From some of what seem to be the matlab docs > The jet colormap is associated with an astrophysical fluid jet simulation from the National Center for Supercomp

From some of what seem to be the matlab docs > The jet colormap is associated with an astrophysical fluid jet simulation from the National Center for Supercomputer Applications. See the "Examples" section http://matlab.izmiran.ru/help/techdoc/ref/colormap.html http://matlab.izmiran.ru/help/techdoc/ref/colormap.html