The Meteoroid Environment: Shower and Sporadic Meteors

Computer Science

Scientific paper

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Scientific paper

Interplanetary particles larger than 10^{13} kg (3 microns) create significant light and ionization when colliding with the atmosphere of the Earth. This provides a way to study the higher mass component of the interplanetary dust complex, since the collecting area of the Earth's atmosphere is large and the meteors resulting from these impacts are easily recorded with optical cameras and radars. Particles in this size range have too low a flux relative to the size scale of in-situ dust detectors to be captured in dust detectors, and are difficult to detect remotely. Meteoroids are generally divided into two broad categories: shower meteors, which appear to come from narrow radiants as seen from the surface of the Earth and occur over a limited range of the Earth's orbit every year, and sporadic meteors, which are always active and come from diffuse radiants. Recent advances in observing technology, particularly in automated data analysis, have produced great advances in the understanding of meteoroid distribution at 1 AU.

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