Physics
Scientific paper
Jun 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..551m&link_type=abstract
Geophysical Research Letters, vol. 5, June 1978, p. 551-554. National Research Council of Canada
Physics
4
Auroras, Energy Transfer, Light Emission, Nitrogen Ions, Particle Energy, Isis Satellites, Magnetic Effects, Northern Hemisphere, Onboard Equipment, Photometers, Remote Sensors
Scientific paper
Remote sensing of the N2(+) 1NG 3914-A auroral emission using data from the auroral scanning photometer onboard the Isis-2 satellite is employed to determine the energy deposition rate of auroral particles. Techniques have been developed for removing the effects of ground albedo and for obtaining integrated intensities even when the emission region is visible only at earth's limb. Data from nine Northern Hemisphere passes have been selected to illustrate the variation in energy deposition rate with magnetic activity. Measured photon flux rates (photons/sec per deg of longitude) vary from about 2 by 10 to the 22nd power to 1.9 by 10 to the 25 power. The peak photon flux for a given pass can occur at magnetic local times varying from 21 to 05 hours. The inferred range of global energy deposition rates (for electron energies 30 eV and above) is 4 by 10 to the 16th power to 1 by 10 to the 19th power erg/sec.
Anger Clifford D.
Murphree John S.
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