Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.4302d&link_type=abstract
American Astronomical Society Meeting 208, #43.02; Bulletin of the American Astronomical Society, Vol. 38, p.117
Astronomy and Astrophysics
Astrophysics
Scientific paper
Dusty X-ray emitting plasmas are a singular astrophysical environment in which the energetics and evolution of the dust are dominated by the collisional interactions with the ambient gas. In additional to the usual information on the abundance, composition and size distribution of the dust, the infrared spectrum of a dusty plasma provides unique information on the physical conditions of the gas: its density, the temperature of its constituent electrons and ions, and its cooling rate by gas-grain collisions. Collisions between the dust grains and the ions also erode the dust via thermal and kinetic sputtering, releasing refractory elements previously locked in the solids, back to the gas phase of the interstellar medium. In this talk I will briefly review the basic physical interactions between the dust and gas with an application to the shocked X-ray emitting medium around SN1987a.
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