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http://hdl.handle.net/2445/127544
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DC Field | Value | Language |
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dc.contributor.author | Xia, Jun-Qing | - |
dc.contributor.author | Baccigalupi, Carlo | - |
dc.contributor.author | Matarrese, Sabino | - |
dc.contributor.author | Verde, Licia | - |
dc.contributor.author | Viel, Matteo | - |
dc.date.accessioned | 2019-01-23T10:48:36Z | - |
dc.date.available | 2019-01-23T10:48:36Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1475-7516 | - |
dc.identifier.uri | http://hdl.handle.net/2445/127544 | - |
dc.description.abstract | In this paper we measure the angular power spectra Cℓ of three high-redshift large-scale structure probes: the radio sources from the NRAO VLA Sky Survey (NVSS), the quasar catalogue of Sloan Digital Sky Survey Release Six (SDSS DR6 QSOs) and the MegaZ-LRG (DR7), the final SDSS II Luminous Red Galaxy (LRG) photometric redshift survey. We perform a global analysis of the constraints on the amplitude of primordial non-Gaussianity from these angular power spectra, as well as from their cross-correlation power spectra with the cosmic microwave background (CMB) temperature map. In particular, we include non-Gaussianity of the type arising from single-field slow roll, multifields, curvaton (local type), and those which effects on the halo clustering can be described by the equilateral template (related to higher-order derivative type non-Gaussianity) and by the enfolded template (related to modified initial state or higher-derivative interactions). When combining all data sets, we obtain limits of fNL = 48±20, fNL = 50±265 and fNL = 183±95 at 68% confidence level for local, equilateral and enfolded templates, respectively. Furthermore, we explore the constraint on the cubic correction gNLphgr3 on the bias of dark matter haloes and obtain a limit of −1.2 × 105 < gNL < 11.3 × 105 at 95% confidence level. | - |
dc.format.extent | 16 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Institute of Physics (IOP) | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2011/08/033 | - |
dc.relation.ispartof | Journal of Cosmology and Astroparticle Physics, 2011, vol. 08, p. 033 | - |
dc.relation.uri | https://doi.org/10.1088/1475-7516/2011/08/033 | - |
dc.rights | (c) IOP Publishing and Sissa Medialab, 2011 | - |
dc.source | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) | - |
dc.subject.classification | Cosmologia | - |
dc.subject.classification | Astrofísica | - |
dc.subject.other | Cosmology | - |
dc.subject.other | Astrophysics | - |
dc.title | Constraints on primordial non-Gaussianity from large scale structure probes | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 612876 | - |
dc.date.updated | 2019-01-23T10:48:36Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/240117/EU//PHYS.LSS | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Publicacions de projectes de recerca finançats per la UE |
Files in This Item:
File | Description | Size | Format | |
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612876.pdf | 465.08 kB | Adobe PDF | View/Open |
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