Fully correcting the meteor speed distribution for radar observing biases
| Autor: | Peter Brown, Denis Heynen, William J. Cooke, Margaret Campbell-Brown, Althea V. Moorhead |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Meteor (satellite)
education.field_of_study 010504 meteorology & atmospheric sciences Mass distribution Meteoroid Population Astronomy and Astrophysics 01 natural sciences law.invention Data set Space and Planetary Science law Ionization 0103 physical sciences Orbit (dynamics) Environmental science Radar education 010303 astronomy & astrophysics 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Planetary and Space Science. 143:209-217 |
| ISSN: | 0032-0633 |
| Popis: | Meteor radars such as the Canadian Meteor Orbit Radar (CMOR) have the ability to detect millions of meteors, making it possible to study the meteoroid environment in great detail. However, meteor radars also suffer from a number of detection biases; these biases must be fully corrected for in order to derive an accurate description of the meteoroid population. We present a bias correction method for patrol radars that accounts for the full form of ionization efficiency and mass distribution. This is an improvement over previous methods such as that of Taylor (1995) , which requires power-law distributions for ionization efficiency and a single mass index. We apply this method to the meteor speed distribution observed by CMOR and find a significant enhancement of slow meteors compared to earlier treatments. However, when the data set is severely restricted to include only meteors with very small uncertainties in speed, the fraction of slow meteors is substantially reduced, indicating that speed uncertainties must be carefully handled. |
| Databáze: | OpenAIRE |
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