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题名: New upper limits on the power of general relativity from solar system dynamics
作者: Deng XueMei(邓雪梅) ; Xie, Y
刊名: NEW ASTRONOMY
出版日期: 2015
卷号: 35, 页码:36-39
学科分类: 天文和天体物理
文章类型: 期刊论文
英文摘要: It is well known that solar flares and shocks driven by coronal mass ejections (CMEs) are high-energy particle acceleration processes that might cause a high-energy particle event known as a ground-level enhancement (GLE). In this context, we have attempted to understand the processes responsible for the first GLE event (GLE71 17 May 2012 01:50 UT) of Solar Cycle 24. We studied the spatial and spectral data from the Solar Dynamics Observatory (SDO) the Culgoora radio-heliograph, and Wind/WAVES instrument, and analyzed the temporal data of the solar-flare components, the solar radio-flux density, and the electron fluxes from the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), the Geostationary Operational Environmental Satellite (GOES), the Radio Solar Telescope Network (RSTN), and Wind spacecraft. The flare had two ribbons separated by the neutral line between negative and positive magnetic polarity. Their structure was also almost consistent with the contours of some flare components, which were almost saturated during the flare-peak time. As indicated by the metric-kilometric Type-II burst, and because it extended over a wide heliolongitude (> a parts per thousand aEuro parts per thousand 41(a similar to)) range, the CME-driven shock was fast enough to cause high-energy particle acceleration at a high altitude in the solar corona. Moreover, the CME and flare-flash phases were aligned along the same direction, which implies that if the CME-driven shock played the leading role in causing the GLE, preceding flare components may have contributed to the shock.
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000344427700006
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14872
Appears in Collections:历算和天文参考系研究团组_期刊论文

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