e/Papaloizou–Pringle instability

Information
has gloss	eng: The Papaloizou-Pringle Instability (PPI) is a scientific discovery made in 1984 by theoretical physicist John Papaloizou and James E. Pringle which proposes that tori, or accretion disks, in anisotropic stellar systems with constant specific angular momentum are unstable to non-axisymmetric global modes.
lexicalization	eng: Papaloizou-Pringle instability
lexicalization	eng: Papaloizou–Pringle instability
instance of	c/Astrophysics theories