A Reference Meteor Magnitude for Intercomparable Fluxes

Author:

Moorhead Althea V.ORCID,Vida DenisORCID,Brown Peter G.ORCID,Campbell-Brown Margaret D.ORCID

Abstract

Abstract The rate at which meteors pass through Earth’s atmosphere has been measured or estimated many times over; existing flux measurements span at least 12 astronomical magnitudes, or roughly five decades in mass. Unfortunately, the common practice of scaling flux to a universal reference magnitude of +6.5 tends to collapse the magnitude or mass dimension. Furthermore, results from different observation networks can appear discrepant due solely to the use of different assumed population indices, and readers cannot resolve this discrepancy without access to magnitude data. We present an alternate choice of reference magnitude that is representative of the observed meteors and minimizes the dependence of flux on population index. We apply this choice to measurements of recent Orionid meteor shower fluxes to illustrate its usefulness for synthesizing independent flux measurements.

Funder

NASA ∣ Marshall Space Flight Center

Canadian Government ∣ Natural Sciences and Engineering Research Council of Canada

Publisher

American Astronomical Society

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