HETDEX: Two-dimensional Galaxy Power Spectrum

Details HETDEX: Two-dimensional Galaxy Power Spectrum HETDEX: Two-dimensional Galaxy Power Spectrum

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942414c&link_type=abstract

American Astronomical Society, AAS Meeting #219, #424.14

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Hobby-Eberly Dark Energy Experiment (HETDEX) will gather the spectra from roughly 800,000 distant galaxies at z=1.9-3.5. The two-dimensional galaxy power spectrum contains much more information beyond the angular averaged power spectrum. By analyzing the angular dependence of the 2-d power spectrum, we can separately measure the angular diameter distance and Hubble constant as well as the growth rate of cosmic structures. Such measurement will further improve our understanding on the nature of dark energy, and it will also enable us to test the general theory of relativity on cosmological scales. In this poster, we will present the expected 2-d power spectrum from HETDEX and the cosmological constraints.

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