1. FIP effect (just class note) It is well known for the Sun, elements with low FIP (<10eV) are overabundant in the corona relative to the photosphere whereas higher FIP elements (>10 eV) have photospheric-type abundances. Several research indicate FIP effect is different for different region and different stars. A little bit information can be found in Grevesse et al. (2009) Space Science Review. For different materials, for example, slow solar wind, fast SW (Bochsler 2006), energetic particle (Reames 1999), quiet corona(Young 2005), quiet sun. The effect can be different too.

郭帆 Posted at 2009-01-18 13:43 CST Last modified at 2009-01-18 13:43 CST Link to this poster Friendly Version Top