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dc.contributor.author
Killedar, M.
dc.contributor.author
Borgani, S.
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Fabjan, D.
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Dolag, K.
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Granato, Gian Luigi
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Meneghetti, M.
dc.contributor.author
Planelles, S.
dc.contributor.author
Ragone Figueroa, Cinthia Judith
dc.date.available
2019-10-23T16:52:03Z
dc.date.issued
2018-01
dc.identifier.citation
Killedar, M.; Borgani, S.; Fabjan, D.; Dolag, K.; Granato, Gian Luigi; et al.; Simulation-based marginal likelihood for cluster strong lensing cosmology; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 473; 2; 1-2018; 1736-1750
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/87088
dc.description.abstract
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 amarginal 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 selected z > 0.5 Massive Cluster Survey clusters as a case in point and employing both N-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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GRAVITATIONAL LENSING: STRONG
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METHODS: NUMERICAL
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METHODS: STATISTICAL
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GALAXIES: CLUSTERS: GENERAL
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COSMOLOGY: THEORY
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Simulation-based marginal likelihood for cluster strong lensing cosmology
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-17T15:19:38Z
dc.identifier.eissn
1365-2966
dc.journal.volume
473
dc.journal.number
2
dc.journal.pagination
1736-1750
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Killedar, M.. Università degli Studi di Trieste; Italia. Ludwig Maximilians Universitat; Alemania. The University of Sydney; Australia
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Fil: Borgani, S.. Università degli Studi di Trieste; Italia. Osservatorio Astronomico di Trieste; Italia
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Fil: Fabjan, D.. Istituto Nazionale Di Astrofisica Trieste; Italia. University of Ljubljana; Eslovenia
dc.description.fil
Fil: Dolag, K.. Universitats-sternwarte Munchen; Alemania
dc.description.fil
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia
dc.description.fil
Fil: Meneghetti, M.. Istituto Nazionale di Astrofisica; Italia
dc.description.fil
Fil: Planelles, S.. Istituto Nazionale di Astrofisica; Italia. Universidad de Valencia; España
dc.description.fil
Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://academic.oup.com/mnras/article/473/2/1736/4111158
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stx2262
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