Expected Fluxes of H+ Pickup Ions in the Inner Heliosphere During Various Phases of Solar Cycle

The objective of our work was to study latitudinal and time-dependent effects in H(+) pickup ion (PUI) fluxes, potentially interesting with respect to Ulysses data analysis. Assuming models of radiation pressure and hydrogen ionization rates based on long-term multispacecraft observations (Bzowski,...

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Bibliographic Details
Published in:Space science reviews 2001-05, Vol.97 (1-4), p.417-421
Main Authors: Bzowski, Maciej, Ruciski, Daniel, Summanen, Tuula, Kyrölä, Erkki
Format: Article
Language:English
Online Access:Get full text
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Summary:The objective of our work was to study latitudinal and time-dependent effects in H(+) pickup ion (PUI) fluxes, potentially interesting with respect to Ulysses data analysis. Assuming models of radiation pressure and hydrogen ionization rates based on long-term multispacecraft observations (Bzowski, 2001, and references therein), we calculate a time- and latitude-dependent distribution of interstellar neutral hydrogen in a plane perpendicular to the gas inflow direction. Based on this density model we compute expected fluxes of H(+) PUIs during various phases of recent solar cycles at various heliographic latitudes to check the amplitude of both types of variations at heliocentric distances relevant for Ulysses/SWICS observations (Gloeckler et al., 1993; Gloeckler, 1996). (Author)
ISSN:0038-6308
1572-9672
DOI:10.1023/A:1011878412180