Field-aligned ion beams upstream of the earth's bow shock: Evidence for a magnetosheath source
Journal Article
·
· Geophys. Res. Lett.; (United States)
High time resolution ISEE-1 and -2 observations of upstream field-aligned ion beams at several crossings of the Earth's bow shock indicate that some beams are due to high-energy magnetosheath particles leaking through the shock into the upstream region. The distribution immediately downstream of these oblique (theta/sub Bn/approx.50/sup 0/) shocks consists of a 'core' of directly transmitted, slightly heated ions plus a crescent-shaped, high-velocity distribution, centered roughly on a magnetic field in the direction toward the upstream region, with a fairly well-defined low velocity cut-off.
- Research Organization:
- Los Alamos National Laboratory, Los Alamos, NM 87545
- OSTI ID:
- 5019233
- Journal Information:
- Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 10:12; ISSN GPRLA
- Country of Publication:
- United States
- Language:
- English
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