Euclid 准备工作。XLI. 实空间中的星系功率谱建模
宇宙学与河外天体物理
2025-10-06 v2
摘要
我们针对即将进行的 Euclid 光谱星系样本分析，研究了微扰星系偏袒展开式的精度。我们将使用大尺度结构有效场论（EFTofLSS）前沿方案的欧拉星系偏袒展开式，与基于拉格朗日微扰理论和高分辨率模拟的混合方法进行了性能比较。这些模型以 Flagship I N 体模拟在 的共动快照为基准，这些快照已被填入 H 星系，在约 的体积内生成了数百万天体的星表。我们的分析表明，在所考虑的 redshift 范围内，两种模型均可用于对参数 提供稳健推断，且约束能力相当。我们还确定了 EFTofLSS 模型在尺度截断和模型自由度方面的有效性范围。从这些测试中可以看出，标准三阶欧拉偏袒展开式能够准确描述实空间星系功率谱的全形状，直至最大波数 ，即使测量精度远优于百分之一水平。特别地，对于包含六个自由 nuisance 参数的配置，包括局域与非局域偏袒参数、物质抵消项以及 shot-noise 贡献的修正，上述结论成立。将潮汐偏袒参数固定为物理动机关系仍可获得无偏宇宙学约束。最后，我们在匹配 Euclid 预期覆盖区的体积下重复了分析，但未考虑如纯度和完备性等观测效应，表明我们能在这些尺度和 redshift 范围内得到一致的宇宙学约束。
引用
@article{arxiv.2312.00679,
title = {Euclid preparation. XLI. Galaxy power spectrum modelling in real space},
author = {Euclid Collaboration and A. Pezzotta and C. Moretti and M. Zennaro and A. Moradinezhad Dizgah and M. Crocce and E. Sefusatti and I. Ferrero and K. Pardede and A. Eggemeier and A. Barreira and R. E. Angulo and M. Marinucci and B. Camacho Quevedo and S. de la Torre and D. Alkhanishvili and M. Biagetti and M. -A. Breton and E. Castorina and G. D'Amico and V. Desjacques and M. Guidi and M. Kärcher and A. Oddo and M. Pellejero Ibanez and C. Porciani and A. Pugno and J. Salvalaggio and E. Sarpa and A. Veropalumbo and Z. Vlah and A. Amara and S. Andreon and N. Auricchio and M. Baldi and S. Bardelli and R. Bender and C. Bodendorf and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and V. Capobianco and C. Carbone and V. F. Cardone and J. Carretero and S. Casas and F. J. Castander and M. Castellano and S. Cavuoti and A. Cimatti and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and F. Courbin and H. M. Courtois and A. Da Silva and H. Degaudenzi and A. M. Di Giorgio and J. Dinis and X. Dupac and S. Dusini and A. Ealet and M. Farina and S. Farrens and P. Fosalba and M. Frailis and E. Franceschi and S. Galeotta and B. Gillis and C. Giocoli and B. R. Granett and A. Grazian and F. Grupp and L. Guzzo and S. V. H. Haugan and F. Hormuth and A. Hornstrup and K. Jahnke and B. Joachimi and E. Keihänen and S. Kermiche and A. Kiessling and M. Kilbinger and T. Kitching and B. Kubik and M. Kunz and H. Kurki-Suonio and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and Y. Mellier 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 W. J. Percival and V. Pettorino and S. Pires and G. Polenta and J. E. Pollack and M. Poncet and L. A. Popa and L. Pozzetti and F. Raison and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and E. Rossetti and R. Saglia and D. Sapone and B. Sartoris and P. Schneider and T. Schrabback and A. Secroun and G. Seidel and M. Seiffert and S. Serrano and C. Sirignano and G. Sirri and L. Stanco and C. Surace and P. Tallada-Crespí and A. N. Taylor and I. Tereno 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 G. Zamorani and J. Zoubian and E. Zucca and A. Biviano and E. Bozzo and C. Burigana and C. Colodro-Conde and D. Di Ferdinando and G. Mainetti and M. Martinelli and N. Mauri and Z. Sakr and V. Scottez and M. Tenti and M. Viel and M. Wiesmann and Y. Akrami and V. Allevato and S. Anselmi and C. Baccigalupi and M. Ballardini and F. Bernardeau and A. Blanchard and S. Borgani and S. Bruton and R. Cabanac and A. Cappi and C. S. Carvalho and G. Castignani and T. Castro and G. Cañas-Herrera and K. C. Chambers and S. Contarini and A. R. Cooray and J. Coupon and S. Davini and G. De Lucia and G. Desprez and S. Di Domizio and H. Dole and A. Díaz-Sánchez and J. A. Escartin Vigo and S. Escoffier and P. G. Ferreira and F. Finelli and L. Gabarra and K. Ganga and J. García-Bellido and F. Giacomini and G. Gozaliasl and A. Hall and S. Ilić and S. Joudaki and J. J. E. Kajava and V. Kansal and C. C. Kirkpatrick and L. Legrand and A. Loureiro and J. Macias-Perez and M. Magliocchetti and F. Mannucci and R. Maoli and C. J. A. P. Martins and S. Matthew and L. Maurin and R. B. Metcalf and M. Migliaccio and P. Monaco and G. Morgante and S. Nadathur and Nicholas A. Walton and L. Patrizii and V. Popa and D. Potter and A. Pourtsidou and M. Pöntinen and I. Risso and P. -F. Rocci and A. G. Sánchez and M. Sahlén and A. Schneider and M. Sereno and P. Simon and A. Spurio Mancini and J. Steinwagner and G. Testera and R. Teyssier and S. Toft and S. Tosi and A. Troja and M. Tucci and J. Valiviita and D. Vergani and G. Verza and P. Vielzeuf},
journal= {arXiv preprint arXiv:2312.00679},
year = {2025}
}
备注
40 pages, 20 figures