Fulltext

Information Gains in Cosmological Parameter Estimation

Seehars, Sebastian ; Amara, Adam ; Refregier, Alexandre ; Paranjape, Aseem ; Akeret, Joël

In: Proceedings of the International Astronomical Union, 2014, vol. 10, no. S306, p. 206-209

Zum persönliche Liste hinzufügen
    Titel
    • Information Gains in Cosmological Parameter Estimation
    Autor
    • Seehars, Sebastian. ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
    • Amara, Adam. ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
    • Refregier, Alexandre. ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
    • Paranjape, Aseem. ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
    • Akeret, Joël. ETH Zurich, Department of Physics, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Proceedings of the International Astronomical Union, 2014, vol. 10, no. S306, p. 206-209. Cambridge University Press
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:303970
    Summary
    Combining datasets from different experiments and probes to constrain cosmological models is an important challenge in observational cosmology. We summarize a framework for measuring the constraining power and the consistency of separately or jointly analyzed data within a given model that we proposed in earlier work (Seehars et al. 2014). Applying the Kullback-Leibler divergence to posterior distributions, we can quantify the difference between constraints and distinguish contributions from gains in precision and shifts in parameter space. We show results from applying this technique to a combination of datasets and probes such as the cosmic microwave background or baryon acoustic oscillations