Correlation between Angular Widths of CMEs and Characteristics of Their Source Regions

Correlation between Angular Widths of CMEs and Characteristics of Their Source Regions
复制标题

日冕物质抛射角宽与其源区特征的相关性

DOI:
10.3847/1538-4357/aa8e49
复制
发表时间:
2017-11
影响因子:
4.9
通讯作者:
Li Z.
Li Z.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhao X. H.;Feng X. S.;Feng H. Q.;Li Z.

文献摘要

参考文献

被引文献

相似文献

日冕物质抛射(CME)的角宽度是决定相应的行星际物质抛射(ICME)及其之前的冲击是否会到达地球的重要因素。然而,对于日冕物质抛射角宽度的决定因素的研究却很少。在本研究中,我们利用基于日地关系天文台(STEREO)观测的分级圆柱壳模型获得的日冕物质抛射的三维(3D)角宽度来研究日冕物质抛射的3D宽度与日冕物质抛射源区特征之间的关系。我们发现,对于活动区(AR)产生的日冕物质抛射,日冕物质抛射宽度与活动区的面积和通量有一定的相关性,但这些相关性并不强。 CME 中包含的磁通量似乎仅来自 AR 总通量的一部分。对于耀斑区域产生的日冕物质抛射,日冕物质抛射角宽度与耀斑区域的面积和通量之间的相关性很强。这些日冕物质抛射内的磁通量似乎来自整个耀斑区域,甚至来自比耀斑更大的区域。我们的研究结果表明,如果日冕物质抛射的两个脚点保持在同一位置,并且日冕物质抛射在到达地球之前没有横向扩展,则一般可以根据太阳动力学观测站对日冕物质抛射源区的观测而不是太阳和日光层观测站和STEREO上的日冕仪的观测来估计日冕物质抛射的3D角宽度。
The angular width of a coronal mass ejection (CME) is an important factor in determining whether the corresponding interplanetary CME (ICME) and its preceding shock will reach Earth. However, there have been very few studies of the decisive factors of the CME’s angular width. In this study, we use the three-dimensional (3D) angular width of CMEs obtained from the Graduated Cylindrical Shell model based on observations of Solar Terrestrial Relations Observatory (STEREO) to study the relations between the CME’s 3D width and characteristics of the CME’s source region. We find that for the CMEs produced by active regions (ARs), the CME width has some correlations with the AR’s area and flux, but these correlations are not strong. The magnetic flux contained in the CME seems to come from only part of the AR’s total flux. For the CMEs produced by flare regions, the correlations between the CME angular width and the flare region’s area and flux are strong. The magnetic flux within those CMEs seems to come from the whole flare region or even from a larger region than the flare. Our findings show that the CME’s 3D angular width can be generally estimated based on observations of Solar Dynamics Observatory for the CME’s source region instead of the observations from coronagraphs on board the Solar and Heliospheric Observatory andSTEREO if the two foot points of the CME stay in the same places with no expansion of the CME in the transverse direction until reaching Earth.
DOI: 10.1007/s11207-011-9763-0
发表时间: 2011-05
期刊: Sol. Phys.
影响因子: --
作者:
Pan, Z. H., Wang, C. B., Wang, Yuming,;Xue, X. H
通讯作者: Xue, X. H
DOI: --
发表时间: 2012
期刊: --
影响因子: --
作者:
E. Bosman;V. Bothmer;G. Nistic
通讯作者: E. Bosman;V. Bothmer;G. Nistic
DOI: 10.1007/s11207-011-9857-8
发表时间: 2011-10
期刊: Solar Physics
影响因子: 2.8
作者:
Jie Chen;H. Lundstedt;Yuanyong Deng;P. Wintoft;Y. Zhang
通讯作者: Jie Chen;H. Lundstedt;Yuanyong Deng;P. Wintoft;Y. Zhang
DOI: 10.1086/167869
发表时间: 1989-09
期刊: The Astrophysical Journal
影响因子: --
作者:
S. Kahler;N. Sheeley;M. Liggett
通讯作者: S. Kahler;N. Sheeley;M. Liggett
DOI: 10.1002/wea.2437
发表时间: 2015-01
期刊: Weather
影响因子: 1.9
作者:
L. Green;D. Baker
通讯作者: L. Green;D. Baker