Dependence of the Occurrence of Coronal Mass Ejections on the Initial Length of the Eruptive Prominence

• Published in: Geomagnetism and Aeronomy Vol. 62; no. 3; pp. 151 - 158
• Main Author: Filippov, B. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-06-2022; Springer Nature B.V
• Subjects: Altitude; Coronal mass ejection; Earth and Environmental Science; Earth Sciences; Fluctuations; Geophysics/Geodesy; Low altitude; Magnetic flux; Photosphere
• ISSN: 0016-7932; 1555-645X; 0016-7940
• DOI: 10.1134/S0016793222030082

A model of the eruption of a magnetic flux rope with ends rigidly fixed in the photosphere is analyzed. Long and short flux ropes exhibit different scenarios of eruption, other conditions being equal. Short flux ropes accelerate quickly but for a short time, and they can be quite easily stopped at a relatively low altitude, leading to so-called failed eruptions. The eruption of a long flux rope is more likely to result in its rise to a greater altitude and the formation of a coronal mass ejection. This trend is traced in real observations of eruptive phenomena on the Sun.