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Observations of the failed eruption of a filament
Ji, HS; Wang, HM; Schmahl, EJ; Moon, YJ; Jiang, YC
AbstractWe have observed the fine temporal and spatial structure of a filament eruption on 2002 May 27 following an M2-class flare. Our observations at Big Bear Solar Observatory were made at the wavelength of Halpha 1.3 Angstrom, with a cadence of 40 ms. The event was also observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) at X-ray energies from 3 to 50 keV and by the Transition Region and Coronal Explorer (TRACE) in poFe XII 195 Angstrom. The event appears to be a "failed eruption," as the filament material, seen in absorption by TRACE, first accelerated then decelerated as it approached its peak height of similar to8 x 10(4) km while the filament threads drained back to the Sun. The fact that the eruption did not lead to a coronal mass ejection indicates that the coronal magnetic field near similar to8 x 10(4) km did not open during the flare. The height-time curve obtained from the TRACE 195 Angstrom images during the deceleration phase shows that the deceleration of the filament exceeded the gravitational deceleration by more than a factor of 10, which suggests that the filament material was pulled back by magnetic tension. Also of importance are three sequential but cospatial features-brightenings in EUV, a loop-top hard X-ray emission, and "rupturing" of the Halpha filament-that point to a release of energy (and probably magnetic reconnection) above the initial filament's location but well below its terminal height. Reconnection above a filament does not appear in most models, with the notable exception of quadrupolar and "breakout" models. These observations provide evidence that at least two conditions are required for a successful eruption: a reconnection very low in the corona (possibly above the filament) and open or opening fields above that point.
KeywordMagnetic-field Evolution Coronal Mass Ejections Solar-flares Transition Region 2-ribbon Flares Model Reconnection Explorer Rhessi
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000185676000016
Citation statistics
Cited Times:150[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.New Jersey Inst Technol, Big Bear Solar Observ, Big Bear City, CA 92314 USA
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Maryland, Dept Astron, College Pk, MD 20742 USA
4.Korean Astron Observ, Taejon 305348, South Korea
Recommended Citation
GB/T 7714
Ji, HS,Wang, HM,Schmahl, EJ,et al. Observations of the failed eruption of a filament[J]. ASTROPHYSICAL JOURNAL,2003,595(2):L135-L138.
APA Ji, HS,Wang, HM,Schmahl, EJ,Moon, YJ,&Jiang, YC.(2003).Observations of the failed eruption of a filament.ASTROPHYSICAL JOURNAL,595(2),L135-L138.
MLA Ji, HS,et al."Observations of the failed eruption of a filament".ASTROPHYSICAL JOURNAL 595.2(2003):L135-L138.
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