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Non-Gaussianity from large-scale structure surveys Verde, Licia Relativitat general (Física) Cosmologia General relativity (Physics) Cosmology 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. 2017-09-01T08:37:05Z 2017-09-01T08:37:05Z 2010 2017-09-01T08:37:05Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1687-7969 https://hdl.handle.net/2445/114874 603918 eng Reproducció del document publicat a: https://doi.org/10.1155/2010/768675 Advances In Astronomy, 2010, vol. 2010, num. 768675 https://doi.org/10.1155/2010/768675 info:eu-repo/grantAgreement/EC/FP7/240117/EU//PHYS.LSS cc-by (c) Verde, Licia, 2010 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess 16 p. application/pdf Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))