The existence of some sort of instability with regard to prolate configurations has been advocated in an earlier paper (Caimmi 2006) in order to explain the observed lack of elliptical galaxies more elongated than E7. It is recognized that a viable physical process might be the occurrence of bending instabilities, which were fully investigated long time ago, both analytically (Polyachenko and Shukhman 1979) and numerically (Merritt and Hernquist 1991).
Addendum: WHY THERE ARE NO ELLIPTICAL GALAXIES MORE FLATTENED THAN E7. THIRTY YEARS LATER
CAIMMI, ROBERTO
2007
Abstract
The existence of some sort of instability with regard to prolate configurations has been advocated in an earlier paper (Caimmi 2006) in order to explain the observed lack of elliptical galaxies more elongated than E7. It is recognized that a viable physical process might be the occurrence of bending instabilities, which were fully investigated long time ago, both analytically (Polyachenko and Shukhman 1979) and numerically (Merritt and Hernquist 1991).
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