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Constraints on galaxy bias, matter density, and primordial non-Gaussianity from the PSCz galaxy redshift survey
dc.contributor.author | Feldman, Hume A. | |
dc.contributor.author | Frieman, Joshua A. | |
dc.contributor.author | Fry, J. N. | |
dc.contributor.author | Scoccimarro, Román | |
dc.date.accessioned | 2007-04-11T18:49:22Z | |
dc.date.available | 2007-04-11T18:49:22Z | |
dc.date.issued | 2001-02 | |
dc.identifier.citation | Feldman, HA; Frieman, JA; Fry, JN; Scoccimarro, R. Constraints on galaxy bias, matter density, and primordial non-Gaussianity from the PSCz galaxy redshift survey. PHYSICAL REVIEW LETTERS. Feburary 2001. 86(8) : 1434-1437 | |
dc.identifier.uri | http://hdl.handle.net/1808/1339 | |
dc.description.abstract | We compute the bispectrum fur the IRAS PSCz catalog and find that the galaxy distribution displays the characteristic signature of gravity. Assuming Gaussian initial conditions, we obtain galaxy biasing parameters 1/b(1) = 1.20(-0.19)(+0.18) and b(2)/b(1)(2) = -0.42 +/- 0.19, with no sign of scale-dependent bias for k less than or equal to 0.3h Mpc(-1). These results impose stringent constraints on non-Gaussian initial conditions. For dimensional scaling models with chi (2)(N) statistics, we find N > 49, which implies a constraint on primordial skewness B-3 < 0.35. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.title | Constraints on galaxy bias, matter density, and primordial non-Gaussianity from the PSCz galaxy redshift survey | |
dc.type | Article | |
kusw.kuauthor | Feldman, Hume | |
dc.identifier.doi | 10.1103/PhysRevLett.86.1434 | |
dc.rights.accessrights | openAccess |