Simulation-based marginal likelihood for cluster strong lensing cosmology
Simulation-based marginal likelihood for cluster strong lensing cosmology
复制标题
基于模拟的星团强透镜宇宙学边际似然
DOI:
10.1093/mnras/stx2262
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Ragone-Figueroa
中科院分区:
文献类型:
--
作者:
Killedar;Borgani;Fabjan;Granato;Meneghetti;Planelles;Ragone-Figueroa
Comparisons between observed and predicted strong lensing properties of galaxy clusters have been routinely used to claim either tension or consistency with Λ cold dark matter cosmology. However, standard approaches to such cosmological tests are unable to quantify the preference for one cosmology over another. We advocate approximating the relevant Bayes factor using a marginal likelihood that is based on the following summary statistic: the posterior probability distribution function for the parameters of the scaling relation between Einstein radii and cluster mass, α and β. We demonstrate, for the first time, a method of estimating the marginal likelihood using the X-ray selectedz> 0.5 Massive Cluster Survey clusters as a case in point and employing bothN-body and hydrodynamic simulations of clusters. We investigate the uncertainty in this estimate and consequential ability to compare competing cosmologies, which arises from incomplete descriptions of baryonic processes, discrepancies in cluster selection criteria, redshift distribution and dynamical state. The relation between triaxial cluster masses at various overdensities provides a promising alternative to the strong lensing test.
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影响因子:
4.8
作者:
H. Mahdi;M. V. Beek;P. Elahi;G. Lewis;C. Power;M. Killedar
通讯作者:
H. Mahdi;M. V. Beek;P. Elahi;G. Lewis;C. Power;M. Killedar
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Jean;Matthias Redlich;M. Meneghetti;M. Bartelmann
通讯作者:
M. Bartelmann
DOI:
10.1088/0004-637x/801/1/44
发表时间:
2015
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Zitrin;A. Fabris;J. Merten;P. Melchior;M. Meneghetti;A. Koekemoer;D. Coe;M. Maturi;M. Bartelmann;M. Postman;K. Umetsu;G. Seidel;I. Sendra;T. Broadhurst;I. Balestra;A. Biviano;C. Grillo;A. Mercurio;M. Nonino;P. Rosati;L. Bradley
通讯作者:
L. Bradley
DOI:
10.1086/157755
发表时间:
1980
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. C. Perrenod
通讯作者:
S. C. Perrenod
影响因子:
3.5
作者:
S. Ho;M. White
通讯作者:
M. White