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Geometric Thickness ○｜Definition｜1st｜20260913160020-00-⌔

Geometrical thickness - Wikipedia

Geometrical thickness

In accretion disk physics, geometrical thickness is a property of an accretion disk representing the relative vertical scale height (thickness) of the disk. Disks can be categorized as geometrically thin, slim, or thick. Thicker disks have higher mass accretion rates than thinner ones, as radiation pressure increases with the mass accretion rate, expanding the disk vertically.1

Printed 2026-09-13.

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Footnotes

  1. Feng, Junjie; Cao, Xinwu; Gu, Wei-Min; Ma, Ren-Yi (2019). “A Global Solution to a Slim Accretion Disk with Radiation-driven Outflows”. The Astrophysical Journal. 885: 93. arXiv:1909.07559. doi:10.3847/1538-4357/ab4592. ↩

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