27 citations · 33 across the 2 of their papers we have counts for
5 papers · 1 filter
CME liftoff with high-frequency fragmented type II burst emission
S. Pohjolainen, J. Pomoell, R. Vainio
Aims: Solar radio type II bursts are rarely seen at frequencies higher than a few hundred MHz. Since metric type II bursts are thought to be signatures of propagating shock waves,…
Turbulence transmission in parallel modified shocks using ray tracing
Joni Tammi, Rami Vainio
We apply a semi-classical approach of handling waves as quasiparticle gas in a slowly varying flow -- analogous to ray tracing -- to calculate the Alfven wave transmission paramete…
Particle acceleration in thick parallel shocks with high compression ratio
Joni J. P. Virtanen, Rami Vainio
We report studies on first-order Fermi acceleration in parallel modified shock waves with a large scattering center compression ratio expected from turbulence transmission models.…
Stochastic Particle Acceleration in Parallel Relativistic Shocks
Joni J. P. Virtanen, Rami Vainio
We present results of test-particle simulations on both the first- and the second-order Fermi acceleration for relativistic parallel shock waves. Our studies suggest that the role…
Stochastic Acceleration in Relativistic Parallel Shocks
Joni J. P. Virtanen, Rami Vainio
(abridged) We present results of test-particle simulations on both the first and the second order Fermi acceleration at relativistic parallel shock waves. We consider two scenarios…