Weighing the Universe with Photometric Redshift Surveys and the Impact on Dark Energy Forecasts

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dc.creatorKnox, Lloyd
dc.creatorSong, Yong-Seon
dc.creatorZhan, Hu
dc.date2006-05-21
dc.date.accessioned2026-07-07T10:23:08Z
dc.date.available2026-07-07T10:23:08Z
dc.descriptionWith a wariness of Occam's razor awakened by the discovery of cosmic acceleration, we abandon the usual assumption of zero mean curvature and ask how well it can be determined by planned surveys. We also explore the impact of uncertain mean curvature on forecasts for the performance of planned dark energy probes. We find that weak lensing and photometric baryon acoustic oscillation data, in combination with CMB data, can determine the mean curvature well enough that the residual uncertainty does not degrade constraints on dark energy. We also find that determinations of curvature are highly tolerant of photometric redshift errors.
dc.description6 pages, submitted to ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0605536
dc.identifierhttp://arxiv.org/abs/astro-ph/0605536
dc.identifierAstrophys.J.652:857-863,2006
dc.identifierdoi:10.1086/508605
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175719
dc.subjectAstrophysics
dc.titleWeighing the Universe with Photometric Redshift Surveys and the Impact on Dark Energy Forecasts
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