Table 1
Composition model for the solar wind, SW.
| Component M1 | Abundance s |
|---|---|
| H+ | 1/(αsw + 1) |
| He++ | αsw /(αsw + 1) |
Notes. The alpha to proton number density ratio, αsw, was obtained from the OMNI database (King & Papitashvili 2005). A histogram of values for this ratio is shown in Fig. 3. Heavier elements in the solar wind (von Steiger et al. 2000) do not significantly change the observed energy spectra of energetic neutral hydrogen and are thus omitted.
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