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Testing the mutual consistency of different supernovae surveys
Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 3
2015 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 449, no 3, 2405-2412 p.Article in journal (Refereed) Published
Abstract [en]

It is now common practice to constrain cosmological parameters using supernovae (SNe) catalogues constructed from several different surveys. Before performing such a joint analysis, however, one should check that parameter constraints derived from the individual SNe surveys that make up the catalogue are mutually consistent. We describe a statistically-robust mutual consistency test, which we calibrate using simulations, and apply it to each pairwise combination of the large surveys making up, respectively, the UNION2 catalogue and the very recent JLA (joint light-curve analysis) compilation by Betoule et al. We find no inconsistencies in the latter case, but conclusive evidence for inconsistency between some survey pairs in the UNION2 catalogue.

Place, publisher, year, edition, pages
2015. Vol. 449, no 3, 2405-2412 p.
Keyword [en]
methods: data analysis, methods: statistical, supernovae: general
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-119069DOI: 10.1093/mnras/stv415ISI: 000355337800016OAI: oai:DiVA.org:su-119069DiVA: diva2:846065
Available from: 2015-08-14 Created: 2015-07-27 Last updated: 2017-12-04Bibliographically approved

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Karpenka, Natalia V.
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