Magnetosphere as a source of energetic magnetosheath ions

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL014i010p01011· OSTI ID:5715298

Sibeck, D G; McEntire, R W; Lui, A T.Y.; Krimigis, S M; Zanetti, L J; Potemra, T A

The dominant source of energetic ions upstream of the earth's bow shock remains controversial. Charge Composition Explorer (CCE) energetic (E>10--15 keV) ion and magnetic field measurements near the spacecraft's 8.8 R/sub E/ apogee during in a period of greatly increased solar wind dynamic pressure on November 1, 1984 determine the sense of energetic ion streaming in the dayside magnetosphere, the magnetosheath, and the solar wind. The ions stream away from an appropriately compressed model magnetopause at all times in the magnetosheath and solar wind. The flux of energetic ions in the magnetosheath and solar wind rises to, but never exceeds, that in the magnetosphere. The observations are consistent with a magnetospheric, rather than a bow shock (Fermi acceleration) source for the ions in the magnetosheath during this event. copyright American Geophysical Union 1987

• Research Organization: The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland 20707
• OSTI ID: 5715298
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 14:10; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ION DENSITY
ION DRIFT
MAGNETOSHEATH
RADIATION STREAMING
SOLAR ACTIVITY
SOLAR WIND