Astrophysics (Index)About

M-sigma relation

(M-σ relation)
(relation between galaxy center's velocity dispersion and SMBH mass)

The M-sigma relation (M-σ relation) is a relation between the velocity dispersion of stars in the center of a galaxy and the mass of the central supermassive black hole (SMBH). It has been used as a means of determining the SMBH mass. Early version: 

  M             σ
————— ≈ 3.1(——————————)4
108M☉       200 km s-1

Newer studies and analysis have adjusted the constant factor and exponent.

(relation,galaxies,black holes)
Further reading:
https://en.wikipedia.org/wiki/M-sigma_relation
https://ui.adsabs.harvard.edu/abs/2000ApJ...539L...9F/abstract
https://ui.adsabs.harvard.edu/abs/2000ApJ...539L..13G/abstract
http://ned.ipac.caltech.edu/level5/March01/Merritt3/Merritt_contents.html
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