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Solar Fast Wind Regions as Sources of Gradual 20 MeV Solar Energetic Particle Events

机译:太阳能快速风区域作为渐进式20 MeV太阳能粒子事件的来源

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If production of solar energetic particles (SEPs) near the Sun is due to shocks driven by coronal mass ejections (CMEs),then SEP acceleration in slow rather than fast solar wind streams should be favored because both the Alfven and solar wind flow speeds are higher in the fast wind streams.We identify SOHO LASCO fast west-limb or halo CMEs that occurred when the Earth was in fast wind streams indicated by low values of the solar wind O~7/O~6 ratios from the ACE satellite.Those CMEs would be expected to be associated with fewer or weaker SEP events than comparable CMEs in slow wind regions.However,we find no differences between the fast CMEs in fast wind and the fast CMEs in slow wind in terms of their associated SEP intensities or SEP-associated CME speeds.
机译:如果在阳光附近的太阳能粒子(SEP)是由于冠状大量喷射(CMES)驱动的冲击,那么慢速而不是快速太阳风流的SEP加速应该受到青睐,因为Alfven和太阳风流量速度都较高在快速的风流中。我们识别当地球在ace卫星的太阳风量〜7 / O〜6比率的低值时出现的快速风流时发生的SOHO Lasco Fast-Limb或Halo CMES。预计将与慢风地区的比较CME相比较少或较弱。然而,在其相关的SEP强度或SEP的条件下,我们发现快速风的快速CME和慢速的快速CME之间没有差异。相关的CME速度。

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