Linked from
The 20 pages that link to Eddington luminosity, each with the reason it gives.
QuasarRelated: It helps explain how a quasar’s brightness constrains its black hole’s growth.
Stellar massRelated: It helps limit how luminous and massive a stable star can become.
X-ray binaryRelated: It provides a benchmark for interpreting how brightly an X-ray binary accretes.
Blue supergiantRelated: It helps explain why the most luminous stars lose mass so forcefully.
HypergiantRelated: Approaching this limit helps explain why hypergiants shed matter so rapidly.