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Title: MULTIWAVELENGTH OBSERVATIONS OF A PARTIALLY ERUPTIVE FILAMENT ON 2011 SEPTEMBER 8

Abstract

In this paper, we report our multiwavelength observations of a partial filament eruption event in NOAA active region (AR) 11283 on 8 September 2011. A magnetic null point and the corresponding spine and separatrix surface are found in the AR. Beneath the null point, a sheared arcade supports the filament along the highly complex and fragmented polarity inversion line. After being activated, the sigmoidal filament erupted and split into two parts. The major part rose at speeds of 90–150 km s{sup −1} before reaching the maximum apparent height of ∼115 Mm. Afterward, it returned to the solar surface in a bumpy way at speeds of 20–80 km s{sup −1}. The rising and falling motions were clearly observed in the extreme-ultraviolet, UV, and Hα wavelengths. The failed eruption of the main part was associated with an M6.7 flare with a single hard X-ray source. The runaway part of the filament, however, separated from and rotated around the major part for ∼1 turn at the eastern leg before escaping from the corona, probably along large-scale open magnetic field lines. The ejection of the runaway part resulted in a very faint coronal mass ejection that propagated at an apparent speed of 214 kmmore » s{sup −1} in the outer corona. The filament eruption also triggered a transverse kink-mode oscillation of the adjacent coronal loops in the same AR. The amplitude and period of the oscillation were 1.6 Mm and 225 s. Our results are important for understanding the mechanisms of partial filament eruptions, and provide new constraints to theoretical models. The multiwavelength observations also shed light on space weather prediction.« less

Authors:
; ; ; ;  [1]; ;  [2];  [3]
  1. Key Laboratory for Dark Matter and Space Science, Purple Mountain Observatory, CAS, Nanjing 210008 (China)
  2. School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)
  3. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg-3, D-37077 Göttingen (Germany)
Publication Date:
OSTI Identifier:
22522420
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 805; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ERUPTION; EXTREME ULTRAVIOLET RADIATION; FILAMENTS; HARD X RADIATION; LIMITING VALUES; MAGNETIC FIELDS; MASS; OSCILLATION MODES; OSCILLATIONS; SHEAR; SPACE; STELLAR CORONAE; SUN; SURFACES; VELOCITY; VISIBLE RADIATION

Citation Formats

Zhang, Q. M., Ning, Z. J., Zhou, T. H., Ji, H. S., Feng, L., Guo, Y., Cheng, X., and Wiegelmann, T., E-mail: zhangqm@pmo.ac.cn. MULTIWAVELENGTH OBSERVATIONS OF A PARTIALLY ERUPTIVE FILAMENT ON 2011 SEPTEMBER 8. United States: N. p., 2015. Web. doi:10.1088/0004-637X/805/1/4.
Zhang, Q. M., Ning, Z. J., Zhou, T. H., Ji, H. S., Feng, L., Guo, Y., Cheng, X., & Wiegelmann, T., E-mail: zhangqm@pmo.ac.cn. MULTIWAVELENGTH OBSERVATIONS OF A PARTIALLY ERUPTIVE FILAMENT ON 2011 SEPTEMBER 8. United States. doi:10.1088/0004-637X/805/1/4.
Zhang, Q. M., Ning, Z. J., Zhou, T. H., Ji, H. S., Feng, L., Guo, Y., Cheng, X., and Wiegelmann, T., E-mail: zhangqm@pmo.ac.cn. Wed . "MULTIWAVELENGTH OBSERVATIONS OF A PARTIALLY ERUPTIVE FILAMENT ON 2011 SEPTEMBER 8". United States. doi:10.1088/0004-637X/805/1/4.
@article{osti_22522420,
title = {MULTIWAVELENGTH OBSERVATIONS OF A PARTIALLY ERUPTIVE FILAMENT ON 2011 SEPTEMBER 8},
author = {Zhang, Q. M. and Ning, Z. J. and Zhou, T. H. and Ji, H. S. and Feng, L. and Guo, Y. and Cheng, X. and Wiegelmann, T., E-mail: zhangqm@pmo.ac.cn},
abstractNote = {In this paper, we report our multiwavelength observations of a partial filament eruption event in NOAA active region (AR) 11283 on 8 September 2011. A magnetic null point and the corresponding spine and separatrix surface are found in the AR. Beneath the null point, a sheared arcade supports the filament along the highly complex and fragmented polarity inversion line. After being activated, the sigmoidal filament erupted and split into two parts. The major part rose at speeds of 90–150 km s{sup −1} before reaching the maximum apparent height of ∼115 Mm. Afterward, it returned to the solar surface in a bumpy way at speeds of 20–80 km s{sup −1}. The rising and falling motions were clearly observed in the extreme-ultraviolet, UV, and Hα wavelengths. The failed eruption of the main part was associated with an M6.7 flare with a single hard X-ray source. The runaway part of the filament, however, separated from and rotated around the major part for ∼1 turn at the eastern leg before escaping from the corona, probably along large-scale open magnetic field lines. The ejection of the runaway part resulted in a very faint coronal mass ejection that propagated at an apparent speed of 214 km s{sup −1} in the outer corona. The filament eruption also triggered a transverse kink-mode oscillation of the adjacent coronal loops in the same AR. The amplitude and period of the oscillation were 1.6 Mm and 225 s. Our results are important for understanding the mechanisms of partial filament eruptions, and provide new constraints to theoretical models. The multiwavelength observations also shed light on space weather prediction.},
doi = {10.1088/0004-637X/805/1/4},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 805,
place = {United States},
year = {2015},
month = {5}
}