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Taurid Complex Meteoroids Detected Near Aphelion With Ulysses

Taylor, A.D., McDonnell, J.A.M., Grun, E. (1996) Taurid Complex Meteoroids Detected Near Aphelion With Ulysses. Advances in Space Research, 17 (12). pp. 171-175. ISSN 0273-1177. (doi:10.1016/0273-1177(95)00776-B) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:19088)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1016/0273-1177(95)00776-B

Abstract

Between 3.4 and 4.0 AU the dust detection system aboard the Ulysses spacecraft showed an increase in detection rate for particles with masses greater than 5 x 10(-13) g. The spacecraft meteoroid g. encounter geometry indicates highly eccentric orbits detected near aphelion. The outer Limit of the enhanced flux is imposed as meteoroids on such orbits move outside the aperture of the dust detector. The inner edge of the enhanced flux would be consistent with the aphelion distance acquired by 50-200 mu m particles evolving for 10-20 kyr under Poynting-Robertson drag from an Encke type orbit. We propose such meteoroids provide a source population from which collisional fragmentation produces-particles in the mass range to which the Ulysses detector is sensitive. Daughter fragments produced away from the aphelia of the parent orbits, a similar to 2.2 AU, e similar to 0.85, enter hyperbolic orbits which are not evident in the Ulysses data. The spatial density of fragments from collisions very near aphelion drops off rapidly as they evolve inward under Poynting-Robertson drag while collisions closer to 3.4 AU leave the subsequent peak density outside that radius for a significant fraction of the fragment's subsequent lifetime. The rapid orbital evolution for these collision fragments implies a recent breakup and probably a large reservoir of parent meteoroids.

Item Type: Article
DOI/Identification number: 10.1016/0273-1177(95)00776-B
Subjects: Q Science > QC Physics
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: I.T. Ekpo
Date Deposited: 25 Oct 2009 10:26 UTC
Last Modified: 16 Nov 2021 09:57 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/19088 (The current URI for this page, for reference purposes)

University of Kent Author Information

McDonnell, J.A.M..

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