Gradual hard X-ray events and second phase particle acceleration |
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| Authors: | S W Kahler |
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| Institution: | (1) Physics Research Division, Emmanuel College, 02115 Boston, MA, U.S.A. |
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| Abstract: | In the second phase acceleration process the close time coincidence between the gradual hard X-ray burst and the type II shock wave is presumed due to shock acceleration of the electrons producing the gradual phase burst. We point out that recent studies of gradual hard X-ray bursts place the source heights well below the heights of 2–10 × 105 km traversed by the shock. Gradual phase energetic electrons therefore cannot be accelerated in the shock but must be produced elsewhere. We propose the loop systems of long decay X-ray events (LDEs) as the sites of the gradual phase electron production. |
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