We make forecasts for the constraining power of the 1D Wavelet Scattering Transform (WST) when used with a Lyman-$α$ forest cosmology survey. Using mock simulations and a Fisher matrix, we show that there is considerable cosmological information in the scattering transform coefficients not captured by the flux power spectrum. We estimate mock covariance matrices assuming uncorrelated Gaussian pixel noise for each quasar, at a level drawn from a simple lognormal model. The extra information comes from a smaller estimated covariance in the first-order wavelet power, and from second-order wavelet coefficients which probe non-Gaussian information in the forest. Forecast constraints on cosmological parameters from the WST are more than an order of magnitude tighter than for the power spectrum, shrinking a $4D$ parameter space by a factor of $10^6$. Should these improvements be realised with DESI, inflationary running would be constrained to test common inflationary models predicting $α_s = - 6\times 10^{-4}$ and neutrino mass constraints would be improved enough for a $5-σ$ detection of the minimal neutrino mass.
The intergalactic medium thermal history at redshift z=1.7--3.2 from the Lyman alpha forest: a comparison of measurements using wavelets and the flux distribution
Forecasting cosmic acceleration measurements using the Lyman-$α$ forest
我们提出的结果，从端到端的观测模拟设计约束宇宙膨胀历史的变化率使用的红移漂移的莱曼- $α$森林吸收线沿视线朝向明亮的类星体。在我们的模拟中，我们采用了从$z>3$亮类星体的Keck/HIRES光谱中提取的Lyman-$α$森林线，并将这些真实类星体光谱的结果与通过Monte Carlo实现产生的模拟光谱进行了比较。我们使用这些模拟的结果来评估一个专门的天文台检测红移漂移的潜力，并量化这些观测的望远镜和摄谱仪的要求。相对于Liske et al.（2008），当前工作的两个主要改进是包括来自最近目录的类星体，以及考虑一个现实的观测策略，用于一个专门的红移漂移实验，最大化$\dot{v}/σ_{\dot{v}}$。我们发现，使用一个专门的设施和我们设计的观测计划，在15年的时间内，使用一台25米的望远镜，给出了一个长期稳定的光谱仪与$R=50,000$和25%的总系统效率的$3σ$意义上的红移漂移可以检测。为了达到这个意义，目标的最佳数量是四个类星体，观测时间根据$\dot{v}/σ_{\dot{v}}$和物体可见度加权。这种优化策略导致望远镜直径减少9%或所需时间减少6%，以达到相同的S/N，作为理想情况下，均匀分布的时间相同的类星体。
Forecast for the detectability of patchy hydrogen reionization in WEAVE-QSO measurements of the Lyman-$α$ forest power spectrum at redshift $z \geq 4$
The University of Nottingham（诺丁汉大学）；University of Hertfordshire（赫特福德大学）；Indian Institute of Technology Indore（印度理工学院印多尔分校）；Aix Marseille Université（艾克斯-马赛大学）；Università degli Studi di Milano-Bicocca（米兰比可卡大学）；Camosun College（卡莫森学院）；IUCAA（印度天体物理与宇宙学研究与教学中心）；INAF - Osservatorio Astronomico di Brera（意大利国家天体物理研究所布拉耶天文台）
Forecasting local Primordial Non-Gaussianities from UNIONS Lyman-Break Galaxies and Planck CMB lensing
University of Waterloo（滑铁卢大学）；University of British Columbia（不列颠哥伦比亚大学）；Université Paris-Saclay（巴黎萨克雷大学）；The Barcelona Institute of Science and Technology（巴塞罗那科学技术学院）；Ruhr University Bochum（波鸿鲁尔大学）；Perimeter Institute for Theoretical Physics（理论物理珀米特研究所）；University of Hawaii（夏威夷大学）；National Research Council Herzberg Astronomy and Astrophysics（国家研究委员会赫尔茨伯格天文学与天体物理学研究所）
Analytic compression of the effective field theory of the Lyman-alpha forest
The Ohio State University（俄亥俄州立大学）；Massachusetts Institute of Technology（麻省理工学院）；Université Clermont-Auvergne（克莱蒙奥弗涅大学）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）
Wavelet-Scattering Signatures of Fuzzy Dark Matter in Simulated 21 cm Brightness-Temperature Maps
South-Western Institute for Astronomy Research (SWIFAR), Yunnan University（西南天体物理研究所，云南大学）；Key Laboratory of Survey Science of Yunnan Province, Yunnan University（云南省测绘科学重点实验室，云南大学）；Graduate School of Science, Division of Particle and Astrophysical Science, Nagoya University（名古屋大学理学研究科粒子与天体物理学部门）；Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University（广西相对论天体物理重点实验室，广西大学物理科学与技术学院）；School of Physics and Astronomy, Beijing Normal University（北京师范大学物理与天文学院）
