Sunspot rotation, filament, and flare: The event on 2000 February 10

Abstract

We find that a sunspot with positive polarity had an obvious counter-clockwise rotation and resulted in the formation and eruption of an inverse S-shaped filament in NOAA active region (AR) 08858 from 2000 February 9 to 10. The sunspot had two umbrae which rotated around each other by 195 degrees within about twenty-four hours. The average rotation rate was nearly 8 degrees per hour. The fastest rotation in the photosphere took place during 14:00UT to 22:01UT on February 9, with the rotation rate of nearly 16 degrees per hour. The fastest rotation in the chromosphere and the corona took place during 15:28UT to 19:00UT on February 9, with the rotation rate of nearly 20 degrees per hour. Interestingly, the rapid increase of the positive magnetic flux just occurred during the fastest rotation of the rotating sunspot, the bright loop-shaped structure and the filament. During the sunspot rotation, the inverse S-shaped filament gradually formed in the EUV filament channel. The filament experienced two eruptions. In the first eruption, the filament rose quickly and then the filament loops carrying the cool and the hot material were seen to spiral into the sunspot counterclockwise. About ten minutes later, the filament became active and finally erupted. The filament eruption was accompanied with a C-class flare and a halo coronal mass ejection (CME). These results provide evidence that sunspot rotation plays an important role in the formation and eruption of the sigmoidal active-region filament.

arXiv comment20 pages, 9 figures, Accepted for publication in ApJ

References in corpus (14)

• Photospheric flux cancellation and associated flux rope formation and eruption
• Formation of current sheets and sigmoidal structure by the kink instability of a magnetic loop
• The Emergence of a Twisted Flux Tube into the Solar Atmosphere: Sunspot Rotations and the Formation of a Coronal Flux Rope
• Observations and modeling of the early acceleration phase of erupting filaments involved in coronal mass ejections
• Interaction between a fast rotating sunspot and ephemeral regions as the origin of the major solar event on 2006 December 13
• Magnetic Field Confinement in the Corona: The Role of Magnetic Helicity Accumulation
• Flux Rope Formation Preceding Coronal Mass Ejection Onset
• The Eruption from a Sigmoidal Solar Active Region on 2005 May 13
• Evolution of Solar Magnetic Field and Associated Multi-wavelength Phenomena: Flare events on 20 November 2003
• Temperature Tomography of a Coronal Sigmoid Supporting the Gradual Formation of a Flux Rope
• Relationship between eruptions of active-region filaments and associated flares and CMEs
• The causality between the rapid rotation of a sunspot and an X3.4 flare
• Time Evolution of Coronal Magnetic Helicity in the Flaring Active Region NOAA 10930
• Statistics of Flares Sweeping across Sunspots

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