检验星系团两点成团性多极矩的模板拟合模型
宇宙学与河外天体物理
2026-04-29 v1
摘要
\textit{Euclid} 卫星将交付一个光学选取的星系团目录，其覆盖范围从数据发布（DR）1 的大约 deg 扩展到 DR3 的大约 deg。我们评估了用于模板拟合的星系团成团性（CC）模型的有效性，该模型通过提供来自红移空间两点相关函数（2PCF）各向异性的宇宙学信息，对全形状方法形成补充。两者都将用于分析 \textit{Euclid} 中的星系团 2PCF 多极矩。我们使用三阶拉格朗日微扰理论，利用半解析 \code{PINOCCHIO} 代码模拟了星系团的两点红移空间成团性多极矩，假设类 \textit{Euclid} DR1 的天区覆盖：北半球 500 deg，南半球 1400 deg。我们从 1000 个类 DR1 合成目录中估算了 2PCF 的前三个偶数多极矩及相关的协方差矩阵。我们研究了非线性、晕偏倚以及测光红移不确定性对 2PCF 的影响。我们在现实和乐观的测光红移不确定性情景下，将三个成团性模型应用于 且维里质量 的模拟目录。我们制定了一套宽松和保守的标准，多极矩截断尺度应满足这些标准，并通过推断增长率与物质功率谱归一化参数的乘积 ，在 100 个模拟目录上进行了验证。我们测试了色散模型、Scoccimarro 模型和 Taruya--Nishimichi--Saito 模型。我们发现这三个模型中最简单的色散模型，在类 DR1 设置下，能够对低至 Mpc 尺度上的 CC 提供无偏的 推断。在存在类 DR1 星系团红移不确定性的情况下，所有成团性模型均提供了非常相似的拟合优度指标。
引用
@article{arxiv.2604.25762,
title = {Testing template-fitting models for the multipoles of the two-point clustering of galaxy clusters},
author = {Euclid Collaboration and E. Tsaprazi and A. Fumagalli and F. Marulli and A. Heavens and G. F. Lesci and M. Romanello and M. Bolzonella and Z. Sakr and B. Altieri and S. Andreon and C. Baccigalupi and M. Baldi and S. Bardelli and P. Battaglia and A. Biviano and E. Branchini and M. Brescia and S. Camera and V. Capobianco and C. Carbone and V. F. Cardone and J. Carretero and M. Castellano and G. Castignani and S. Cavuoti and K. C. Chambers and A. Cimatti and C. Colodro-Conde and G. Congedo and L. Conversi and Y. Copin and F. Courbin and H. M. Courtois and H. Degaudenzi and S. de la Torre and G. De Lucia and H. Dole and F. Dubath and X. Dupac and S. Dusini and S. Escoffier and M. Farina and R. Farinelli and S. Farrens and S. Ferriol and F. Finelli and P. Fosalba and S. Fotopoulou and M. Frailis and E. Franceschi and M. Fumana and S. Galeotta and K. George and B. Gillis and C. Giocoli and J. Gracia-Carpio and A. Grazian and F. Grupp and S. V. H. Haugan and W. Holmes and F. Hormuth and A. Hornstrup and K. Jahnke and M. Jhabvala and B. Joachimi and S. Kermiche and A. Kiessling and B. Kubik and M. Kümmel and M. Kunz and H. Kurki-Suonio and A. M. C. Le Brun and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and G. Mainetti and O. Mansutti and O. Marggraf and M. Martinelli and N. Martinet and R. J. Massey and S. Maurogordato and E. Medinaceli and S. Mei and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and E. Munari and C. Neissner and S. -M. Niemi and J. W. Nightingale 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. A. Popa and F. Raison and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and R. Saglia and D. Sapone and B. Sartoris and P. Schneider and A. Secroun and E. Sihvola and P. Simon and C. Sirignano and G. Sirri and A. Spurio Mancini and L. Stanco and P. Tallada-Crespí and A. N. Taylor and I. Tereno and N. Tessore and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and J. Valiviita and T. Vassallo and G. Verdoes Kleijn and Y. Wang and J. Weller and G. Zamorani and F. M. Zerbi and E. Zucca and M. Ballardini and C. Benoist and A. Boucaud and E. Bozzo and C. Burigana and M. Calabrese and T. Castro and J. A. Escartin Vigo and L. Gabarra and J. García-Bellido and J. Macias-Perez and R. Maoli and J. Martín-Fleitas and N. Mauri and R. B. Metcalf and P. Monaco and A. A. Nucita and A. Pezzotta and M. Pöntinen and I. Risso and V. Scottez and M. Sereno and M. Tenti and M. Tucci and M. Viel and M. Wiesmann and Y. Akrami and I. T. Andika and G. Angora and M. Archidiacono and F. Atrio-Barandela and E. Aubourg and L. Bazzanini and J. Bel and D. Bertacca and M. Bethermin and F. Beutler and A. Blanchard and L. Blot and M. Bonici and S. Borgani and M. L. Brown and S. Bruton and A. Calabro and B. Camacho Quevedo and F. Caro and C. S. Carvalho and F. Cogato and S. Contarini and A. R. Cooray and M. Costanzi and F. De Paolis and G. Desprez and A. Díaz-Sánchez and S. Di Domizio and J. M. Diego and V. Duret and M. Y. Elkhashab and A. Enia and Y. Fang and A. Finoguenov and A. Franco and K. Ganga and T. Gasparetto and E. Gaztanaga and F. Giacomini and F. Gianotti and E. J. Gonzalez and G. Gozaliasl and A. Gruppuso and M. Guidi and C. M. Gutierrez and A. Hall and C. Hernández-Monteagudo and H. Hildebrandt and J. Hjorth and J. J. E. Kajava and Y. Kang and V. Kansal and D. Karagiannis and K. Kiiveri and J. Kim and C. C. Kirkpatrick and S. Kruk and M. Lattanzi and J. Le Graet and L. Legrand and M. Lembo and F. Lepori and G. Leroy and J. Lesgourgues and T. I. Liaudat and S. J. Liu and A. Loureiro and M. Magliocchetti and A. Manjón-García and F. Mannucci and C. J. A. P. Martins and L. Maurin and M. Miluzio and C. Moretti and G. Morgante and S. Nadathur and K. Naidoo and A. Navarro-Alsina and S. Nesseris and D. Paoletti and K. Paterson and L. Patrizii and C. Pattison and A. Pisani and D. Potter and G. W. Pratt and S. Quai and M. Radovich and K. Rojas and W. Roster and S. Sacquegna and M. Sahlén and D. B. Sanders and E. Sarpa and A. Schneider and M. Schultheis and D. Sciotti and E. Sellentin and L. C. Smith and J. G. Sorce and K. Tanidis and F. Tarsitano and G. Testera and R. Teyssier and S. Tosi and A. Troja and C. Valieri and A. Venhola and D. Vergani and G. Verza and S. Vinciguerra and N. A. Walton and A. H. Wright},
journal= {arXiv preprint arXiv:2604.25762},
year = {2026}
}
备注
18 pages, 7 figures