ISM-induced erosion and gas-dynamical drag in the Oort Cloud

Details ISM-induced erosion and gas-dynamical drag in the Oort Cloud ISM-induced erosion and gas-dynamical drag in the Oort Cloud

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...84..447s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 84, April 1990, p. 447-466.

Physics

26

Drag, Erosion, Gas Dynamics, Interstellar Matter, Oort Cloud, Comets, Impact Strength, Solar System, Sputtering, Stellar Winds, Supernova Remnants, Comets, Oort Cloud, Erosion, Drag, Models, Sputtering, Interaction, Grains, Impacts, Parameters, Roughness, Mechanical Processes, Gases, Particles, Ejection, Surface, Accretion, Calculations, Debris, Dust, Time Dependency

Scientific paper

The model presently used to examine the physical interactions between the ISM and the Oort Cloud can account for sputtering, sticking, and grain-impact erosion, as well as gas drag, by envisioning the ISM as a multiphase medium with distinct atomic and molecular cloud-phase regimes and coronal and warm/ambient gas-phase regimes. Erosion, which reduces the effectiveness of the thermal and radiation-damage processes acting on cometary surfaces in the Oort cloud, is found to be the dominant ISM interaction; ISM drag effects were found to efficiently remove submicron particles from the Cloud.

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