The Eddington luminosity or Eddington limit is the luminosity at which radiation pressure overcomes the force of gravity, making it possible for luminous objects to blow themselves apart.
Eddington Luminosity - The maximum luminosity that a body could emit without driving away surrounding material ...
Limits on compactness from the observation of accretion-driven phenomena ("Eddington luminosity") observations of stellar dynamics in the center of our own Milky Way galaxy, ...
The reason for this limit is not precisely known, but it is partially due to the Eddington luminosity which defines the maximum amount of luminosity that can pass through the atmosphere of a star without ejecting the gases into space.
This may indicate that these objects have simultaneously lower central masses and higher accretion rates relative to the Eddington luminosity than more usual Seyferts (the combination being likely from observational selection effects), ...
This is called the Eddington luminosity, and is 4 × 104 in units of solar luminosities per solar mass. From this argument we infer that the central engines of active galaxies must have a mass at least ~ 106(L / 1044 erg s-1) M.
 See also: Luminosity, Galaxy, Photon, Ray, Mass
  
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