Prominence eruption observed in He II 304 angstrom up to > 6 R-circle dot by EUI/FSI aboard Solar Orbiter

0558623 - ASÚ 2023 RIV FR eng J - Journal Article
Mierla, M. - Zhukov, A. - Berghmans, D. - Heinzel, Petr … Total 27 authors
Prominence eruption observed in He II 304 angstrom up to > 6 R-circle dot by EUI/FSI aboard Solar Orbiter.
Astronomy & Astrophysics. Roč. 662, June (2022), č. článku L5. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GA22-34841S; GA ČR GA19-16890S
Institutional support: RVO:67985815
Keywords : coronal mass ejections * imaging telescope * flux cancellation
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.5, year: 2022
Method of publishing: Open access

We report observations of a unique, large prominence eruption that was observed in the He II 304 angstrom passband of the Extreme Ultraviolet Imager/Full Sun Imager telescope aboard Solar Orbiter on 15-16 February 2022. Observations from several vantage points - Solar Orbiter, the Solar-Terrestrial Relations Observatory, the Solar and Helio-spheric Observatory, and Earth-orbiting satellites - were used to measure the kinematics of the erupting prominence and the associated coronal mass ejection. Three-dimensional reconstruction was used to calculate the deprojected positions and speeds of different parts of the prominence. Observations in several passbands allowed us to analyse the radiative properties of the erupting prominence. The leading parts of the erupting prominence and the leading edge of the corresponding coronal mass ejection propagate at speeds of around 1700 km s(-1) and 2200 km s(-1), respectively, while the trailing parts of the prominence are significantly slower (around 500 km s(-1)). Parts of the prominence are tracked up to heights of over 6 R-circle dot. The He II emission is probably produced via collisional excitation rather than scattering. Surprisingly, the brightness of a trailing feature increases with height.
Permanent Link: https://hdl.handle.net/11104/0332729