Euclid：由空洞尺度函数的宇宙学预报
宇宙学与河外天体物理
2022-11-28 v3
摘要
Euclid 任务——其光谱星系巡天覆盖红移范围 内超过 的天区——将提供数万个宇宙学空洞的样本。本文首次从一个巡天模拟目录（官方 Euclid Flagship 模拟）探索了空洞尺度函数对暗能量（DE）性质的约束能力。我们在 Flagship 光锥中识别空洞，其紧密匹配即将到来的 Euclid 光谱数据集的特征。我们采用最先进的方法对空洞尺度函数建模：我们依赖体积守恒（Vdn）模型，这是对流行的 Sheth & van de Weygaert 空洞计数模型的修正，并通过大尺度星系偏倚的线性函数加以扩展。我们发现模型预测与测量的模拟空洞计数之间高度一致。我们计算了 Euclid 任务基于空洞尺度函数对暗能量的更新预报，并提供可靠空洞数量估计，作为使用空洞进一步进行宇宙学应用预报的基础。我们分析了两种不同的暗能量宇宙学模型：第一种由常数暗能量状态方程参数 描述，第二种由具有系数 和 的动力学状态方程描述。我们预报 上的 误差低于 ，并且当仅考虑中微子质量作为模型的附加自由参数时，我们估计动力学暗能量情形的预期品质因数（FoM）为 。该分析基于保守假设以确保完全稳健，并且是该技术未来增强的探路者。我们的结果展示了来自 Euclid 光谱样本的空洞尺度函数令人印象深刻的约束能力，既作为独立探针，也可与其他 Euclid 宇宙学探针结合。
引用
@article{arxiv.2205.11525,
title = {Euclid: Cosmological forecasts from the void size function},
author = {S. Contarini and G. Verza and A. Pisani and N. Hamaus and M. Sahlén and C. Carbone and S. Dusini and F. Marulli and L. Moscardini and A. Renzi and C. Sirignano and L. Stanco and M. Aubert and M. Bonici and G. Castignani and H. M. Courtois and S. Escoffier and D. Guinet and A. Kovacs and G. Lavaux and E. Massara and S. Nadathur and G. Pollina and T. Ronconi and F. Ruppin and Z. Sakr and A. Veropalumbo and B. D. Wandelt and A. Amara and N. Auricchio and M. Baldi and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and V. Capobianco and J. Carretero and M. Castellano and S. Cavuoti and R. Cledassou and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and F. Courbin and M. Cropper and A. Da Silva and H. Degaudenzi and F. Dubath and C. A. J. Duncan and X. Dupac and A. Ealet and S. Farrens and S. Ferriol and P. Fosalba and M. Frailis and E. Franceschi and B. Garilli and W. Gillard and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and L. Guzzo and S. Haugan and W. Holmes and F. Hormuth and K. Jahnke and M. Kümmel and S. Kermiche and A. Kiessling and M. Kilbinger and M. Kunz and H. Kurki-Suonio and R. Laureijs and S. Ligori and P. B. Lilje and I. Lloro and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and R. Massey and M. Melchior and M. Meneghetti and G. Meylan and M. Moresco and E. Munari and S. M. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and W. J. Percival and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. Popa and L. Pozzetti and F. Raison and J. Rhodes and E. Rossetti and R. Saglia and B. Sartoris and P. Schneider and A. Secroun and G. Seidel and G. Sirri and C. Surace and P. Tallada-Crespí and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and E. A. Valentijn and L. Valenziano and Y. Wang and J. Weller and G. Zamorani and J. Zoubian and S. Andreon and D. Maino and S. Mei},
journal= {arXiv preprint arXiv:2205.11525},
year = {2022}
}
备注
19 pages, 7 figures, 4 tables - published in A&A