Euclid 准备。XXIV. $\Lambda(\nu)$CDM 宇宙学中暗晕质量函数的校准
宇宙学与河外天体物理
2023-03-17 v2
摘要
Euclid 的光度星系团巡天有潜力成为一种极具竞争力的宇宙学探针。利用星系团观测的主要宇宙学探针是其计数，其中暗晕质量函数（HMF）是关键的理论量。我们提出了一种新的解析 HMF 校准，其准确度和精度水平使得从该量恢复宇宙学参数的不确定性相对于 Euclid 星系团计数的其他不确定性来源可忽略不计。我们的模型针对一套 N 体模拟进行校准，采用贝叶斯方法并考虑模拟中数值效应引起的系统误差。首先，我们通过使用由不同阶拉格朗日扰动理论生成的初始条件，并采用不同的模拟盒子尺寸和质量分辨率，测试了不同 N 体代码的 HMF 预测的收敛性。然后，我们量化使用不同晕找算法的影响，以及由此产生的差异如何传播到宇宙学约束。为追踪 HMF 中普适性的违背，我们还分析了基于以不同谱指数的无标度功率谱为特征、并假设爱因斯坦-德西特和标准 CDM 膨胀历史的初始条件的模拟。基于这些结果，我们构建了 HMF 的拟合函数，并证明其以亚百分之一精度重现了包括含质量中微子宇宙学在内的 9 种不同 CDM 模型变体的结果。校准系统不确定性相对于未来质量-观测关系的预期精度在很大程度上可忽略不计；唯一的显著例外是晕找算法的影响，其可能导致有偏的宇宙学推断。
引用
@article{arxiv.2208.02174,
title = {Euclid preparation. XXIV. Calibration of the halo mass function in $\Lambda(\nu)$CDM cosmologies},
author = {Euclid Collaboration and T. Castro and A. Fumagalli and R. E. Angulo and S. Bocquet and S. Borgani and C. Carbone and J. Dakin and K. Dolag and C. Giocoli and P. Monaco and A. Ragagnin and A. Saro and E. Sefusatti and M. Costanzi and A. M. C. Le Brun and P. -S. Corasaniti and A. Amara and L. Amendola and M. Baldi and R. Bender and C. Bodendorf and E. Branchini and M. Brescia and S. Camera and V. Capobianco and J. Carretero and M. Castellano and S. Cavuoti and A. Cimatti and R. Cledassou and G. Congedo and L. Conversi and Y. Copin and L. Corcione and F. Courbin and A. Da Silva and H. Degaudenzi and M. Douspis and F. Dubath and C. A. J. Duncan and X. Dupac and S. Farrens and S. Ferriol and P. Fosalba and M. Frailis and E. Franceschi and S. Galeotta and B. Garilli and B. Gillis and A. Grazian and F. Grupp and S. V. H. Haugan and F. Hormuth and A. Hornstrup and P. Hudelot and K. Jahnke and S. Kermiche and T. Kitching and M. Kunz and H. Kurki-Suonio and P. B. Lilje and I. Lloro and O. Mansutti and O. Marggraf and F. Marulli and M. Meneghetti and E. Merlin and G. Meylan and M. Moresco and L. Moscardini and E. Munari and S. M. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. Popa and L. Pozzetti and F. Raison and R. Rebolo and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and R. Saglia and D. Sapone and B. Sartoris and P. Schneider and G. Seidel and G. Sirri and L. Stanco and P. Tallada Crespí and A. N. Taylor and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and E. A. Valentijn and L. Valenziano and T. Vassallo and Y. Wang and J. Weller and A. Zacchei and G. Zamorani and S. Andreon and S. Bardelli and E. Bozzo and C. Colodro-Conde and D. Di Ferdinando and M. Farina and J. Graciá-Carpio and V. Lindholm and C. Neissner and V. Scottez and M. Tenti and E. Zucca and C. Baccigalupi and A. Balaguera-Antolínez and M. Ballardini and F. Bernardeau and A. Biviano and A. Blanchard and A. S. Borlaff and C. Burigana and R. Cabanac and A. Cappi and C. S. Carvalho and S. Casas and G. Castignani and A. Cooray and J. Coupon and H. M. Courtois and S. Davini and G. De Lucia and G. Desprez and H. Dole and J. A. Escartin and S. Escoffier and F. Finelli and K. Ganga and J. Garcia-Bellido and K. George and G. Gozaliasl and H. Hildebrandt and I. Hook and S. Ilić and V. Kansal and E. Keihanen and C. C. Kirkpatrick and A. Loureiro and J. Macias-Perez and M. Magliocchetti and R. Maoli and S. Marcin and M. Martinelli and N. Martinet and S. Matthew and M. Maturi and R. B. Metcalf and G. Morgante and S. Nadathur and A. A. Nucita and L. Patrizii and A. Peel and V. Popa and C. Porciani and D. Potter and A. Pourtsidou and M. Pöntinen and A. G. Sánchez and Z. Sakr and M. Schirmer and M. Sereno and A. Spurio Mancini and R. Teyssier and J. Valiviita and A. Veropalumbo and M. Viel},
journal= {arXiv preprint arXiv:2208.02174},
year = {2023}
}
备注
25 pages, 21 figures, 5 tables, 3 appendixes; v2 matches published version