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Zodiacal light as an indicator of interplanetary dustThe most striking feature of the night sky in the tropics is the zodiacal light, which appears as a cone in the west after sunset and in the east before sunrise. It is caused by sunlight scattered or absorbed by particles in the interplanetary medium. The zodiacal light is the only source of information about the integrated properties of the whole ensemble of interplanetary dust. The brightness and polarization in different directions and at different colors can provide information on the optical properties and spatial distribution of the scattering particles. The zodiacal light arises from two independent physical processes related to the scattering of solar continuum radiation by interplanetary dust and to thermal emission which arises from solar radiation that is absorbed by interplanetary dust and reemitted mainly at infrared wavelengths. Attention is given to observational parameters of zodiacal light, the methods of observation, errors and absolute calibration, and the observed characteristics of zodiacal light.
Document ID
19780054319
Document Type
Other - Collected Works
Authors
Weinberg, J. L. (New York, State University Albany, N.Y., United States)
Sparrow, J. G. (Weapons Research Establishment Aeronautical Research Laboratories, Melbourne, Australia)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSG-8040
CONTRACT_GRANT: NAS2-7963
CONTRACT_GRANT: NSG-7093
Distribution Limits
Public
Copyright
Other