The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast
The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast
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扩展重子振荡光谱巡天：宇宙学预测
DOI：
10.1093/mnras/stw135
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发表时间：
2015-10
期刊：
影响因子：
--
通讯作者：
Jeffrey A. N
中科院分区：
文献类型：
--
作者：
Gong-Bo Zhao;Yuting Wang;Ashley J. Ross;Sarah Sh;era;Will J. Percival;Kyle S. Dawson;Jean-Paul Kneib;Adam D. Myers;Joel R. Brownstein;Johan Comparat;Timothée Delubac;Pengyuan Gao;Alireza Hojjati;Kazuya Koyama;Cameron K. McBride;Andrés Meza;Jeffrey A. N
介绍了重子振荡谱巡天（eBOSS）的科学预报。重点是离散示踪剂，我们预测的重子声振荡（BAO），红移空间失真（RSD）测量，量化原始非高斯性，暗能量和修改的重力参数的fNL参数的预期精度。我们还使用莱曼a森林中的视线聚类来约束中微子的总质量。我们发现，eBOSS发光的红色星系，发射线星系和集群类星体可以达到的精度为1%，2.2%和1.6%，分别为球平均BAO距离测量。使用同样的样本，离岸价格的限制预计分别为2.5%、3.3%和2.8%。对于原始的非高斯性，eBOSS单独可以达到a（f（NL））的精度，近似于10-15。对于Chevallier-Polarski-Linder参数化，eBOSS最多可以将暗能量品质因数提高3倍，对于一般状态方程参数，eBOSS可以很好地约束三个本征模。eBOSS还可以通过提供RSD信息来显著改善对修改的重力参数的约束，这与从弱透镜测量获得的约束是高度互补的。主成分分析表明，eBOSS可以测量有效牛顿常数的本征模，精度为2%;这比没有eBOSS的情况下提高了10倍。最后，我们推导出eBOSS约束（结合普朗克，暗能量调查和BOSS）的总中微子质量，西格玛（Em（uppermost））= 0.03 eV（68% CL），这在原则上使得有可能区分中微子质量层次的两种情况。
We 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.
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影响因子：
6.4
作者：
A. Slosar;C. Hirata;U. Seljak;S. Ho;N. Padmanabhan
通讯作者：
A. Slosar;C. Hirata;U. Seljak;S. Ho;N. Padmanabhan
影响因子：
5
作者：
Wayne Hu;R. Scranton
通讯作者：
Wayne Hu;R. Scranton
影响因子：
4.4
作者：
Dvali, G;Gabadadze, G;Porrati, M
通讯作者：
Porrati, M
影响因子：
6.4
作者：
S. Asaba;C. Hikage;K. Koyama;Gong-Bo Zhao;A. Hojjati;L. Pogosian
通讯作者：
S. Asaba;C. Hikage;K. Koyama;Gong-Bo Zhao;A. Hojjati;L. Pogosian
DOI：
10.22323/1.215.0174
发表时间：
2015-05
期刊：
--
影响因子：
--
作者：
R. Braun;T. Bourke;J. Green;E. Keane;J. Wagg
通讯作者：
R. Braun;T. Bourke;J. Green;E. Keane;J. Wagg