Evolution of Galactic Nuclei. I. orbital evolution of IMBH
arXiv:astro-ph/0511782 · doi:10.1086/510344
Abstract
Resent observations and theoretical interpretations suggest that IMBHs (intermediate-mass black hole) are formed in the centers of young and compact star clusters born close to the center of their parent galaxy. Such a star cluster would sink toward the center of the galaxy, and at the same time stars are stripped out of the cluster by the tidal field of the parent galaxy. We investigated the orbital evolution of the IMBH, after its parent cluster is completely disrupted by the tidal field of the parent galaxy, by means of large-scale N-body simulations. We constructed a model of the central region of our galaxy, with an SMBH (supermassive black hole) and Bahcall-Wolf stellar cusp, and placed an IMBH in a circular orbit of radius 0.086pc. The IMBH sinks toward the SMBH through dynamical friction, but dynamical friction becomes ineffective when the IMBH reached the radius inside which the initial stellar mass is comparable to the IMBH mass. This is because the IMBH kicks out the stars. This behavior is essentially the same as the loss-cone depletion observed in simulations of massive SMBH binaries. After the evolution through dynamical friction stalled, the eccentricity of the orbit of the IMBH goes up, resulting in the strong reduction in the merging timescale through gravitational wave radiation. Our result indicates that the IMBHs formed close to the galactic center can merge with the central SMBH in short time. The number of merging events detectable with DECIGO is estimated to be around 50 per year. Event rate for LISA would be similar or less, depending on the growth mode of IMBHs.
12 pages, 24 figures, submitted to ApJ
References in corpus (37)
- Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
- The formation of massive black holes through collision runaway in dense young star clusters
- Formation of Galactic Nuclei
- Measuring gravitational waves from binary black hole coalescences: I. Signal to noise for inspiral, merger, and ringdown
- Production of Intermediate-Mass Black Holes in Globular Clusters
- Stellar Dynamics in the Galactic centre: Proper Motions and Anisotropy
- Formation of Massive Black Holes in Dense Star Clusters. I. Mass Segregation and Core Collapse
- A Family of Models for Spherical Stellar Systems
- Missing Link Found? --- The ``runaway'' path to supermassive black holes
- Long Term Evolution of Massive Black Hole Binaries
- Efficient Merger of Binary Supermassive Black Holes in Non-Axisymmetric Galaxies
- Runaway collisions in young star clusters. II. Numerical results
- The dynamical evolution of massive black hole binaries - II. Self-consistent N-body integrations
- Discovery of a Luminous, Variable, Off-Center Source in the Nucleus of M82 with the Chandra HRC
- GRAPE-6: The massively-parallel special-purpose computer for astrophysical particle simulation
- The need for a second black hole at the Galactic center
- Low-frequency gravitational waves from supermassive black holes
- Kinematic Masses of Super Star Clusters in M82 from High-Resolution Near-Infrared Spectroscopy
- The ecology of star clusters and intermediate mass black holes in the Galactic bulge
- The lives and deaths of star clusters near the Galactic center
- The nature of the Galactic Center source IRS 13 revealed by high spatial resolution in the infrared
- To Circularize or Not to Circularize? -- Orbital Evolution of Satellite Galaxies
- Evolution of Massive Black Hole Binaries
- Long-Term Evolution of Massive Black Hole Binaries. II. Binary Evolution in Low-Density Galaxies
- GRAPE-6A: A single-card GRAPE-6 for parallel PC-GRAPE cluster system
- Runaway collisions in young star clusters. I. Methods and tests
- Merging of galaxies with central black holes II. Evolution of the black hole binary and the structure of the core
- Dynamical Friction of Galactic Center Star Clusters with an Intermediate-Mass Black Hole
- The Disruption of Stellar Clusters Containing Massive Black Holes near the Galactic Center
- Formation of a Massive Black Hole at the Center of the Superbubble in M82
- Evolution of Massive Blackhole Triples I -- Equal-mass binary-single systems
- Probing General Relativity With Mergers of Supermassive and Intermediate-Mass Black Holes
- Formation of intermediate-mass black holes in circumnuclear regions of galaxies
- Chandra X-Ray Imaging of the Interacting Starburst Galaxy System NGC 7714/5: Tidal ULXs, Emergent Wind, and Resolved HII Regions
- Radiation drag driven mass accretion in clumpy interstellar medium: implications for the supermassive black hole-to-bulge relation
- Effects of Wandering on the Coalescence of Black Hole Binaries in Galactic Centers
- Black Hole Binary Dynamics
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