Unmodelled clustering methods for gravitational wave populations of compact binary mergers
Unmodelled clustering methods for gravitational wave populations of compact binary mergers
复制标题
紧凑双星并合引力波群的未建模聚类方法
DOI:
10.1093/mnras/stz1938
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发表时间:
2019
影响因子:
4.8
通讯作者:
P. Tiňo
中科院分区:
文献类型:
--
作者:
J. Powell;S. Stevenson;I. Mandel;P. Tiňo
The mass and spin distributions of compact binary gravitational-wave sources are currently uncertain due to complicated astrophysics involved in their formation. Multiple sub-populations of compact binaries representing different evolutionary scenarios may be present amongst sources detected by Advanced LIGO and Advanced Virgo. In addition to hierarchical modelling, unmodelled methods can aid in determining the number of sub-populations and their properties. In this paper, we apply Gaussian mixture model clustering to 1000 simulated gravitational-wave compact binary sources from a mixture of five sub-populations. Using both mass and spin as input parameters, we determine how many binary detections are needed to accurately determine the number of sub-populations and their mass and spin distributions. In the most difficult case that we consider, where two sub-populations have identical mass distributions but differ in their spin, which is poorly constrained by gravitational-wave detections, we find that ∼400 detections are needed before we can identify the correct number of sub-populations.
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DOI:
10.3847/2041-8213/aa9bf6
发表时间:
2017-09
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
M. Fishbach;D. Holz
通讯作者:
M. Fishbach;D. Holz
DOI:
10.3847/2041-8213/aaf97b
发表时间:
2018-10
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
Y. Qin;P. Marchant;T. Fragos;G. Meynet;V. Kalogera
通讯作者:
Y. Qin;P. Marchant;T. Fragos;G. Meynet;V. Kalogera
影响因子:
8.6
作者:
Ajith, P.;Hannam, M.;Seiler, J.
通讯作者:
Seiler, J.
影响因子:
7.9
作者:
Farr, Ben;Holz, Daniel E.;Farr, Will M.
通讯作者:
Farr, Will M.
影响因子:
8.6
作者:
Abbott, B. P.;Abbott, R.;Zweizig, J.
通讯作者:
Zweizig, J.