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Fragmenting Particles During 1989-1994 Perseid Radar Observations

Published online by Cambridge University Press:  27 February 2018

M. Šimek
M. Šimek*
Affiliation:
Astronomical Institute of the Czech Academy of Sciences, 251 65 Ondřejov, Czech Republic

Abstract

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The occurrence of fragmenting particles was investigated from radar observations of the Perseids at Ondřejov Observatory. Diurnal patterns of fragmenting meteoroids are presented. Their minimum occurrence coincides with the culmination of the Perseid radiant while the maximum appears at the time of sunset at meteor heights. Solar longitude of the main contribution of fragmenting meteoroids at L⊙ = 138°86±0°04 (equinox 1950.0) fits with the peak activity of the new filament in the stream. This supports the concept of the low age of the filament. The maximum proportion of fragmenting particles occurred in 1991.

Type
II. Meteors
Information
International Astronomical Union Colloquium , Volume 150: Physics, Chemistry and Dynamics of Interplanetary Dust , 1996 , pp. 79 - 82
Copyright
Copyright © Astronomical Society of the Pacific 1996

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