Gravitational loss-cone instability in stellar clusters around massive black holes

Details Gravitational loss-cone instability in stellar clusters around massive black holes Gravitational loss-cone instability in stellar clusters around massive black holes

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..245..255p&link_type=abstract

Formation and Evolution of Galaxy Bulges, Proceedings of the International Astronomical Union, IAU Symposium, Volume 245, p. 255

Astronomy and Astrophysics

Astronomy

Galaxy: Center, Galaxies: Nuclei

Scientific paper

Stability of spherical and thin disk stellar clusters surrounding massive black holes are studied. Due to the black hole, stars with sufficiently low angular momenta escape from the system through the loss cone. We show that stability of spherical clusters crucially depend on whether the distribution of stars is monotonic or non-monotonic in angular momentum. It turns out that only non-monotonic distributions can be unstable. At the same time the instability in disk clusters is possible for both types of distributions.

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