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SDO Observations of Magnetic Reconnection at Coronal Hole Boundaries View all abstracts by submitter

Shuhong Yang   Submitted: 2011-03-18 17:12

With the observations from the Atmospheric Imaging Assembly (AIA) andthe Helioseismic andMagnetic Imager (HMI) aboard the Solar Dynamics Observatory, weinvestigate the coronal holeboundaries (CHBs) of an equatorial extension of polar coronal hole. Atthe CHBs, lots of extreme-ultraviolet (EUV) jets, which appear to be the signatures of magneticreconnection, are observed in the193Å images, and some jets occur repetitively at the same sites. Theevolution of the jets is associatedwith the emergence and cancelation of magnetic fields. We notice thatboth the east and the westCHBs shift westward, and the shift velocities are close to thevelocities of rigid rotation compared withthose of the photospheric differential rotation. This indicates thatmagnetic reconnection at CHBsresults in the evolution of CHBs and maintains the rigid rotation ofcoronal holes.

Authors: Shuhong Yang, Jun Zhang, Ting Li, Yang Liu

Publication Status: accepted for publication in ApJL
Last Modified: 2011-03-18 18:20
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