Triplets of supermassive black holes: astrophysics, gravitational waves and detection

被引:63
作者
Amaro-Seoane, Pau [1 ,2 ]
Sesana, Alberto [3 ]
Hoffman, Loren [4 ]
Benacquista, Matthew [5 ]
Eichhorn, Christoph [6 ,7 ]
Makino, Junichiro [8 ]
Spurzem, Rainer [7 ,9 ,10 ]
机构
[1] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-14476 Potsdam, Germany
[2] CSIC IEEC, Inst Ciencies Espai, ES-08193 Barcelona, Spain
[3] Penn State Univ, Davey Lab 104, University Pk, PA 16802 USA
[4] Northwestern Univ, Dearborn Observ, Evanston, IL 60208 USA
[5] Univ Texas Brownsville, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA
[6] Univ Stuttgart, Inst Raumfahrtsyst, D-70550 Stuttgart, Germany
[7] Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China
[8] Natl Astron Observ, Div Theoret Astron, Tokyo 1818588, Japan
[9] Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China
[10] Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, D-69120 Heidelberg, Germany
基金
美国国家科学基金会;
关键词
gravitational waves; pulsars: general; cosmology: theory; VELOCITY DISPERSION; GALAXY FORMATION; BINARY-SYSTEMS; EVOLUTION; MASS; DYNAMICS; LISA; PREDICTIONS; CLUSTERS; MODELS;
D O I
10.1111/j.1365-2966.2009.16104.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Supermassive black holes (SMBHs) found in the centres of many galaxies are understood to play a fundamental, active role in the cosmological structure formation process. In hierarchical formation scenarios, SMBHs are expected to form binaries following the merger of their host galaxies. If these binaries do not coalesce before the merger with a third galaxy, the formation of a black hole triple system is possible. Numerical simulations of the dynamics of triples within galaxy cores exhibit phases of very high eccentricity (as high as e similar to 0.99). During these phases, intense bursts of gravitational radiation can be emitted at orbital periapsis, which produces a gravitational wave signal at frequencies substantially higher than the orbital frequency. The likelihood of detection of these bursts with pulsar timing and the Laser Interferometer Space Antenna (LISA) is estimated using several population models of SMBHs with masses greater than or similar to 10(7) M-circle dot. Assuming that 10 per cent or more of binaries are in triple systems, we find that up to a few dozen of these bursts will produce residuals > 1 ns, within the sensitivity range of forthcoming pulsar timing arrays. However, most of such bursts will be washed out in the underlying confusion noise produced by all the other 'standard' SMBH binaries emitting in the same frequency window. A detailed data analysis study would be required to assess resolvability of such sources. Implementing a basic resolvability criterion, we find that the chance of catching a resolvable burst at a 1 ns precision level is 2-50 per cent, depending on the adopted SMBH evolution model. On the other hand, the probability of detecting bursts produced by massive binaries (masses greater than or similar to 10(7) M-circle dot) with LISA is negligible.
引用
收藏
页码:2308 / 2320
页数:13
相关论文
共 64 条
[1]   Black hole binary dynamics [J].
Aarseth, SJ .
ASTROPHYSICS AND SPACE SCIENCE, 2003, 285 (02) :367-372
[2]   From NBODY1 to NBODY6: The growth of an industry [J].
Aarseth, SJ .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1999, 111 (765) :1333-1346
[3]   The loss-cone problem in dense nuclei [J].
Amaro-Seoane, P ;
Spurzem, R .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 327 (03) :995-1003
[4]   Intermediate and extreme mass-ratio inspirals - astrophysics, science applications and detection using LISA [J].
Amaro-Seoane, Pau ;
Gair, Jonathan R. ;
Freitag, Marc ;
Miller, M. Coleman ;
Mandel, Ilya ;
Cutler, Curt J. ;
Babak, Stanislav .
CLASSICAL AND QUANTUM GRAVITY, 2007, 24 (17) :R113-R169
[5]   Intermediate-mass black holes in colliding clusters: Implications for lower frequency gravitational-wave astronomy [J].
Amaro-Seoane, Pau ;
Freitag, Marc .
ASTROPHYSICAL JOURNAL, 2006, 653 (01) :L53-L56
[6]   GRAVITATIONAL WAVES FROM ECCENTRIC INTERMEDIATE-MASS BLACK HOLE BINARIES [J].
Amaro-Seoane, Pau ;
Miller, M. Coleman ;
Freitag, Marc .
ASTROPHYSICAL JOURNAL LETTERS, 2009, 692 (01) :L50-L53
[7]  
AMAROSEOANE P, 2009, APJ UNPUB
[8]  
[Anonymous], 1987, 300 YEARS GRAVITATIO, DOI DOI 10.3847/1538-4357/AAC385
[9]  
[Anonymous], 2003, Gravitational N-Body Simulations
[10]  
[Anonymous], LISA LASER INTERFERO