Massive black-hole binary inspirals: results from the LISA parameter estimation taskforce

被引:91
作者
Arun, K. G. [1 ,2 ]
Babak, Stas [3 ]
Berti, Emanuele [4 ,5 ]
Cornish, Neil [6 ]
Cutler, Curt [4 ,7 ]
Gair, Jonathan [8 ]
Hughes, Scott A. [9 ,10 ]
Iyer, Bala R. [11 ]
Lang, Ryan N. [9 ,10 ]
Mandel, Ilya [12 ]
Porter, Edward K. [3 ,13 ]
Sathyaprakash, Bangalore S. [14 ]
Sinha, Siddhartha [11 ,15 ]
Sintes, Alicia M. [3 ,16 ]
Trias, Miquel [16 ]
Van Den Broeck, Chris [14 ]
Volonteri, Marta [17 ]
机构
[1] Univ Paris Sud, LAL, CNRS, IN2P3, Orsay, France
[2] Univ Paris 06, Inst Astrophys Paris, UMR 7095, CNRS, F-75014 Paris, France
[3] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Golm, Germany
[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[5] Univ Mississippi, Dept Phys & Astron, University, MS 38677 USA
[6] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA
[7] CALTECH, Pasadena, CA 91125 USA
[8] Univ Cambridge, Inst Astron, Cambridge CB30HA, England
[9] MIT, Dept Phys, Cambridge, MA 02139 USA
[10] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA
[11] Raman Res Inst, Bangalore 560080, Karnataka, India
[12] Northwestern Univ, Dept Phys & Astron, Evanston, IL USA
[13] APC, F-75205 Paris 13, France
[14] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3YB, S Glam, Wales
[15] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
[16] Univ Illes Balears, Dept Fis, E-07122 Palma de Mallorca, Spain
[17] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
基金
英国科学技术设施理事会;
关键词
GRAVITATIONAL WAVE-FORMS; HIERARCHICAL-MODELS; EVOLUTION; COLLAPSE; SYSTEMS; HISTORY; MERGERS; RATES;
D O I
10.1088/0264-9381/26/9/094027
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The LISA Parameter Estimation Taskforce was formed in September 2007 to provide the LISA Project with vetted codes, source distribution models and results related to parameter estimation. The Taskforce's goal is to be able to quickly calculate the impact of any mission design changes on LISA's science capabilities, based on reasonable estimates of the distribution of astrophysical sources in the universe. This paper describes our Taskforce's work on massive black-hole binaries (MBHBs). Given present uncertainties in the formation history of MBHBs, we adopt four different population models, based on (i) whether the initial black-hole seeds are small or large and (ii) whether accretion is efficient or inefficient at spinning up the holes. We compare four largely independent codes for calculating LISA's parameter-estimation capabilities. All codes are based on the Fisher-matrix approximation, but in the past they used somewhat different signal models, source parametrizations and noise curves. We show that once these differences are removed, the four codes give results in extremely close agreement with each other. Using a code that includes both spin precession and higher harmonics in the gravitational-wave signal, we carry out Monte Carlo simulations and determine the number of events that can be detected and accurately localized in our four population models.
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页数:14
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