Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars.

Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars.
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强烈的日冕通道和太阳风暴的行星际演化直至地球和火星

DOI:
10.1038/ncomms8135
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发表时间:
2015-05-26
影响因子:
16.6
通讯作者:
Vrsnak, Bojan
Vrsnak, Bojan
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Mostl, Christian;Rollett, Tanja;Frahm, Rudy A.;Liu, Ying D.;Long, David M.;Colaninno, Robin C.;Reiss, Martin A.;Temmer, Manuela;Farrugia, Charles J.;Posner, Arik;Dumbovic, Mateja;Janvier, Miho;Demoulin, Pascal;Boakes, Peter;Devos, Andy;Kraaikamp, Emil;Mays, Mona L.;Vrsnak, Bojan

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太阳风暴或日冕物质抛射(CME)的严重地磁效应在很大程度上取决于它们相对于地球的传播方向。对决定其非径向传播的过程缺乏了解。在这里,我们提出了一个合成的数据从七个不同的空间任务的快速日冕物质抛射,起源于一个活跃的区域附近的磁盘中心,因此,一个显着的地磁影响进行了预测。然而,CME被证明在喷发期间被引导到远离其源区的+37 10 °(经度)的方向,仅导致最小的地磁效应。在地球和火星附近的原位观测证实了CME的运动,并且与新的椭圆演化模型提供的CME驱动的冲击的椭圆形状一致。结果增强了我们对CME传播和形状的理解,这有助于改善空间天气预报。
The severe geomagnetic effects of solar storms or coronal mass ejections (CMEs) are to a large degree determined by their propagation direction with respect to Earth. There is a lack of understanding of the processes that determine their non-radial propagation. Here we present a synthesis of data from seven different space missions of a fast CME, which originated in an active region near the disk centre and, hence, a significant geomagnetic impact was forecasted. However, the CME is demonstrated to be channelled during eruption into a direction +37±10° (longitude) away from its source region, leading only to minimal geomagnetic effects.In situobservations near Earth and Mars confirm the channelled CME motion, and are consistent with an ellipse shape of the CME-driven shock provided by the new Ellipse Evolution model, presented here. The results enhance our understanding of CME propagation and shape, which can help to improve space weather forecasts.
DOI: 10.1002/2013ja019205
发表时间: 2013-11-01
影响因子: 2.8
作者:
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