Neutrino masses from CMB B-mode polarization and cosmic growth rate
Neutrino masses from CMB B-mode polarization and cosmic growth rate
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CMB B 模式极化和宇宙增长率中的中微子质量
DOI：
10.1142/s0217751x15500013
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发表时间：
2015
影响因子：
1.6
通讯作者：
Koichi Hirano
中科院分区：
文献类型：
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作者：
Keisuke Harigaya;Masahiro Kawasaki and Tsutomu T. Yanagida;T.Kobayashi;田中 実;Ichiro Oda;Ｔ．Ｋｏｂａｙａｓｈｉ;Koichi Hirano
基于宇宙微波背景（CMB）的未来观测，包括普朗克卫星CMB透镜产生的b模偏振，以及欧几里得红移调查中使用马尔可夫链蒙特卡罗（MCMC）方法的宇宙结构增长率，估计了中微子质量的约束条件。估计中微子总质量界的误差为Δ∑mν= 0.075 eV，置信度为68%。通过使用生长速率而不是星系功率谱，可以获得精确的约束条件，因为生长速率受星系偏差不确定性的影响小于星系功率谱。
Constraints on neutrino masses are estimated based on future observations of the cosmic microwave background (CMB), which includes the B-mode polarization produced by CMB lensing from the Planck satellite, and the growth rate of cosmic structure from the Euclid redshift survey by using the Markov–Chain Monte-Carlo (MCMC) method. The error in the bound on the total neutrino mass is estimated to be Δ ∑ mν= 0.075 eV with a 68% confidence level. By using the growth rate rather than the galaxy power spectrum, accurate constraints are obtained, since the growth rate is less influenced by the uncertainty regarding galaxy bias than by the galaxy power spectrum.