Capture of compact objects by supermassive black holes

Details Capture of compact objects by supermassive black holes Capture of compact objects by supermassive black holes

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jphcs..66a2051f&link_type=abstract

Journal of Physics: Conference Series, Volume 66, Issue 1, pp. 012051 (2007).

Physics

Scientific paper

Capture rates of compact objects were calculated using a recent solution of the Fokker-Planck equation in energy-space, including two-body resonant effects. The present study indicates that capture rates scale as propto Mbh-1.048 consequence of the fact that dwarf galaxies have central regions denser than luminous objects. If the mass distribution of supermassive black holes has a lower cutoff at ~1.4 × 106 Modot (corresponding to the lowest supermassive black hole mass), then 9 inspiral events are expected to be seen by LISA (7 8 corresponding to white dwarf captures and 1 2 to neutron star or stellar black hole captures) after 1 yr of operation. However, if the mass distribution extends down to ~2 × 105Modot, then the number of expected events increases up to 579 (corresponding to ~274 stellar black hole captures, ~194 neutron star captures and ~111 white dwarf captures).

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