Dust Destruction by Strong Shocks

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Dust processing and destruction by shocks is an essential part of the lifecycle of grains in the interstellar medium (ISM). Grains are destroyed both by interactions with the gas and by grain-grain collisions. A number of properties of the grains, including their composition, charge and the size distribution can affect the extent to which they are destroyed. While much progress has been made in the calculation of grain destruction, many uncertainties remain. New Spitzer observations of dust emission coupled with X-ray and UV observations that help determine the shock properties should help put better constraints on the efficiency of dust destruction processes. I discuss the state-of-the-art in calculations of dust destruction in shocks and directions for further progress in this area.

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