SOLAR WIND-COMET EXOSPHERE INTERACTION. 2. COULD THE SINGLE-FLUID GAS-DYNAMIC MODEL BE APPLICABLE TO THE ROSETTA MISSION ∗

The capabilities of a single fluid gasdynamic model of so- lar wind-comet exosphere interaction, presented in the accompanying (Keremidarska et al.) (23), are discussed from the point of view of its potential implementation in interpreting data, expected to be obtained by ROSETTA mission instruments in plasma environments of the comet 67P/Churyumov-Gerasimenko. As an exapmle, some model's predic- tions of the structure and parameters' distribution in the inner coma of P/Halley are presented and compared with Giotto measurements. Spe- cial attention is paid to a possible non-traditional interpretation of the magnetic cavity boundasry, registered by Giotto magnetometer. Possible model's applications are discussed for each of the main expected stages in the evolution of the comet 76P/CG environments during ROSETTA