Lower and upper limits to comet p/halley solid material loss rate |
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Authors: | J F Crifo |
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Institution: | IAS, CNRS, BP 10, F91371, Verrières-le-Buisson Cedex, France |
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Abstract: | A radiative hydrodynamic model of comet P/Halley is used to investigate quantitatively the constraints imposed onto the Comet loss rate in solids by both the in-situ data and the remote sensing data. In particular, for the first time, the in-situ data are used to fit composite spectra extending from near-IR wavelengths to the microwave region. Also, for the first time the uncertainty affecting the ejection velocity of large grains is taken into account. The results suggest that only future rendez-vous studies of the
grain density
in the vicinity of a comet would be able to provide definitely reliable values of the comet loss rate. |
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Keywords: | |
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