LSST Dark Energy Science Final Report

Asztalos, S

关键词: ACCURACY;    COMPUTERIZED SIMULATION;    COSMOLOGY;    GALAXIES;    LAWRENCE LIVERMORE NATIONAL LABORATORY;    OPTICAL SYSTEMS;    TELESCOPE;   

DOI  :  10.2172/902379
RP-ID  :  UCRL-TR-228173
PID  :  OSTI ID: 902379
Others  :  TRN: US200717%%561

美国|英语

来源: SciTech Connect

【 摘 要 】

Three decadal surveys recommend a large-aperture synoptic survey telescope (LSST) to allow time-domain and cosmological studies of distant objects. LLNL designed the optical system and also is expected to play a significant role in the engineering associated with the camera. Precision cosmology from ground-based instruments is in a sense terra incognita. Numerous systematic effects occur that would be minimal or absent in their space-based counterparts. We proposed developing some basic tools and techniques for investigating ''dark sector'' cosmological science with such next-generation, large-aperture, real-time telescopes. The critical research involved determining whether systematic effects might dominate the extremely small distortions (''shears'') in images of faint background galaxies. To address these issues we carried out a comprehensive data campaign and developed detailed computer simulations.