LABORATORI NAZIONALI DEL SUD
The solar wind plays a fundamental role in shaping the heliosphere, it governs the
interactions in the near Earth space environment, and helps determining the severity
of Space Weather events, and the hazard they pose to human technological assets.
Despite its importance and all the efforts aimed at studying it, we are still unable to
answer two fundamental questions regarding the solar wind: 1) from what regions
in the solar atmosphere are wind plasmas accelerated from, and 2) how is the solar
wind heated and accelerated?
In this talk I will describe the results of a combined approach that includes 1) in-situ
measurements of wind properties from Ulysses and ACE, 2) remote sensing observations
from SoHO and Hinode, and 3) the Michigan 3D MHD global model, aimed at answering
these questions, and illustrate a new, unified scenario for the solar wind phenomenon.