7
July 14, 2005 2005 SHINE Workshop Keauhou, Hawaii, USA
Finite-Time
Shock Acceleration
lProbability approach (like Bell 1978, Drury 1983)
lAcceleration rate, r = 1/Δt Escape rate, e
Time at present (age of shock), t
Simulation parameters:
lλ = λ0 (P/ MV)α so vary λ0 and
α (shorter λ0 is
equivalent
to longer time duration)lTime t fixed by observations, v0 = 200 km/s in wind frame,
shock angles & speeds as observed.