Quadrantid meteor shower - A quarter-century of radar observations

Details Quadrantid meteor shower - A quarter-century of radar observations Quadrantid meteor shower - A quarter-century of radar observations

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984baicz..35...14m&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 35, no. 1, 1984, p. 14-28.

Astronomy and Astrophysics

Astronomy

12

Quadrantid Meteoroids, Radar Measurement, Radio Meteors, Annual Variations, Normal Density Functions, Radar Echoes, Tables (Data)

Scientific paper

The activity of the annual Quadrantid meteor shower was studied from the radar observations at Springhill (Canada) and Ondřejov (Czechoslovakia) in the period 1958 - 1981. Coverage of the shower activity is improved by combining the data from stations displaced in longitude. The radio meteors were analysed in three groups of echo duration: τ < 1s, 1 ≤ τ < 8s, and τ ≥ 8s. A double-Gaussian model provides a reasonable representation of the cross-sectional activity. The shape of the activity contours is asymmetric, characterized by a slower increase in rates before the maximum followed by a faster decay. Small particles are more dispersed than larger ones. The position of the maximum flux varies considerably from year to year.

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