The decay of luminosity in the trains of moderately bright meteors

Details The decay of luminosity in the trains of moderately bright meteors The decay of luminosity in the trains of moderately bright meteors

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978p%26ss...26..697p&link_type=abstract

Planetary and Space Sciences, vol. 26, July 1978, p. 697-701. Research supported by the South African Council for Scientific and

Physics

Atmospheric Ionization, Light Emission, Luminous Intensity, Meteor Trails, Atmospheric Chemistry, Electron-Ion Recombination, Gas Dissociation

Scientific paper

The emission of light arising from the dissociative recombination with electrons of meteoric ions that have been oxidized by ozone is discussed, and it is shown that this radiation has the characteristics necessary to explain the main features of luminosity observed below approximately 95 km in the trains of meteors in the approximate magnitude range 0 to -5, namely: (1) that most enduring luminosity is obtained from heights between about 85 and about 95 km, (2) that in this region the luminosity decays with time according to (1 + k times time) to the -2nd (rather than in an exponential fashion) with a rate constant varying from approximately 0.3/s near 90 km to about 3/s below 85 km, and (3) that the spectrum contains mainly lines characteristic of neutral calcium, iron and magnesium.

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