Clark, B.C.; Green, S. F.; Economou, T.E.; Sandford, S.A.; Zolensky, M.E. and Brownlee, D.E.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1029/2004JE002319|
|Google Scholar:||Look up in Google Scholar|
The unpredicted heterogeneity in particle number density in the coma of Wild 2 is consistent with delayed fragmentation to produce small particles from larger aggregates initially ejected from the cometary nucleus. The resultant heterogeneous inner coma results in stochastic variations in particle number and size distribution. Fragmentation can be accelerated after aggregate release by enhanced heating and one or more additional factors such as abrupt depressurization, phase transitions, exothermic chemical reactions, centrifugal forces, and electrostatic repulsion. Certain predicted characteristics of such in-flight disaggregation in coma particle streams correspond to known cometary phenomena.
|Item Type:||Journal Article|
|Copyright Holders:||2004 by the American Geophysical Union|
|Keywords:||cometary ice analogs; dust coma; Hale-Bopp; detector measurements; interstellar dust; grigg-skjellerup; p/arend-rigaux; inner coma; c/1996 b2; p/wild 2|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Astrid Peterkin|
|Date Deposited:||08 Feb 2007|
|Last Modified:||14 Jan 2016 16:27|
|Share this page:|