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Combining Probes

Published online by Cambridge University Press:  01 July 2015

Anaïs Rassat ,
François Lanusse ,
Donnacha Kirk ,
Ole Host  and
Sarah Bridle
Anaïs Rassat
Affiliation:
Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL) email: anais.rassat@epfl.ch
François Lanusse
Affiliation:
Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL) email: anais.rassat@epfl.ch
Donnacha Kirk
Affiliation:
Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL) email: anais.rassat@epfl.ch
Ole Host
Affiliation:
Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL) email: anais.rassat@epfl.ch
Sarah Bridle
Affiliation:
Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL) email: anais.rassat@epfl.ch
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Abstract

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With the advent of wide-field surveys, cosmology has entered a new golden age of data where our cosmological model and the nature of dark universe will be tested with unprecedented accuracy, so that we can strive for high precision cosmology. Observational probes like weak lensing, galaxy surveys and the cosmic microwave background as well as other observations will all contribute to these advances. These different probes trace the underlying expansion history and growth of structure in complementary ways and can be combined in order to extract cosmological parameters as best as possible. With future wide-field surveys, observational overlap means these will trace the same physical underlying dark matter distribution, and extra care must be taken when combining information from different probes. Consideration of probe combination is a fundamental aspect of cosmostatistics and important to ensure optimal use of future wide-field surveys.

Keywords

cosmologymethods: statistics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S306: Statistical Challenges in 21st Century Cosmology , May 2014 , pp. 192 - 201
Copyright
Copyright © International Astronomical Union 2015 

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