Pre-Flare Flows in the Corona
Pre-Flare Flows in the Corona
复制标题
日冕中的前耀斑流
DOI:
10.1007/s11207-010-9661-x
复制
发表时间:
2010
期刊:
影响因子:
2.8
通讯作者:
S. Matthews
中科院分区:
文献类型:
--
作者:
A. Wallace;L. Harra;L. Driel;L. Green;S. Matthews
Solar flares take place in regions of strong magnetic fields and are generally accepted to be the result of a resistive instability leading to magnetic reconnection. When new flux emerges into a pre-existing active region it can act as a flare and coronal mass ejection trigger. In this study we observed active region 10955 after the emergence of small-scale additional flux at the magnetic inversion line. We found that flaring began when additional positive flux levels exceeded 1.38×1020 Mx (maxwell), approximately 7 h after the initial flux emergence. We focussed on the pre-flare activity of one B-class flare that occurred on the following day. The earliest indication of activity was a rise in the non-thermal velocity one hour before the flare. 40 min before flaring began, brightenings and pre-flare flows were observed along two loop systems in the corona, involving the new flux and the pre-existing active region loops. We discuss the possibility that reconnection between the new flux and pre-existing loops before the flare drives the flows by either generating slow mode magnetoacoustic waves or a pressure gradient between the newly reconnected loops. The subsequent B-class flare originated from fast reconnection of the same loop systems as the pre-flare flows.
登录
查看更多内容
影响因子:
2.3
作者:
M. Kubo;T. Yokoyama;Y. Katsukawa;B. Lites;S. Tsuneta;Y. Suematsu;K. Ichimoto;T. Shimizu;S. Nagata;T. Tarbell;R. Shine;A. Title;D. Elmore
通讯作者:
M. Kubo;T. Yokoyama;Y. Katsukawa;B. Lites;S. Tsuneta;Y. Suematsu;K. Ichimoto;T. Shimizu;S. Nagata;T. Tarbell;R. Shine;A. Title;D. Elmore
DOI:
10.1086/424823
发表时间:
2004-11
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Takuma Sakajiri;D. Brooks;Tetsuya T. Yamamoto;D. Shiota;H. Isobe;S. Akiyama;S. Ueno;R. Kitai;K. Shibata
通讯作者:
Takuma Sakajiri;D. Brooks;Tetsuya T. Yamamoto;D. Shiota;H. Isobe;S. Akiyama;S. Ueno;R. Kitai;K. Shibata
影响因子:
2.3
作者:
A. Sterling;R. Moore;T. Berger;M. Bobra;John Davis;P. Jibben;R. Kano;L. Lundquist;D. Myers;N. Narukage;T. Sakao;K. Shibasaki;R. Shine;T. Tarbell;M. Weber
通讯作者:
A. Sterling;R. Moore;T. Berger;M. Bobra;John Davis;P. Jibben;R. Kano;L. Lundquist;D. Myers;N. Narukage;T. Sakao;K. Shibasaki;R. Shine;T. Tarbell;M. Weber
DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
中沢敦夫;宮野裕;今村栄一;広島市立大学国際学部多文化共生プログラム(編)
通讯作者:
広島市立大学国際学部多文化共生プログラム(編)