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Solar source regions for He-3-rich solar energetic particle events identified using imaging radio, optical, and energetic particle observations
Pick, M.; Mason, G. M.; Wang, Y. -M.; Tan, C.; Wang, L.
2006-09-10
Source PublicationASTROPHYSICAL JOURNAL
Volume648Issue:2Pages:1247-1255
AbstractWe have identified the sources of six impulsive 3He-rich solar energetic particle events using imaging radio, optical, and energetic ion and electron data, together with calculated coronal fields obtained from extrapolating photospheric magnetograms using a potential field source surface (PFSS) model. These events were all studied in 2006 by Wang et al., who identified the particle sources as typically small, flaring active regions lying next to a coronal hole containing Earth-directed open field lines, located between W33 degrees and W65 degrees. By introducing radio imaging data we were able in one case to conclusively identify which of two simultaneous EUV jets was associated with the particle source. In addition, type III radio burst and energetic electron data introduced in this study constrain the injection times much more accurately than possible with low-energy ion data used inWang et al. These new observations confirm the source identifications of Wang et al. and remove many of the remaining uncertainties. All of these events were associated with narrow, fast coronal mass ejections (CMEs), which are unusual for He-3- rich solar energetic particle (SEP) events. Although the CMEs generally were ejected in directions well off the ecliptic plane, the PFSS calculations show the presence of magnetic field lines that made it possible for the energetic particle to quickly reach Earth. Some of these impulsive events were observed during periods in which He-3 was observed continuously over several days.
KeywordSun : Coronal Mass Ejections (Cmes) Sun : Radio Radiation Sun : X-rays Gamma Rays
Indexed BySCI
Language英语
WOS IDWOS:000240403600045
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8948
Collection太阳物理研究部
Affiliation1.Observ Paris, CNRS, LESIA, UMR 8109, F-92195 Meudon, France
2.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA
3.USN, Res Lab, Ctr Space Res, Washington, DC 20375 USA
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
5.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Pick, M.,Mason, G. M.,Wang, Y. -M.,et al. Solar source regions for He-3-rich solar energetic particle events identified using imaging radio, optical, and energetic particle observations[J]. ASTROPHYSICAL JOURNAL,2006,648(2):1247-1255.
APA Pick, M.,Mason, G. M.,Wang, Y. -M.,Tan, C.,&Wang, L..(2006).Solar source regions for He-3-rich solar energetic particle events identified using imaging radio, optical, and energetic particle observations.ASTROPHYSICAL JOURNAL,648(2),1247-1255.
MLA Pick, M.,et al."Solar source regions for He-3-rich solar energetic particle events identified using imaging radio, optical, and energetic particle observations".ASTROPHYSICAL JOURNAL 648.2(2006):1247-1255.
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