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CORRELATIONS RELATED TO SEP EVENT SIZE IN LARGE SOLAR ERUPTIVE EVENTS

CORRELATIONS RELATED TO SEP EVENT SIZE IN LARGE SOLAR ERUPTIVE EVENTS. Gordon Emslie Western Kentucky University. OUTLINE. SEP acceleration by CMEs Dependence on CME mass Dependence on CME velocity Energy Scalings in Large SEEs Overall Dependence of SEP intensity on CME mass

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CORRELATIONS RELATED TO SEP EVENT SIZE IN LARGE SOLAR ERUPTIVE EVENTS

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  1. CORRELATIONS RELATED TO SEP EVENT SIZE IN LARGESOLAR ERUPTIVE EVENTS Gordon Emslie Western Kentucky University

  2. OUTLINE • SEP acceleration by CMEs • Dependence on CME mass • Dependence on CME velocity • Energy Scalings in Large SEEs • Overall • Dependence of SEP intensity on CME mass • Dependence of SEP intensity on CME velocity • Conclusions

  3. CME Speed Distribution

  4. E ~ v4 Note: this is v in plane of sky. Data from STEREO generally confirms this behavior, but with a somewhat steeper (E,v) slope.

  5. Kahler (1996) E ~ v6

  6. ~7%

  7. ~7%

  8. ~30%

  9. ~20%

  10. ~15%

  11. ~4% ~7%

  12. Correlation of m with v

  13. NONE!

  14. Correlation of ECME with (m, v)

  15. Correlation of ESEP with (m, v)

  16. NONE!

  17. NONE!

  18. Correlation of ESEP/ECME with (m, v)

  19. Conclusions • Unlike for small events, for very large events there is no statistically significant correlation between • SEP energy and CME mass • SEP/CME ratio and CME mass • SEP energy and CME velocity • SEP/CME ratio and CME velocity

  20. Conclusions • Is there a saturation effect? • Quiz: what type of solar eruptive event gives rise to an extreme SEP event? (a) an event with a very fast CME (b) an event with a very massive CME (c) a very energetic event overall (d) none of the above

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