On the albedo of the interplanetary dust |
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Authors: | Martha S. Hanner |
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Affiliation: | Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91103, USA |
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Abstract: | The zodiacal light brightness and measured spatial density of the interplanetary dust lead to a mean geometric albedo of 0.24 for the dust particles near 1 AU; whereas the composition of collected micrometeroids suggests a geometric albedo ?0.1. The data do not support the very low albedo (?0.01) proposed by A. F. Cook [Icarus33 (1978), 349–360]. The evidence is against a change in the mean particle albedo between 0.1 and 2 AU. Beyond 2 AU the data are unclear and a change in albedo is not ruled out. |
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