Abstract
Voyager 2 data from 47 AU shows a delay of about 6 days between the
arrival of interplanetary shock fronts and the peaks in the
0.52-1.45 MeV energetic proton flux. Similar data recorded when
Voyager 2 was at 5 AU shows that the shock fronts and the peaks in the
energetic proton flux are virtually coincident. If injection and
acceleration is taking place at the shock fronts one would expect the
peaks in the energetic proton flux and the shocks to coincide. We show
that the delay observed at 47 AU can be understood if the injection and
acceleration of energetic protons becomes negligibly small some time
before the shocks are observed.
Original language | English |
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Pages (from-to) | 509-512 |
Journal | Geophysical Research Letters |
Volume | 27 |
Publication status | Published - 1 Feb 2000 |
Keywords / Materials (for Non-textual outputs)
- Interplanetary Physics: Cosmic rays
- Interplanetary Physics: Interplanetary shocks
- Interplanetary Physics: Pickup ions