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With the data from the Atmospheric Imaging Assembly (AIA) and theHelioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory(SDO), we present a magnetic interaction between an isolated coronal hole (CH)and an emerging active region (AR). The AR emerged nearby the CH and interactedwith it. Bright loops constantly formed between them, which led to a continuousretreat of the CH boundaries (CHBs). Meanwhile, two coronal dimmingsrespectively appeared at the negative polarity of the AR and the east boundaryof the bright loops, and the AR was partly disturbed. Loop eruptions followedby a flare occurred in the AR. The interaction was also accompanied by manyjets and an arc-shaped brightening that appeared to be observational signaturesof magnetic reconnection at the CHBs. By comparing the observations with thederived coronal magnetic configuration, it is suggested that the interactionbetween the CH and the AR excellently fitted in with the model of interchangereconnection. It appears that our observations provide obvious evidences forinterchange reconnection.

Interchange reconnection between an active region and a corona hole