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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/114874
Non-Gaussianity from large-scale structure surveys
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With the advent of galaxy surveys which provide large samples of galaxies or galaxy clusters over a volume comparable to the horizon size (SDSS-III, HETDEX, Euclid, JDEM, LSST, Pan-STARRS, CIP, etc.) or mass-selected large cluster samples over a large fraction of the extra-galactic sky (Planck, SPT, ACT, CMBPol, B-Pol), it is timely to investigate what constraints these surveys can impose on primordial non-Gaussianity. I illustrate here three different approaches: higher-order correlations of the three dimensional galaxy distribution, abundance of rare objects (extrema of the density distribution), and the large-scale clustering of halos (peaks of the density distribution). Each of these avenues has its own advantages, but, more importantly, these approaches are highly complementary under many respects.
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VERDE, Licia. Non-Gaussianity from large-scale structure surveys. Advances In Astronomy. 2010. Vol. 2010, num. 768675. ISSN 1687-7969. [consulted: 9 of June of 2026]. Available at: https://hdl.handle.net/2445/114874