Mathematics – Logic
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21712204m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #122.04; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
The LSST survey will provide a very deep mine of data on the extra-galactic universe. The system is designed to enable all four of the probes identified by the Dark Energy task force, measuring cosmological parameters through cataloging 4 billion galaxies in photometric redshift bins for Baryon Acoustic Oscillation measurements, discovering hundreds of thousands of massive galaxy clusters, providing good lightcurves for hundreds of thousands of type Ia supernovae, and mapping the large scale dark matter distribution across half the sky and 10 billion years of cosmic growth with weak gravitational lensing. The high statistical precision will allow us to look for spatial variations in the universal expansion, while the combination and cross-correlation of these measurements will allow us to explore generalized parametrizations of dark energy, and test for non-standard gravity as analternative. The survey data will also allow other cosmological tests, such as cosmography with the thousands of expected strong gravitational lenses. Moreover, the study of galaxies to low surface brightness levels, the supermassive black holes active in their nuclei, and the supernovae they host will be greatly expanded by the enormous samples of objects and images generated. The scale of each of these science projects will require us to think of new ways of exploring and handling such large datasets.
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