CONSTRAINTS ON NEUTRINO MASSES FROM THE LENSING DISPERSION OF TYPE Ia SUPERNOVAE
CONSTRAINTS ON NEUTRINO MASSES FROM THE LENSING DISPERSION OF TYPE Ia SUPERNOVAE
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DOI：
10.3847/0004-637x/828/2/112
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Ryuichiro Hada;T. Futamase
中科院分区：
文献类型：
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作者：
Ryuichiro Hada;T. Futamase
我们研究了由于引力透镜效应而导致的中微子总质量如何准确地受到 SNe Ia 星等色散的限制。为此，我们使用现实非均匀宇宙中光束的传播方程，并提出超新星样本选择，以避免与小尺度效应（例如强透镜效应或剪切效应）相关的困难。通过考虑大质量中微子影响的非线性物质功率谱拟合公式，我们发现在我们的模型中可以获得未来广域红外巡天望远镜和大型综合巡天望远镜光学成像巡天的上限。此外，我们讨论了我们需要观察超新星 Ia 多远，以及我们必须在多大程度上减少除透镜效应之外的星等误差，以实现当前最严格的限制。
We investigate how accurately the total mass of neutrinos is constrained from the magnitude dispersion of SNe Ia due to the effects of gravitational lensing. For this purpose, we use the propagation equation of light bundles in a realistic inhomogeneous universe and propose a sample selection for supernovae to avoid difficulties associated with small-scale effects such as strong lensing or shear effects. With a fitting formula for the nonlinear matter power spectrum taking account of the effects of massive neutrinos, we find that in our model it is possible to obtain the upper limit for future optical imaging surveys with the Wide-Field InfraRed Survey Telescope and Large Synoptic Survey Telescope. Furthermore, we discuss how far we need to observe SNe Ia and to what extent we have to reduce the magnitude error except for lensing in order to realize the current tightest limit .