Journal Article

Mass distribution indices of sporadic meteors using radar data

R. C. Blaauw, M. D. Campbell-Brown and R. J. Weryk

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 412, issue 3, pages 2033-2039
Published in print April 2011 | ISSN: 0035-8711
Published online April 2011 | e-ISSN: 1365-2966 | DOI:
Mass distribution indices of sporadic meteors using radar data

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The mass distribution index of sporadic meteors and the indices of specific sporadic sources have been measured using data from 2007 to 2010 from the Canadian Meteor Orbit Radar. Single-station data from the 29.85-MHz system were used and the trends throughout the year are examined. We find that the average values for the sources are approximately equal, but the annual variation of each source is unique. We find that the overall average sporadic mass index is 2.17 ± 0.07, less than the frequently cited 2.34. The variation in the mass index throughout the year can provide information about the meteoroid populations that the Earth is encountering at different parts of its orbit.

Keywords: techniques: radar astronomy; meteorites, meteors, meteoroids

Journal Article.  4885 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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