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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

References

Anon, ., 1964. Tables of Standard Atmosphere, Moscow Publ. House of Standards.Google Scholar
Davies, J. G., and Gill, J. C., 1960. Radio echo measurements of the orbits of faint sporadic meteors, Mon. Not. Roy. Astron. Soc, 121, 437–162.Google Scholar
Evans, J. V., 1966. Radar observations of meteor decelerations, J. Geophys. Res., 71, 171–188.Google Scholar
Greenhow, J. S., 1963. Limitations of radar techniques for the study of meteors, Smithson. Contrib. Astrophys., 7, 5–17.Google Scholar
Hawkins, G. S., 1963. The Harvard radio meteor project, Smithson. Contrib. Astrophys., 7, 53–62.Google Scholar
Hawkins, G. S., and Southworth, R. B., 1961. Orbital elements of meteors, Smithson. Contrib. Astrophys., 4, 85–95.Google Scholar
Hawkins, G. S., Southworth, R. B., and Rosenthal, S., 1964. Preliminary analysis of meteor radiants and orbits, Harvard College Obs., Smithson. Astrophys. Obs., Radio Meteor Project, Res. Rept. No. 7, 32 pp.Google Scholar
Herlofson, N., 1948. The theory of meteor ionization, Rept. Progr. Phys., 11, 444–454.Google Scholar
Jacchia, L. G., 1949. Photographic meteor phenomena and theory, Harvard College Obs. and Center of Analysis, Mass. Inst. Tech., Tech. Rept., No. 3, 36 pp.Google Scholar
Jacchia, L. G., and Whipple, F. L., 1961. Precision orbits of 413 photographic meteors, Smithson. Contrib. Astrophys., 4, 97–129.CrossRefGoogle Scholar
Kascheev, B. L., Lebedinets, V. N., and Lagutin, M. F., 1967. Meteoric Phenomena in the Earth’s Atmosphere, Moscow, Publ. House Nauka.Google Scholar
Korpusov, V. N., 1970. Measurement of meteor velocities and radiants at a wavelength of 12 m, Trans. Inst. Experimental Meteorology, No. 16, pp. 88–99, Moscow.Google Scholar
Korpusov, V. N., and Lebedinets, V. N., 1970. Orbits o? radio meteors, Astron. Vestnik, USSR, 4, 102–107 (Solar System Res., 4, 82-88).Google Scholar
Lebedinets, V. N., 1963. Density of meteoric matter in the vicinity of the Earth’s orbit, Astron. Zh., 40, 719–732 (1964, Soviet Astr. A J, 7, 549–558).Google Scholar
Lebedinets, V. N., 1966. Physical Meteor Theory and Meteor Matter in the Earth’s Orbit’s Vicinity from Radar Observation Results, A Doctor’s Degree, Obninsk, USSR.Google Scholar
Lebedinets, V. N., and Portnyagin, Y. I., 1966a. The mechanism of the fragmentation of small meteoric bodies in the atmosphere, Dokl. Akad. Nauk. USSR, 168, 543–546.Google Scholar
Lebedinets, V. N., and Portnyagin, Y. I., 1966b. The initial radius of an ionized meteoric trail, Geomagnetizm i Aeronomiya, 6, 712–716 (Geomagn. and Aeronom., 6, 544–547).Google Scholar
Lebedinets, V. N., and Portnyagin, Y. I., 1967. Fragmentation of dense meteoroids in the atmosphere, Astron. Zh., 44, 874–888 (1968, Soviet Astr. AJ, 11, 700–711).Google Scholar
Lebedinets, V. N., Portnyagin, Y. I., and Sosnova, A. K., 1969. Drag and heat transfer coefficients of meteorites. I. Weak shielding conditions, Astron. Vestnik, USSR, 3, 223–229 (Solar System Res., 3, 187–191).Google Scholar
Lebedinets, V. N., and Shushkova, V. B., 1968. Evaporation and acceleration of small meteoroids, in Physics and Dynamics of Meteors, IAU Symp. No. 33, edited by Kresák, L. and Millman, P. M., Dordrecht, Holland, D. Reidel Publ. Co., 193–204.Google Scholar
Lebedinets, V. N., and Sosnova, A. K., 1968. Radio reflections from meteor trails, in Physics and Dynamics of Meteors, IAU Symp. No. 33, edited by Kresák, L. and Millman, P. M., Dordrecht, Holland, D. Reidel Publ. Co., 27–44.Google Scholar
Lebedinets, V. N., and Sosnova, A. K., 1969. Radiowave reflection from meteor trains. II. Diffraction pictures, Geomagnetizm i Aeronomiya, 9, 680–688 (Geomagn. and Aeronom., 9, 550–556).Google Scholar
Lovell, A. C. B., and Clegg, J. A., 1948. Characteristics of radio echoes from meteor trails: I. The intensity of the radio reflections and electron density in the trails, Proc. Phys. Soc, 60, 491–498.Google Scholar
McCrosky, R. E., and Posen, A., 1961. Orbital elements of photographic meteors, Smithson. Contrib. Astrophys., 4, 15–84.Google Scholar
Öpik, E. J., 1958a. Physics of meteor flight in the atmosphere, Interscience. New York.Google Scholar
Öpik, E. J., 1958b. Problems in the physics of meteors, Amer. J. Phys., 26, 70–80.Google Scholar
Sida, D. W., 1969. The production of ions and electrons by meteoritic processes, Mon. Not. Roy. Astron. Soc, 143, 37–47.Google Scholar
Southworth, R. B., 1962. Deceleration of radio meteors (abstract, Amer. Astron. Soc), Astron. J., 67, 283.Google Scholar
Verniani, F., 1966. Physical characteristics of 320 faint radio meteors, J. Geophys. Res., 71, 2749–2762.CrossRefGoogle Scholar
Verniani, F., 1969. Structure and fragmentation of meteoroids, Space Sci. Rev., 10, 230–261.Google Scholar
Verniani, F., and Hawkins, G. S., 1965. Masses, magnitudes, and densities of 320 radio meteors, Harvard College Obs., Smithson. Astrophys. Obs., Radio Meteor Project, Research Rept. No. 12, 35 pp.Google Scholar
Vinogradov, A. P., 1965. The composition of meteorites, Geokhimiya, 8, 1275–1312.Google Scholar
Whipple, F. L., 1943. Meteors and the Earth’s upper atmosphere, Rev. Mod. Phys., 15, 246–264.CrossRefGoogle Scholar
Whipple, F. L., 1954. Photographic meteor orbits and their distribution in space, Astron. J., 59, 201–217.Google Scholar