The Impact of Observing Strategy on Cosmological Constraints with LSST

dc.contributor.authorLochner, Michelle
dc.contributor.authorScolnic, Dan
dc.contributor.authorAlmoubayyed4, Husni
dc.contributor.authorAnguit, Timo
dc.date.accessioned2022-08-23T09:25:48Z
dc.date.available2022-08-23T09:25:48Z
dc.date.issued2022
dc.description.abstractThe generation-defining Vera C. Rubin Observatory will make state-of-the-art measurements of both the static and transient universe through its Legacy Survey for Space and Time (LSST). With such capabilities, it is immensely challenging to optimize the LSST observing strategy across the survey's wide range of science drivers. Many aspects of the LSST observing strategy relevant to the LSST Dark Energy Science Collaboration, such as survey footprint definition, single-visit exposure time, and the cadence of repeat visits in different filters, are yet to be finalized. Here, we present metrics used to assess the impact of observing strategy on the cosmological probes considered most sensitive to survey design; these are large-scale structure, weak lensing, type Ia supernovae, kilonovae, and strong lens systems (as well as photometric redshifts, which enable many of these probes). We evaluate these metrics for over 100 different simulated potential survey designs. Our results show that multiple observing strategy decisions can profoundly impact cosmological constraints with LSST; these include adjusting the survey footprint, ensuring repeat nightly visits are taken in different filters, and enforcing regular cadence. We provide public code for our metrics, which makes them readily available for evaluating further modifications to the survey design. We conclude with a set of recommendations and highlight observing strategy factors that require further research.en_US
dc.identifier.citationMichelle Lochner. et al. (2022)The Impact of Observing Strategy on Cosmological Constraints with LSST. ApJS 259 58. doi:10.3847/1538-4365/ac5033.en_US
dc.identifier.urihttps://doi.org/10.3847/1538-4365/ac5033
dc.identifier.urihttp://hdl.handle.net/10566/7762
dc.language.isoenen_US
dc.subjectStatic universeen_US
dc.subjectLegacy survey for space and timeen_US
dc.subjectDark energy science collaborationen_US
dc.subjectCosmological constraintsen_US
dc.titleThe Impact of Observing Strategy on Cosmological Constraints with LSSTen_US
dc.typeArticleen_US

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