The initial train radius of sporadic meteors

The height distributions, velocity distributions and flux measurements of underdense echoes determined from meteor radar observations are significantly affected by the attenuation associated with the initial radius of meteor trains. Dual-frequency radar observations of a very large set of sporadic r...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 359; no. 3; pp. 1131 - 1136
Main Authors Jones, J., Campbell-Brown, M.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Ltd 01.05.2005
Blackwell Science
Oxford University Press
Subjects
Astrophysics
meteoroids
meteors
Meteors & meteorites
meteors, meteoroids
Radar
Velocity
meteors, meteoroids
Meteor train
Attenuation
Velocity distribution
Time delay
Meteors
Meteoroids
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Summary:The height distributions, velocity distributions and flux measurements of underdense echoes determined from meteor radar observations are significantly affected by the attenuation associated with the initial radius of meteor trains. Dual-frequency radar observations of a very large set of sporadic radar meteors at 29 and 38 MHz yield estimates of the initial train radius and its dependence on height and meteoroid speed as determined by the time-delay method. We provide empirical formulae that can be used to correct meteoroid fluxes for the effect of initial train radius at other radio frequencies.
Bibliography:istex:37E7606DFE30BB8923B39970119C2220758A9B7B
ark:/67375/HXZ-VJDBQ19F-Z
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2005.08972.x