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Marty Lee Durham, New Hampshire USA

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1 Marty Lee Durham, New Hampshire USA
An Analytical Theory of Diffusive Shock Acceleration for Gradual SEP Events Marty Lee Durham, New Hampshire USA

2 Acceleration at a CME-Driven Shock
Lee, 2005

3 First-Order Fermi Acceleration
v vz

4 Upstream Waves I Tsurutani et al., 1983

5 Upstream Waves II Hoppe et al., 1981

6 Instability Mechanism
v VA vz

7 January 20, 2005 GLE Event Bieber et al., 2005

8 Large SEP Events Reames and Ng, 1998

9 SEP Energy Spectra Tylka et al., 2001

10 Shock Geometry Cane et al., 1988

11 Shock Acceleration I

12 Shock Acceleration II

13 Shock Acceleration III

14 Shock Acceleration IV

15 Shock Acceleration V

16 Analytical and Numerical Calculations Proposed I
1. Calculation of with dependence on 2. Role of shock obliquity (Tylka and Lee, 2006)

17 Analytical and Numerical Calculations Proposed II
3. Form of exponential rollover with dependence on 4. Ion spatial profiles upstream of the shock 5. Escaping ions and the streaming limit 6. Inferring from ESP events

18 Spectral Rollover: Mewaldt et al.;

19 Work Plan: Way Behind! Year 1: Complete and publish analytical work
Year 2: Develop the numerical algorithm and test the analytical approximation. Year 3: Systematic comparison of results with selected events


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