DETECTION OF IMBHs WITH GROUND-BASED GRAVITATIONAL WAVE OBSERVATORIES: A BIOGRAPHY OF A BINARY OF BLACK HOLES, FROM BIRTH TO DEATH
- Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut), D-14476 Potsdam (Germany)
Even though the existence of intermediate-mass black holes (IMBHs; black holes with masses ranging between 10{sup 2} M{sub sun} and 10{sup 4} M{sub sun}) has not yet been corroborated observationally, these objects are of high interest for astrophysics. Our understanding of the formation and evolution of supermassive black holes, as well as galaxy evolution modeling and cosmography would dramatically change if an IMBH were to be observed. From the point of view of traditional photon-based astronomy, which relies on the monitoring of innermost stellar kinematics, the direct detection of an IMBH seems to be rather far in the future. However, the prospect of the detection and characterization of an IMBH has good chances in lower frequency gravitational-wave (GW) astrophysics using ground-based detectors such as the Laser Interferometer Gravitational-Wave Observatory (LIGO), Virgo, and the future Einstein Telescope (ET). We present an analysis of the signal of a system of a binary of IMBHs based on a waveform model obtained with numerical relativity simulations coupled with post-Newtonian calculations at the highest available order. IMBH binaries with total masses between 200 and 20,000 M{sub sun} would produce significant signal-to-noise ratios in Advanced LIGO and Virgo and the ET. We have computed the expected event rate of IMBH binary coalescences for different configurations of the binary, finding interesting values that depend on the spin of the IMBHs. The prospects for IMBH detection and characterization with ground-based GW observatories would not only provide us with a robust test of general relativity, but would also corroborate the existence of these systems. Such detections should allow astrophysicists to probe the stellar environments of IMBHs and their formation processes.
- OSTI ID:
- 21464630
- Journal Information:
- Astrophysical Journal, Vol. 722, Issue 2; Other Information: DOI: 10.1088/0004-637X/722/2/1197; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COSMOLOGY AND ASTRONOMY
ASTRONOMY
ASTROPHYSICS
BLACK HOLES
COALESCENCE
GALACTIC EVOLUTION
GALAXIES
GENERAL RELATIVITY THEORY
GRAVITATIONAL WAVES
INTERFEROMETERS
PHOTONS
SIGNAL-TO-NOISE RATIO
SIMULATION
TELESCOPES
WAVE FORMS
BOSONS
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
EVOLUTION
FIELD THEORIES
MASSLESS PARTICLES
MEASURING INSTRUMENTS
PHYSICS
RELATIVITY THEORY