Failed filament eruption inside a coronal mass ejection in active region 11121

D. Kuridze, M. Mathioudakis, A. F. Kowalski, P. H. Keys, D. B. Jess, K. S. Balasubramaniam, F. P. Keenan

Research output: Contribution to journalArticle

18 Citations (Scopus)
282 Downloads (Pure)

Abstract

Aims. We study the formation and evolution of a failed filament eruption observed in NOAA active region 11121 near the southeast
limb on November 6, 2010.
Methods. We used a time series of SDO/AIA 304, 171, 131, 193, 335, and 94 Å images, SDO/HMI magnetograms, as well as ROSA
and ISOON Hα images to study the erupting active region.
Results. We identify coronal loop arcades associated with a quadrupolar magnetic configuration, and show that the expansion and
cancellation of the central loop arcade system over the filament is followed by the eruption of the filament. The erupting filament
reveals a clear helical twist and develops the same sign of writhe in the form of inverse γ-shape.
Conclusions. The observations support the “magnetic breakout” process in which the eruption is triggered by quadrupolar reconnection
in the corona. We propose that the formation mechanism of the inverse γ-shape flux rope is the magnetohydrodynamic helical
kink instability. The eruption has failed because of the large-scale, closed, overlying magnetic loop arcade that encloses the active
region
Original languageEnglish
Article numberA55
Pages (from-to)1-7
JournalAstronomy and Astrophysics
Volume552
DOIs
Publication statusPublished - 01 Apr 2013

Keywords

  • Sun: corona
  • Sun: flares
  • Sun: magnetic topology
  • Sun: chromosphere
  • Sun: filaments
  • prominences
  • Sun: coronal mass ejections (CMEs)

Fingerprint Dive into the research topics of 'Failed filament eruption inside a coronal mass ejection in active region 11121'. Together they form a unique fingerprint.

Cite this