EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH
EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH
复制标题
使用 Themis 矢量磁力图证明喷发前扭曲磁力绳的证据
DOI:
10.1088/0004-637x/693/1/l27
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发表时间:
2009-03
影响因子:
7.9
通讯作者:
Bommier, V.
中科院分区:
文献类型:
--
作者:
Amari, T.;Aulanier, G.;Schmieder, B.;Canou, A.;Li, H.;Bommier, V.
Although there is evidence that twisted structures form during large-scale eruptive events, it is not yet clear whether these exist in the pre-eruptive phase as twisted flux ropes (TFRs) in equilibrium. This question has become a major issue since several theoretical mechanisms can lead to the formation of TFRs. These models consider either the evolution of a coronal configuration driven by photospheric changes or the emergence of TFR from the convection zone. We consider as a target for addressing this issue the active region NOAA AR 10808 known at the origin of several large-scale eruptive phenomena, and associated with the emergence of a δ-spot. Using the THEMIS vector magnetogram as photospheric boundary conditions for our nonlinear force-free reconstruction model of the low corona and without any other assumption, we show that the resulting pre-eruptive configuration exhibits a TFR above the neutral line of the emerging δ-spot. In addition, the free magnetic energy of this configuration could even be large enough to explain such resulting large-scale eruptive events.
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DOI:
10.1088/0004-637x/714/1/343
发表时间:
2010-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Yang Guo;Yang Guo;B. Schmieder;P. Démoulin;T. Wiegelmann;G. Aulanier;Tibor Török;V. Bommier
通讯作者:
Yang Guo;Yang Guo;B. Schmieder;P. Démoulin;T. Wiegelmann;G. Aulanier;Tibor Török;V. Bommier
DOI:
10.1051/aas:2000144
发表时间:
2000-02
期刊:
Astronomy & Astrophysics Supplement Series
影响因子:
--
作者:
A. Ariste;J. Rayrole;M. Semel
通讯作者:
A. Ariste;J. Rayrole;M. Semel
DOI:
10.1086/509062
发表时间:
2007
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Jing Li;T. Amari;Yuhong Fan
通讯作者:
Jing Li;T. Amari;Yuhong Fan
影响因子:
2.8
作者:
T. Amari;J. Aly;Jean-François Luciani;T. Boulmezaoud;Z. Mikić
通讯作者:
T. Amari;J. Aly;Jean-François Luciani;T. Boulmezaoud;Z. Mikić
影响因子:
6.5
作者:
A. Bleybel;T. Amari;L. Driel-Gesztelyi;K. Leka
通讯作者:
A. Bleybel;T. Amari;L. Driel-Gesztelyi;K. Leka