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Robustness to systematics for future dark energy probes
File(s)
1101.1521v2.pdf (371.14 KB)
Accepted version
Author(s)
March, MC
Trotta, R
Amendola, L
Huterer, D
Type
Journal Article
Abstract
We extend the figure of merit formalism usually adopted to quantify the statistical performance of future dark energy probes to assess the robustness of a future mission to plausible systematic bias. We introduce a new robustness figure of merit which can be computed in the Fisher matrix formalism given arbitrary systematic biases in the observable quantities. We argue that robustness to systematics is an important new quantity that should be taken into account when optimizing future surveys. We illustrate our formalism with toy examples, and apply it to future Type Ia supernova (SN Ia) and baryonic acoustic oscillation (BAO) surveys. For the simplified systematic biases that we consider, we find that SNe Ia are a somewhat more robust probe of dark energy parameters than the BAO. We trace this back to a geometrical alignment of systematic bias direction with statistical degeneracy directions in the dark energy parameter space.
Date Issued
2011-07-01
Date Acceptance
2011-03-08
Citation
Monthly Notices of the Royal Astronomical Society, 2011, 415 (1), pp.143-152
URI
DOI
ISSN
1365-2966
Publisher
Oxford University Press (OUP)
Start Page
143
End Page
152
Journal / Book Title
Monthly Notices of the Royal Astronomical Society
Volume
415
Issue
1
Copyright Statement
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Marisa C. March, Roberto Trotta, Luca Amendola, and Dragan Huterer
Robustness to systematics for future dark energy probes
MNRAS (2011) Vol. 415 143-152 is available online at: https://dx.doi.org/10.1111/j.1365-2966.2011.18679.x
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
ASTRONOMY & ASTROPHYSICS
methods: statistical
cosmology: cosmological parameters
BARYON ACOUSTIC-OSCILLATIONS
HUBBLE-SPACE-TELESCOPE
COSMOLOGICAL PARAMETERS
REDSHIFT SURVEYS
MATTER
SCALE
SKY
Publication Status
Published