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Migration of Interplanetary Dust
Author(s) -
IPATOV S I.,
MATHER J C.,
TAYLOR P A.
Publication year - 2004
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1311.005
Subject(s) - interplanetary dust cloud , astrobiology , asteroid , comet , solar system , earth (classical element) , physics , comet dust , venus , cosmic dust , planet , particle (ecology) , interplanetary medium , silicate , astronomy , interplanetary spaceflight , solar wind , geology , nuclear physics , oceanography , plasma
A bstract : We numerically investigate the migration of dust particles with initial orbits close to those of the numbered asteroids, observed trans‐Neptunian objects, and comet Encke. The fraction of silicate asteroidal particles that collided with the Earth during their lifetime varied from 11% for 100 micron particles to 0.008% for 1 micron particles. Almost all asteroidal particles with diameter d ≥ 4 microns collided with the Sun. For migrating asteroidal dust particles, the peaks in semimajor axis distribution at the n :( n + 1) resonances with Earth and Venus, and the gaps associated with the 1:1 resonances with these planets are more pronounced for larger particles. The probability of collisions of cometary particles with the Earth is smaller than for asteroidal particles, and this difference is greater for larger particles.