Coronal Pseudostreamers: Source of Fast or Slow Solar Wind?

Дата и время публикации : 2012-11-27T00:49:54Z

Авторы публикации и институты :
Olga Panasenco
Marco Velli

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Solar Wind 13: Proceedings of the Thirteenth International Solar Wind Conference
Первичная категория: astro-ph.SR

Все категории : astro-ph.SR

Краткий обзор статьи: We discuss observations of pseudostreamers and their 3D magnetic configuration as reconstructed with potential field source surface (PFSS) models to study their contribution to the solar wind. To understand the outflow from pseudostreamers the 3D expansion factor must be correctly estimated. Pseudostreamers may contain filament channels at their base in which case the open field lines diverge more strongly and the corresponding greater expansion factors lead to slower wind outflow, compared with pseudostreamers in which filament channels are absent. In the neighborhood of pseudostreamers the expansion factor does not increase monotonically with distance from the sun, and doesn’t simply depend on the height of the pseudostreamer null point but on the entire magnetic field configuration.

Category: Physics