Publication Date:
2019-06-28
Description:
The field-aligned current density above a discrete auroral arc has been deduced from the downward electron flux and magnetic field measurements onboard the rocket Porcupine flight 4. Both measurements show that the field-aligned current density is, in spite of decreasing peak energies towards the edge of the arc, about 4 times higher there than in the center of the arc. This can be explained by using the single particle description for an anisotropic electron source distribution.
Keywords:
GEOPHYSICS
Type:
Geophysical Research Letters (ISSN 0094-8276); 12; 53-56
Format:
text