Measurements of plasma flow at the dawn magnetopause by Voyager 1

Details Measurements of plasma flow at the dawn magnetopause by Voyager 1 Measurements of plasma flow at the dawn magnetopause by Voyager 1

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6483l&link_type=abstract

Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6483-6488.

Other

Geomagnetic Tail, Magnetohydrodynamic Flow, Magnetopause, Particle Flux Density, Voyager 1 Spacecraft, Energetic Particles, Geomagnetism, Graphs (Charts), Ion Currents, Magnetic Effects

Scientific paper

Measurements are presented showing strong tailward flow of ions along the dawn magnetopause as the Voyager 1 spacecraft crossed the earth's magnetosphere boundary following launch on September 5, 1977. With one exception all of the observed flows occur outside the magnetopause. The particle flux measurements at energies of at least about 30 keV, together with the observed magnetic-field signatures of the boundary crossing, are consistent with a minimum tailward ion energy flow of about (2-7) x 10 to the 17th erg/s at the time of observation. High-time-resolution particle data indicate that the ion flow can vary on a time scale of about 400 ms. These results, together with recent results from several other spacecraft, show conclusively that a source of energetic particles exists sunward of the dawn-dusk meridian

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