Twist in a polar blowout jet  

作　　者：Jun-Chao Hong Yun-Chun Jiang Jia-Yan Yang Rui-Sheng Zheng Yi Bi Hai-Dong Li Bo Yang Dan Yang 

机构地区：[1]National Astronomical Observatories/Yunnan Astronomical Observatory,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Research in Astronomy and Astrophysics》2013年第3期253-258,共6页天文和天体物理学研究（英文版）

基　　金：supported by the National Basic Research Program of China (973 Program,2011CB811403);by the National Natural Science Foundation of China (Grant Nos. 10973038 and 11173038)

摘　　要：It is well known that some coronal jets exhibit helical structures and un- twisting. We attempt to inspect the origin of twist in a blowout jet. By means of multiwavelength and multi-angle observations from Solar Dynamics Observatory （SDO） and Solar Terrestrial Relations Observatory-Ahead （STEREO-A）, we firstly report a polar untwisting jet that is a blowout jet which leads to a jet-like coronal mass ejection. From the viewpoint of SDO, the jet shows clear untwisting behavior and two jet-spires. However, from the viewpoint of STEREO-A the jet actually comes from the whiplike prominence eruption and is followed by a white-light jet. Our observations indicate that twist in blowout jets may result from the erupting mini-prominences/mini- filaments in the jet base.It is well known that some coronal jets exhibit helical structures and un- twisting. We attempt to inspect the origin of twist in a blowout jet. By means of multiwavelength and multi-angle observations from Solar Dynamics Observatory （SDO） and Solar Terrestrial Relations Observatory-Ahead （STEREO-A）, we firstly report a polar untwisting jet that is a blowout jet which leads to a jet-like coronal mass ejection. From the viewpoint of SDO, the jet shows clear untwisting behavior and two jet-spires. However, from the viewpoint of STEREO-A the jet actually comes from the whiplike prominence eruption and is followed by a white-light jet. Our observations indicate that twist in blowout jets may result from the erupting mini-prominences/mini- filaments in the jet base.

关 键 词：Sun： corona -- Sun： coronal mass ejections -- Sun： prominences 

分 类 号：P12[天文地球—天体测量]