Mathematics – Logic
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348110m&link_type=abstract
American Astronomical Society, AAS Meeting #213, #481.10; Bulletin of the American Astronomical Society, Vol. 41, p.449
Mathematics
Logic
Scientific paper
Galaxy-galaxy weak lensing and galaxy clustering together serve as a probe of the matter power spectrum. Unlike cosmic shear, this probe has different systematics and can be used at low redshift, and is therefore complementary to cosmic shear and other probes of the matter power spectrum that are typically used at intermediate or high redshift. We present constraints on the matter power spectrum on tens of megaparsec scales from redshifts 0.1-0.3 using spectroscopic galaxy samples from Sloan Digital Sky Survey data release six. Our results suggest that the SDSS can deliver 5-10% level constraints on the amplitude of matter fluctuations that are broadly consistent with those from several other cosmological probes at other redshifts, and that this analysis may be a very powerful probe for deeper future surveys. We also present a validation of the methodology from N-body simulations.
Mandelbaum Rachel
Seljak Uros
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