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Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics

Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics

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Superbubble breakout and galactic winds from<br />

disk galaxies<br />

Arpita Roy; Biman B. Nath; Prateek Sharma; Y. Shchekinov<br />

We study the evolution <strong>of</strong> superbubbles driven by large star clusters<br />

in disk galaxies using Kompaneets approximation and numerical<br />

simulations. We investigate the effect <strong>of</strong> radiative losses on the<br />

dynamics <strong>of</strong> superbubbles, in particular the conditions required for<br />

superbubbles to break through the disk material to throw the inner<br />

hot gas into the halo with sufficient speed so as to create a galactic<br />

outow. We nd that our calculations and simulations may explain<br />

the observed threshold star formation surface density required to<br />

create superwinds from disk galaxies.<br />

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