Can bars mimic Massive Black Holes?

Details Can bars mimic Massive Black Holes? Can bars mimic Massive Black Holes?

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.0704s&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #07.04; Bulletin of the American Astronomical Society, Vol. 31, p.1378

Astronomy and Astrophysics

Astronomy

Scientific paper

The case for Massive Black Holes (MBHs) at the center of galaxies has become strong in recent years, but is of necessity model dependent. The most general dynamical models use three integrals of motion, allowing triaxial symmetry, but are cumbersome to construct. Models limited to spherical symmetry, i.e. with a two integral distribution function f(E,L2), are much more tractable, and are usually employed as a first step in gauging the mass of a suspected MBH. It has been suggested that the high streaming motions of a bar, seen end-on, can mimic the kinematic signature of a MBH. We investigate this proposition using fully self-consistent numerical simulations of barred galaxies, both with and without a central mass. Our analysis, which assumes spherical symmetry, is done using a variation of the Schwarzschild method. We present the estimate of the central mass as a function of viewing angle of the bar.

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