Time-symmetric integration in astrophysics

Kavli Affiliate: Edmund Bertschinger | Summary:Calculating the long term solution of ordinary differential equations, such as those of the $N$-body problem, is central to understanding a wide range of dynamics in astrophysics, from galaxy formation to planetary chaos. Because generally no analytic solution exists to these equations, researchers rely on numerical methods which are prone […]


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DES Science Portal: Computing Photometric Redshifts

Kavli Affiliate: Rafe Schindler | Summary:A significant challenge facing photometric surveys for cosmological purposes is the need to produce reliable redshift estimates. The estimation of photometric redshifts (photo-zs) has been consolidated as the standard strategy to bypass the high production costs and incompleteness of spectroscopic redshift samples. Training-based photo-z methods require the preparation of a […]


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DES Science Portal: Creating Science-Ready Catalogs

Kavli Affiliate: Rafe Schindler | Summary:We present a novel approach for creating science-ready catalogs through a software infrastructure developed for the Dark Energy Survey (DES). We integrate the data products released by the DES Data Management and additional products created by the DES collaboration in an environment known as DES Science Portal. Each step involved […]


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