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Failed prominence eruptions near 24 cycle maximum View all abstracts by submitter

Boris Filippov   Submitted: 2020-03-31 02:28

We analyze 16 failed filament eruptions observed near 24 solar cycle maximum from May 2013 to July 2014. No significant rotation of filament spines is observed during the ascent in all studied failed eruptions, which does not support kink-instability mechanism of triggering the eruptions. We calculate potential magnetic field distributions in the corona above the initial locations of the filaments to study their height dependence. In seven events, the vertical profiles of the decay index n are monotonic. The other nine events occur in the regions with the switchback or saddle-like n-profiles. The direction of the horizontal field near the saddle bottom is turned through more than 100 deg. relative its direction at the initial filament position, which reveals the quadrupolar magnetic configuration with null points in these regions. The eruptive filaments stop above the null points where the total Lorenz force is directed upward. The most reasonable force that can terminate filament ascending and balance the Lorenz force seems the gravity.

Authors: B. Filippov
Projects: GOES X-rays,GONG,SDO-AIA,SDO-HMI,SoHO-LASCO,STEREO

Publication Status: Accepted for publication in MNRAS
Last Modified: 2020-03-31 10:45
Go to main E-Print page  HATS: A Ground-Based Telescope to Explore the THz Domain  Properties of Streamer Wave Events Observed During the STEREO Era  Edit Entry  Download Preprint  Delete Entry 

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