Flux densities of meteoroids derived from optical double-station observations
| Autor: | S. Drolshagen, Theresa Ott, Esther Drolshagen, Björn Poppe, Jana Kretschmer, Gerhard Drolshagen, Detlef Koschny |
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| Rok vydání: | 2017 |
| Předmět: |
Meteor (satellite)
Physics 010504 meteorology & atmospheric sciences Meteorology Meteoroid Flux Astronomy and Astrophysics Astrophysics Orders of magnitude (angular velocity) 01 natural sciences Space and Planetary Science Observatory 0103 physical sciences Luminous efficacy Constant (mathematics) 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Planetary and Space Science. 143:230-237 |
| ISSN: | 0032-0633 |
| DOI: | 10.1016/j.pss.2016.12.007 |
| Popis: | We have developed a new method to determine flux densities of meteoroids using optical double-station meteor observations. It is based on the assumption that the velocity distribution is constant for all mass bins. By comparing the observed velocity distribution with a model distribution we determine de-biasing factors to correct for meteors too slow to emit a detectable amount of light. We use this method to correct a dataset of about 20000 double-station meteoroids detected over a period of about 3.5 years with the Canary Island Long-Baseline Observatory (CILBO). The resulting cumulative flux density has a slope comparable to the model of Grun et al. (1985). The largest uncertainty is the luminous efficiency. Depending on which values for the luminous efficiency are assumed, the mass estimate deviates by about one to 1.5 orders of magnitude. Using the luminous efficiencies derived by Weryk et al. (2013) results in an excellent agreement of our data with the Grun data. |
| Databáze: | OpenAIRE |
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