Solar jet-coronal hole collision and a related coronal mass ejection

TL;DR

This study presents detailed observations of a solar jet colliding with a coronal hole, which appears to be linked to the subsequent development of a coronal mass ejection, highlighting the role of magnetic topology in solar eruptions.

Contribution

It provides the first detailed observational evidence of a jet-CH collision influencing the direction and formation of a CME, emphasizing the importance of magnetic topology.

Findings

Jet-CH collision causes jet deflection and bounce-back.

A CME with a narrow, jet-like front follows the jet-CH interaction.

Dark material flows from the interaction region towards the CME.

Abstract

Jets are defined as impulsive, well-collimated upflows, occurring in different layers of the solar atmosphere with different scales. Their relationship with coronal mass ejections (CMEs), another type of solar impulsive events, remains elusive. Using the high-quality imaging data of AIA/SDO, here we show a well-observed coronal jet event, in which part of the jets, with the embedding coronal loops, runs into a nearby coronal hole (CH) and gets bounced towards the opposite direction. This is evidenced by the flat-shape of the jet front during its interaction with the CH and the V-shaped feature in the time-slice plot of the interaction region. About a half-hour later, a CME initially with a narrow and jet-like front is observed by the LASCO C2 coronagraph, propagating along the direction of the post-collision jet. We also observe some 304 A dark material flowing from the jet-CH interaction region towards the CME. We thus suggest that the jet and the CME are physically connected, with the jet-CH collision and the large- scale magnetic topology of the CH being important to define the eventual propagating direction of this particular jet-CME eruption.