= Frank Shu
{c}
{wiki}
= Frank H. Shu
{c}
{synonym}
<Frank Shu> developed a mathematical account of <star formation> through the gravitational collapse of isothermal <gas> spheres. His 1977 treatment used <self-similarity> to describe the flow after a central core had formed, reducing the evolving spatial problem to functions of a scaled coordinate.
In the inside-out collapse solution, an outward-moving expansion wave separates the still-static outer <gas> from an infalling inner region. Near the center the flow approaches <free fall>, and accreting material encounters a radiating <shock wave> at the core. The construction connects the initial cloud structure to the subsequent supply of <mass> to a growing <protostar> under explicit symmetry and <temperature> assumptions.<Self-Similar Collapse of Isothermal Spheres and Star Formation by Frank H. Shu>[pp. 488–489, abstract and similarity formulation; expansion-wave solution]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Frank%20Hsia-San%20Shu%2C%20the%20Fellow%20of%20Academia%20Sinica.JPG?width=250]
{title=Portrait of <Frank Shu>}
{description=SSR2000, own photograph, 19 October 2013. https://creativecommons.org/licenses/by-sa/3.0/[CC BY-SA 3.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Frank_Hsia-San_Shu%2C_the_Fellow_of_Academia_Sinica.JPG}
{width=250}
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