publication . Preprint . 2011

Solar winds along curved magnetic field lines

Li, Bo; Xia, Li-Dong; Chen, Yao;
Open Access English
  • Published: 27 Mar 2011
Abstract
Both remote-sensing measurements using the interplanetary scintillation (IPS) technique and in situ measurements by the Ulysses spacecraft show a bimodal structure for the solar wind at solar minimum conditions. At present what makes the fast wind fast and the slow wind slow still remains to be answered. While a robust empirical correlation exists between the coronal expansion rate $f_c$ of the flow tubes and the speeds $v$ measured in situ, further data analysis suggests that $v$ depends on more than just $f_c$. We examine whether the non-radial shape of field lines, which naturally accompanies any non-radial expansion, could be an additional geometrical factor...
Subjects
arxiv: Physics::Space PhysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: Astrophysics - Solar and Stellar Astrophysics
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