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Correlated supernova systematics and ground based surveys

Title
Correlated supernova systematics and ground based surveys
Authors
Kim A.G.Linder E.V.
Ewha Authors
Eric V. Linder
Issue Date
2011
Journal Title
Journal of Cosmology and Astroparticle Physics
ISSN
1475-7516JCR Link
Citation
vol. 2011, no. 6
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Supernova distances provide a direct probe of cosmic acceleration, constraining dark energy. This leverage increases with survey redshift depth at a rate bounded by the systematic uncertainties. We investigate the impact of a wavelength-dependent, global correlation model of systematics in comparison to the standard local-redshift correlation model. This can arise from subclass uncertainties as features in the supernova spectrum redshift out of the observer photometric filters or spectral range. We explore the impact of such a systematic on ground-based supernova surveys such as Dark Energy Survey and LSST, finding distinctive implications. Extending the wavelength sensitivity to 1.05 μm through ''extreme red'' CCDs can improve the dark energy figure of merit by up to a factor 2. © 2011 IOP Publishing Ltd and SISSA.
DOI
10.1088/1475-7516/2011/06/020
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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