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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. Early version:

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

Newer studies/analysis have adjusted the factor and exponent.


(relation,galaxies,black holes)
Further reading:
http://en.wikipedia.org/wiki/M-sigma_relation

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