Ohmic heating as evidence for strong field-aligned currents in filamentary aurora

Details Ohmic heating as evidence for strong field-aligned currents in filamentary aurora Ohmic heating as evidence for strong field-aligned currents in filamentary aurora

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...106.1785l&link_type=abstract

Journal of Geophysical Research, Volume 106, Issue A2, p. 1785-1794

Physics

19

Ionosphere: Particle Precipitation, Ionosphere: Plasma Temperature And Density, Magnetospheric Physics: Current Systems

Scientific paper

A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one-dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field-aligned current can account for the required heat source.

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