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Jets of Fragments from Catastrophic Break-up and their Astrophysical Implications

Published online by Cambridge University Press:  12 April 2016

G. Martelli ,
P. Rothwell ,
P.N. Smith ,
I. Giblin ,
J. Martinsson ,
E. Ducrocq ,
M. Wettstein ,
M. Di Martino  and
P. Farinella
G. Martelli
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
P. Rothwell
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
P.N. Smith
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
I. Giblin
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
J. Martinsson
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
E. Ducrocq
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
M. Wettstein
Affiliation:
School of Mathematical and Physical Sciences, University of Sussex BrightonBNI 9QH SussexU.K.
M. Di Martino
Affiliation:
Osservatorio Astronomico di Tortio I-10025 Pino TorineseItaly
P. Farinella
Affiliation:
Dipartimento di Matematica, Università di Pisa via Buonarroti, 2 I-56127 Pisa, Italy

Abstract

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We present some preliminary results of a series of catastrophic break-up experiments carried out in the open, against targets of natural and artificial rock, with and without a harder core. These experiments were aimed at investigating the outcomes of hypervelocity impact disruption phenomena, designed to understand the influence of large-scale collisions on the evolution of asteroids and other small solar system bodies. For the first time in this kind of experiments, evidence was found of collimated jets, i.e. the ejection of a statistically significant number of fragments all closely aligned about some preferential planes. Moreover, the presence of some groups of fragments lying close to each other on the ground was also detected.

Type
Circumplanetary Dust: Collisional and Electrostatic Processes
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 383 - 386
Copyright
Copyright © Kluwer 1991

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