Stellar Kinematics Near the Galactic Center -- Possible Test for a Binary Black Hole

Details Stellar Kinematics Near the Galactic Center -- Possible Test for a Binary Black Hole Stellar Kinematics Near the Galactic Center -- Possible Test for a Binary Black Hole

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aca....50...67j&link_type=abstract

Acta Astronomica, v.50, pp.67-78, (2000).

Physics

2

Black Hole Physics, Galaxy: Center, Astrometry

Scientific paper

We consider consequences of the presence of a binary black hole system in the center of our Galaxy. We show that the existence of such a system with total mass approx 2.6*10^6 M_odot and semimajor axis approx 0.001 pc is not excluded on theoretical grounds and it may have characteristic evolution time of a few billions years. We simulate astrometric measurements of proper motion of stars in the vicinity of the black hole system and check whether such observations are sufficient to discover the binary nature of the central mass. We show that such findings require astrometric accuracy about ten times higher than presently available; the Keck Interferometer, will be able to place stringent observational limits on the presence of a black hole binary in the Galactic center.

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