Future prospects on constraining neutrino cosmology with the Ali CMB Polarization Telescope

分类： 天文学 >> 天文学 提交时间： 2023-02-19

Dongdong Zhang Jiarui Li Jiaqi Yang Yufei Zhang Yi-Fu Cai Wenjuan Fang Chang Feng

摘要： We forecast the constraints on the parameters of neutrino physics with the constructions of Cosmic Microwave Background (CMB) temperature, E-mode polarization and lensing spectra for the ground-based Ali Cosmic Microwave Background Polarization Telescope (AliCPT). To implement the forecast calculations, we perform numerical simulations which show that AliCPT would yield the result $\sigma (N_{\mathrm{eff}})=0.42$ and $\sigma (M_{\nu})=0.18$ for the first year observation. Moreover, we investigate how the instrumental parameters, such as noise level, full width at half maxima (FWHM), and sky coverage can affect the constraints on these two parameters. Our forecasting results find that a large aperture telescope with a large sky survey strategy would significant improve the current constraints.

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