AbstractThe orbital evolution of Jupiter-family comets (JFCs) and asteroidal, trans-Neptunian, and cometary dust particles under the gravitational influence of planets was integrated. For dust particles, we also considered the Poynting–Robertson drag, radiation pressure, and solar wind drag. Results of our runs were compared with the spacecraft observations of the spatial density of dust particles and with the WHAM observations of velocities of zodiacal particles. This comparison shows that the fraction of cometary dust particles of the overall dust population inside Saturn’s orbit is significant and can be dominant. Our studies of migration of small bodies indicate that some former JFCs could move for millions of years inside Jupiter’s orbit and so they could produce a lot of dust. The probability of a collision of an asteroidal or cometary dust particle with the Earth during its lifetime was maximum at diameter d∼100μm. At d<10μm, the probability of a collision of a trans-Neptunian particle with the Earth during a lifetime of the particle was less than that for an asteroidal particle by only a factor of several.
Migration of small bodies and dust to near-Earth space
Advances in Space Research ; 37 , 1 ; 126-137
2005-05-25
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Migration of small bodies and dust to near-Earth space
Online Contents | 2006
|Migration of small bodies and dust to near-Earth space
British Library Conference Proceedings | 2006
|Small Space Vehicle for Earth and Near-Earth Space Monitoring
British Library Conference Proceedings | 1996
|On the Possible Existence of Radiation Dust Belts in Near-Earth Space
Springer Verlag | 2000
|On the Possible Existence of Radiation Dust Belts in Near-Earth Space
Online Contents | 2000
|