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Salpeter timescale

(Salpeter time)
(timescale for black hole growth)

The Salpeter timescale (or Salpeter time) is the timescale for black hole growth, based upon the Eddington limit. A growing black hole heats its accreting material, which glows, and at some level of accretion, the resulting luminosity's radiation pressure would fully counteract the accretion, resulting in a limit on the possible accretion rate. The timescale is 5×107 years, i.e., the limitation imposed by Eddington luminosity suggests a black hole will grow to no more than a factor of e in that many years.


(physics,timescale,black holes,limit)
Further reading:
http://academic.sun.ac.za/somerskool/2006/documents/lecture_notes/king/king_lectures.pdf
https://ui.adsabs.harvard.edu/abs/1964ApJ...140..796S/abstract

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