EGU25-4897, updated on 14 Mar 2025
https://doi.org/10.5194/egusphere-egu25-4897
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Poster | Wednesday, 30 Apr, 10:45–12:30 (CEST), Display time Wednesday, 30 Apr, 08:30–12:30
 
Hall X4, X4.142
Solar Orbiter/EUI observation of nanojets during a flare with unprecedented high speeds
Yuhang Gao1,2, Hui Tian1, Tom Van Doorsselaere2, and David Berghmans3
Yuhang Gao et al.
  • 1Peking University, School of Earth and Space Sciences, China (yh_gao@pku.edu.cn)
  • 2Centre for mathematical Plasma-Astrophysics, Department of Mathematics, KU Leuven, Belgium
  • 3Solar-Terrestrial Centre of Excellence − SIDC, Royal Observatory of Belgium, Ringlaan -3- Av. Circulaire, 1180 Brussels, Belgium

Nanojets are small-scale jets generated by component reconnection, characterized by their motion perpendicular to the reconnecting magnetic field lines. As an indicator of nanoflare events, they are believed to play a significant role in coronal heating. Using high-resolution EUV imaging observations from the Solar Orbiter/Extreme Ultraviolet Imager (EUI), we identified 27 nanojets during an M7.6 flare on September 30, 2024. Most nanojets exhibit velocities around 1000 km/s, comparable to the typical coronal Alfvén speed. To our knowledge, these speeds are the highest ever reported for small-scale jets. The average kinetic energy of the nanojets is estimated to be 2.3×1025 erg, with events of higher speeds typically displaying greater kinetic energy and longer durations.

How to cite: Gao, Y., Tian, H., Van Doorsselaere, T., and Berghmans, D.: Solar Orbiter/EUI observation of nanojets during a flare with unprecedented high speeds, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-4897, https://doi.org/10.5194/egusphere-egu25-4897, 2025.