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DESC DC2 Data Release Note
LSST Dark Energy Science Collaboration, Bela Abolfathi, Robert Armstrong +54
In preparation for cosmological analyses of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), the LSST Dark Energy Science Collaboration (LSST DESC) has created…
Photometric Redshifts with the LSST: Evaluating Survey Observing Strategies
Melissa L. Graham, Andrew J. Connolly, Željko Ivezić +5
In this paper we present and characterize a nearest-neighbors color-matching photometric redshift estimator that features a direct relationship between the precision and accuracy o…
Constraining Cosmic Expansion and Gravity with Galaxy Redshift Surveys
Scott F. Daniel, Eric V. Linder
We analyze the science reach of a next generation galaxy redshift survey such as BigBOSS to fit simultaneously for time varying dark energy equation of state and time- and scale-de…
Determining Frequentist Confidence Limits Using a Directed Parameter Space Search
Scott F. Daniel, Andrew J. Connolly, Jeff Schneider
We consider the problem of inferring constraints on a high-dimensional parameter space with a computationally expensive likelihood function. We propose a machine learning algorithm…
Confronting General Relativity with Further Cosmological Data
Scott F. Daniel, Eric V. Linder
Deviations from general relativity in order to explain cosmic acceleration generically have both time and scale dependent signatures in cosmological data. We extend our previous wo…
Testing General Relativity with Current Cosmological Data
Scott F. Daniel, Eric V. Linder, Tristan L. Smith +4
Deviations from general relativity, such as could be responsible for the cosmic acceleration, would influence the growth of large scale structure and the deflection of light by tha…