Dynamical evolution of comets and the problem of cometary fading |
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Authors: | V. V. Emel'yanenko and M. E. Bailey |
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Affiliation: | (1) School of Computing and Mathematical Sciences, Liverpool John Moores University, Byrom Street, L3 3AF Liverpool, U.K. |
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Abstract: | Possibilities to explain the observed 1/a-distribution are discussed in the light of improved understanding of the dynamical evolution of long-period comets. It appears that the fading problem applies both to single-injection and continuous-injection models. Although uncertainties due to nongravitational effects do not allow detailed results to be drawn from the observed 1/a-distribution at small perihelion distance q, that for q 1.5 AU shows that a constant fading probability cannot explain all the features of the observed distribution. Assuming that comets can reappear following a period of fading, values for the assumed constant fading and renewal probabilities, and the total cometary flux have been estimated for q > 1.5 AU. |
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Keywords: | Comets dynamics fading problem |
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