The mass distribution of large meteoroids

Astronomy and Astrophysics – Astronomy

Scientific paper

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Interplanetary Medium, Mass Distribution, Meteoroid Showers, Sporadic Meteoroids, Asteroids, Astronomical Photography, Astronomical Photometry, Luminous Intensity, Particle Mass, Particle Size Distribution

Scientific paper

Three independent sets of meteor observations are examined which yield reliable estimates of the mass distribution index for large meteoroids having masses of 10 to 1 million g. The data considered are taken from visual-magnitude studies, photographic observations, and Prairie Fireball Network photometry of shower and sporadic meteors. All three of these number-luminosity meteor investigations are found to yield a mass distribution index of close to 1.58 for large sporadic meteors with absolute visual magnitudes of -2 to -15, which corresponds to the mass range from about 10 to 10 million g. It is noted that these results fill a gap in existing information on the size distribution of interplanetary material at about 1 AU and reveal a discontinuity in the particle distribution function at a mass of approximately 10 g.

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