Chromospheric Cannonballs on the Sun

@article{Yang2019ChromosphericCO,
  title={Chromospheric Cannonballs on the Sun},
  author={Shuhong Yang and Jun Zhang and Xiaohong Li and Zhongkan Liu and Yongyuan Xiang},
  journal={The Astrophysical Journal Letters},
  year={2019},
  volume={880}
}
In the highly dynamic chromosphere, there exist many kinds of small-scale activities, such as spicules, surges, and Ellerman bombs. Here, we report the discovery of a new phenomenon in the chromosphere observed with the New Vacuum Solar Telescope at the Fuxian Solar Observatory. In the high tempo-spatial-resolution Hα images, some dark or bright structures are found to fly along the curved trajectory, looking like cannonballs. Their average size, mass, and velocity are about 1.5 × 109 km3, 1.5… 

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