PPT Slide
- Comet was often in the fast solar wind at high magnetic latitude Normal solar wind: 350-400 km s-1 in the ecliptic Fast solar wind: 700-800 km s -1
- Large Gas/Ion Production Rates (Gombosi et al. 1998) Scale-up of plasma interaction surfaces (r ~ 0.9 AU) Hale-Bopp Halley Bow Shock 1.6 x 106 km 2 x 105 km Contact Surface 30000 km 2200 km
- HCO+ identified and imaged (Veal et al. 1997; Lovell et al. 1998) Production Loss CO+ +H2O -> HCO + +OH HCO + + H2O -> H3O + +CO H2CO + hn -> HCO + + H + e HCO + + NH3 -> NH4 + + CO HCO2 + + CO -> HCO + + CO2 HCO + + OH -> HCO2 + + H HCO + + OH -> H2O + + CO from Rauer (1998) HCO + + e -> CO + H