skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Interaction and merging of two sinistral filaments

Abstract

In this paper, we report the interaction and subsequent merging of two sinistral filaments (F1 and F2) occurring at the boundary of AR 9720 on 2001 December 6. The two filaments were close and nearly perpendicular to each other. The interaction occurred after F1 was erupted and the eruption was impeded by a more extended filament channel (FC) standing in the way, in which F2 was embedded. The erupted material ran into FC along its axis, causing F1 and F2 to merge into a single structure that subsequently underwent a large-amplitude to-and-fro motion. A significant plasma heating process was observed in the merging process, making the mixed material largely disappear from the Hα passband, but appear in Extreme Ultraviolet Telescope 195 Å images for a while. These observations can serve as strong evidence of merging reconnection between the two colliding magnetic structures. A new sinistral filament was formed along FC after the cooling of the merged and heated material. No coronal mass ejection was observed to be associated with the event; though, the eruption was accompanied by a two-ribbon flare with a separation motion, indicating that the eruption had failed. This event shows that, in addition to overlying magnetic fields,more » such an interaction is an effective restraint to make a filament eruption fail in this way.« less

Authors:
; ; ;  [1];  [2]; ;  [3]
  1. Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011 (China)
  2. Space Weather Research Laboratory, Center for Solar-Terrestrial Research, NJIT, Newark, NJ 07102 (United States)
  3. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)
Publication Date:
OSTI Identifier:
22365038
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 793; 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; AMPLITUDES; COOLING; ERUPTION; EXTREME ULTRAVIOLET RADIATION; FILAMENTS; GALAXIES; IMAGES; INTERACTIONS; MAGNETIC FIELDS; MASS; PLASMA HEATING; RESTRAINTS; SUN; TELESCOPES

Citation Formats

Jiang, Yunchun, Yang, Jiayan, Liu, Yu, Li, Haidong, Wang, Haimin, Ji, Haisheng, and Li, Jianping, E-mail: jyc@ynao.ac.cn. Interaction and merging of two sinistral filaments. United States: N. p., 2014. Web. doi:10.1088/0004-637X/793/1/14.
Jiang, Yunchun, Yang, Jiayan, Liu, Yu, Li, Haidong, Wang, Haimin, Ji, Haisheng, & Li, Jianping, E-mail: jyc@ynao.ac.cn. Interaction and merging of two sinistral filaments. United States. doi:10.1088/0004-637X/793/1/14.
Jiang, Yunchun, Yang, Jiayan, Liu, Yu, Li, Haidong, Wang, Haimin, Ji, Haisheng, and Li, Jianping, E-mail: jyc@ynao.ac.cn. Sat . "Interaction and merging of two sinistral filaments". United States. doi:10.1088/0004-637X/793/1/14.
@article{osti_22365038,
title = {Interaction and merging of two sinistral filaments},
author = {Jiang, Yunchun and Yang, Jiayan and Liu, Yu and Li, Haidong and Wang, Haimin and Ji, Haisheng and Li, Jianping, E-mail: jyc@ynao.ac.cn},
abstractNote = {In this paper, we report the interaction and subsequent merging of two sinistral filaments (F1 and F2) occurring at the boundary of AR 9720 on 2001 December 6. The two filaments were close and nearly perpendicular to each other. The interaction occurred after F1 was erupted and the eruption was impeded by a more extended filament channel (FC) standing in the way, in which F2 was embedded. The erupted material ran into FC along its axis, causing F1 and F2 to merge into a single structure that subsequently underwent a large-amplitude to-and-fro motion. A significant plasma heating process was observed in the merging process, making the mixed material largely disappear from the Hα passband, but appear in Extreme Ultraviolet Telescope 195 Å images for a while. These observations can serve as strong evidence of merging reconnection between the two colliding magnetic structures. A new sinistral filament was formed along FC after the cooling of the merged and heated material. No coronal mass ejection was observed to be associated with the event; though, the eruption was accompanied by a two-ribbon flare with a separation motion, indicating that the eruption had failed. This event shows that, in addition to overlying magnetic fields, such an interaction is an effective restraint to make a filament eruption fail in this way.},
doi = {10.1088/0004-637X/793/1/14},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 793,
place = {United States},
year = {2014},
month = {9}
}