The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

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dc.contributor.authorZhao, Gong-Bo
dc.contributor.authorWang, Yuting
dc.contributor.authorRoss, Ashley J.
dc.contributor.authorShandera, Sarah
dc.contributor.authorPercival, Will J.
dc.contributor.authorDawson, Kyle S.
dc.contributor.authorKneib, Jean-Paul
dc.contributor.authorMyers, Adam D.
dc.contributor.authorBrownstein, Joel R.
dc.contributor.authorComparat, Johan
dc.contributor.authorDelubac, Timothee
dc.contributor.authorGao, Pengyuan
dc.contributor.authorHojjati, Alireza
dc.contributor.authorKoyama, Kazuya
dc.contributor.authorMcBride, Cameron K.
dc.contributor.authorMeza, Andres
dc.contributor.authorNewman, Jeffrey A.
dc.contributor.authorPalanque-Delabrouille, Nathalie
dc.contributor.authorPogosian, Levon
dc.contributor.authorPrada, Francisco
dc.contributor.authorRossi, Graziano
dc.contributor.authorSchneider, Donald P.
dc.contributor.authorSeo, Hee-Jong
dc.contributor.authorTao, Charling
dc.contributor.authorWang, Dandan
dc.contributor.authorYeche, Christophe
dc.contributor.authorZhang, Hanyu
dc.contributor.authorZhang, Yuecheng
dc.contributor.authorZhou, Xu
dc.contributor.authorZhu, Fangzhou
dc.contributor.authorZou, Hu
dc.date.accessioned2016-07-28T21:40:23Z
dc.date.available2016-07-28T21:40:23Z
dc.date.issued2016-04
dc.descriptionIndexación: Web of Sciencees
dc.description.abstractWe present a science forecast for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) survey. Focusing on discrete tracers, we forecast the expected accuracy of the baryonic acoustic oscillation (BAO), the redshift-space distortion (RSD) measurements, the fNL parameter quantifying the primordial non-Gaussianity, the dark energy and modified gravity parameters. We also use the line-of-sight clustering in the Lyman a forest to constrain the total neutrino mass. We find that eBOSS luminous red galaxies, emission line galaxies and clustering quasars can achieve a precision of 1, 2.2 and 1.6 per cent, respectively, for spherically averaged BAO distance measurements. Using the same samples, the constraint on fob is expected to be 2.5, 3.3 and 2.8 per cent, respectively. For primordial non-Gaussianity, eBOSS alone can reach an accuracy of a (f(NL)) similar to 10-15. eBOSS can at most improve the dark energy figure of merit by a factor of 3 for the Chevallier-Polarski-Linder parametrization, and can well constrain three eigenmodes for the general equation-of-state parameter. eBOSS can also significantly improve constraints on modified gravity parameters by providing the RSD information, which is highly complementary to constraints obtained from weak lensing measurements. A principal component analysis shows that eBOSS can measure the eigenmodes of the effective Newton's constant to 2 per cent precision; this is a factor of 10 improvement over that achievable without eBOSS. Finally, we derive the eBOSS constraint (combined with Planck, Dark Energy Survey and BOSS) on the total neutrino mass, sigma (Em(upsilon)) = 0.03 eV (68 per cent CL), which in principle makes it possible to distinguish between the two scenarios of neutrino mass hierarchies.es
dc.description.urihttp://mnras.oxfordjournals.org/content/457/3/2377
dc.identifier.issn1365-2966
dc.identifier.otherDOI: 10.1093/mnras/stw135
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/1568
dc.language.isoenes
dc.publisherMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 457 (3):2377-2390es
dc.subjectDARK ENERGYes
dc.subjectlarge-scale structure of Universees
dc.subjectDIGITAL SKY SURVEYes
dc.subjectSDSS-IIIes
dc.subjectACOUSTIC-OSCILLATIONSes
dc.subjectNON-GAUSSIANITYes
dc.subjectNEUTRINO MASSes
dc.subjectDATA SETSes
dc.subjectGALAXIESes
dc.subjectQUASARSes
dc.subjectFORESTes
dc.subjectCONSTRAINTSes
dc.titleThe extended Baryon Oscillation Spectroscopic Survey: a cosmological forecastes
dc.typeArtículoes
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