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Constraining modified gravitational theories by weak lensing with Euclid

Martinelli, Matteo, Calabrese, Erminia, De Bernardis, Francesco, Melchiorri, Alessandro, Pagano, Luca and Scaramella, Roberto 2011. Constraining modified gravitational theories by weak lensing with Euclid. Physical Review D 83 (2) , 023012. 10.1103/PhysRevD.83.023012

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Future proposed satellite missions such as Euclid can offer the opportunity to test general relativity on cosmic scales through mapping of the galaxy weak-lensing signal. In this paper we forecast the ability of these experiments to constrain modified gravity scenarios such as those predicted by scalar-tensor and f(R) theories. We find that Euclid will improve constraints expected from the Planck satellite on these modified theories of gravity by 2 orders of magnitude. We discuss parameter degeneracies and the possible biases introduced by modifications to gravity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Physical Society
ISSN: 1550-7998
Date of First Compliant Deposit: 10 October 2017
Date of Acceptance: 21 December 2010
Last Modified: 11 Oct 2017 12:27

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