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Ablation in Meteors

Published online by Cambridge University Press:  12 April 2016

V. N. Lebedinets
V. N. Lebedinets*
Affiliation:
Astronomical Council, Academy of SciencesMoscow, U.S.S.R.

Extract

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Photographic and Radar Observations of meteors reveal essential discrepancies from the simplest physical theory of meteors. The simplest theory (Whipple, 1943; Herlofson, 1948; Kascheev et al., 1967) proceeds from the following suppositions: (1) the meteoroid is a dense non-fragmenting body; (2) the sole ablation mechanism is evaporation; and (3) the whole energy transferred to a body by colliding air molecules is spent on evaporation. In addition, the simplest theory of radiowave reflection from meteor trails that does not take into account diffusive and thermodiffusive expansion of a meteor trail and change of the electron line density along the trail is used for the interpretation of the results of radar observations.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 13: Evolutionary and Physical Properties of Meteoroids , June 1971 , pp. 259 - 269
Copyright
Copyright © NASA 1971

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