= Simon White
{c}
{wiki}
= Simon D. M. White
{c}
{synonym}
<Simon White> studies the formation of <galaxies> and cosmic structure. With <Martin Rees>, he proposed a two-stage account in which extended dark haloes assemble gravitationally and luminous <galaxies> form through cooling and concentration of <gas> within them.
The key distinction is dissipative: <gas> can radiate away <energy>, whereas collisionless halo material does not cool in the same way. The cooling requirement helps determine which dark structures can host concentrated luminous systems. Their 1978 model thereby connected the dark gravitational framework to the observed scale of <galaxies>.<Core condensation in heavy halos by Simon D. M. White and Martin J. Rees>[Abstract: hierarchical dark clustering and formation of luminous cores through dissipative cooling]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Simon_White_at_RAS_NAM_2012_2.jpg?width=260]
{title=Portrait of <Simon White>}
{description=Photograph by Mike Peel (www.mikepeel.net). https://creativecommons.org/licenses/by-sa/4.0/[CC BY-SA 4.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Simon_White_at_RAS_NAM_2012_2.jpg}
{width=260}
Back to article page
