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Unformatted text preview: r that you are computing ΔTd(t), and hence in addition to considering the discrete photon absorptions you must subtract off the mean energy input.] (d)
Evaluate the variance of your result from (c). What is σ(Td)/Td,eq? Express this in terms of β, EUV, and the equilibrium energy content of the grain Ueq. (e)
Numerically evaluate (d), to an order of magnitude, for a = 0.2 μm silicate grains in the diffuse ISM. #2. Interplanetary Dust. [14 points] Consider a silicate dust grain of radius a = 2 μm in the solar system. Make any approximations necessary to compl...
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This document was uploaded on 03/08/2014 for the course AY 102 at Caltech.
 Winter '08
 Sargent,A

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