Patchy Reconnection in a Y-Type Current Sheet

Details Patchy Reconnection in a Y-Type Current Sheet Patchy Reconnection in a Y-Type Current Sheet

2007-12-07

arxiv.org/abs/0712.1235v2

Earth Planets, and Space (2009), 61 p573

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures

Scientific paper

We study the evolution of the magnetic field in a Y-type current sheet subject to a brief, localized magnetic reconnection event. The reconnection produces up- and down-flowing reconnected flux tubes which rapidly decelerate when they hit the Y-lines and underlying magnetic arcade loops at the ends of the current sheet. This localized reconnection outflow followed by a rapid deceleration reproduces the observed behavior of post-CME downflowing coronal voids. These simulations support the hypothesis that these observed coronal downflows are the retraction of magnetic fields reconnected in localized patches in the high corona.

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