Coronal Inflows and Giant Polar Plumes

Details Coronal Inflows and Giant Polar Plumes Coronal Inflows and Giant Polar Plumes

2009-12-16

arxiv.org/abs/0912.3226v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 5 figures, accepted for publication in the Solar Wind 12 conference proceedings (AIP Conference Proceedings)

Scientific paper

We present the first results of simulations of giant polar plumes and coronal flows. We use a 2.5D axisymmetric MHD numerical model of an isothermal corona and slow solar wind. A plume is generated just above asmall magnetic bipole embedded in an unipolar flux region which is perturbed by Alfv\'en waves injected from the coronal base. The boundary conditions are transparent. The results are compared to those obtained previously with a 1D wind model in which plumes are generated as a consequence of variations of the heating and flux-tube expansion parameters.

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