Size Distribution of Cometary Dust Particles

Details Size Distribution of Cometary Dust Particles Size Distribution of Cometary Dust Particles

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sosyr..35..320m&link_type=abstract

Solar System Research, v. 35, Issue 4, p. 320-326 (2001).

Physics

1

Scientific paper

We considered two types of size distributions of cometary dust particles, namely, a: f(a) ~ a^-(β + 1)(for comet Encke) and f(a) ~aa^{-(A_d + B_dloga)}(for comet Halley). Using these distributions, expressions for the loss of the comet's absolute brightness per revolution, ΔH_10, are obtained; this quantity depends on the relative volume content of dust in the nucleus, f_v; the granulometric composition of dust (β or A_d, B_d, a_min, anda_max); the nucleus size and density; and the orbital elements P, q, and e. Under reasonable assumptions on the values of the above-mentioned physical parameters, a nucleus radius can be estimated from the value of ΔH_10obtained from observations.

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