comets, Ionosphere, Auroras, Electrons, Flux, Distance, Energy, Spectra, Comparisons, Theoretical Studies, Calculations, Comae, Photoionization, Altitude

Scientific paper

The analytical yield spectrum method has been used to ascertain photoelectron and auroral electron fluxes in cometary ionospheres, with a view to determining the effects of cometocentric distances, solar zenith angle, and solar minimum and maximum conditions. Auroral electron fluxes are thus calculated for monoenergetic and observed primary electron spectra; auroral electrons are found to make a larger contribution to the observed electron spectrum than EUV-generated photoelectrons. Good agreement is established with extant theoretical works.

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