Development of the Physics-based Heating and Momentum Deposition Source Terms for Space Weather Modeling

Abstract:

Development of the physics-based heating and momentum source terms for Space Weather modeling is very important. The effects of the Alfvén waves have been considered for a long time in the solar wind models. In more sophisticated solar wind models, there is an additional equation that defines how the wave power evolves with time and heliocentric
distance. The acceleration is caused by the wave pressure gradient effecting particles propagating in the plasma. In this proposal, we would like to make one more step forward by modeling the compressional driven waves that are generated in the plasma when the propagating non-compressive transverse Alfvénic waves “sense” the inhomogeneous background plasma.