Euclid准备工作. 第L部分：$\Lambda(\nu)$CDM 宇宙学中的线性星系偏差校准
宇宙学与河外天体物理
2024-10-30 v1
摘要
Euclid 任务旨在绘制暗黑宇宙的几何图景，为深化我们对宇宙的理解提供前所未有的机会，其光度星系团调查尤为关键。本文聚焦于提高星系团偏差（halo bias, HB）预测精度，这对于从星系团聚集度中推导宇宙学约束至关重要。我们的研究基于与星系团质量函数（halo mass function, HMF）相关联的峰值背景分割（peak-background split, PBS）模型；通过对 OpenGADGET3 代码完成的扩展 -体模拟结果进行参数化修正，实现精确校准。采用固定初始条件和配对初始条件的模拟，我们细致分析了物质-星系跨谱，并利用 PINOCCHIO 代码生成的大量 mock 目录校准其协方差。这确保了对我们 HB 校准不确定性的全面理解。我们的发现表明，校准后的 HB 模型对包括大质子数 neutrino 在内的宇宙学参数变化具有惊人的鲁棒性。该校准 HB 模型的鲁棒性和适应性为 Euclid 任务将提供的星系团调查在宇宙学分析中发挥重要作用。本study 强调，不断细化诸如 HB 之类的宇宙学工具校准以匹配观测数据不断提升的精度的必要性。展望我们模型对宇宙学约束的影响，我们发现鉴于 Euclid 调查的灵敏度，HB 的误校准可能在星系团宇宙学分析中引入偏差。本工作填补了这一关键空白，确保 HB 校准匹配 Euclid 调查预期的精度。本模型的实现已公开于 https://github.com/TiagoBsCastro/CCToolkit。
引用
@article{arxiv.2409.01877,
title = {Euclid preparation. L. Calibration of the linear halo bias 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 M. Costanzi and J. Dakin and K. Dolag and P. Monaco and A. Saro and E. Sefusatti and N. Aghanim and L. Amendola and S. Andreon and C. Baccigalupi and M. Baldi and C. Bodendorf and D. Bonino and E. Branchini and M. Brescia and A. Caillat and S. Camera and V. Capobianco and C. Carbone and J. Carretero and S. Casas and M. Castellano and G. Castignani and S. Cavuoti and A. Cimatti and C. Colodro-Conde and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and A. Costille and F. Courbin and H. M. Courtois and A. Da Silva and H. Degaudenzi and G. De Lucia and A. M. Di Giorgio and M. Douspis and X. Dupac and S. Dusini and M. Farina and S. Farrens and S. Ferriol and P. Fosalba and M. Frailis and E. Franceschi and M. Fumana and S. Galeotta and B. Gillis and C. Giocoli and P. Gómez-Alvarez and A. Grazian and F. Grupp and L. Guzzo and S. V. H. Haugan and W. Holmes and F. Hormuth and A. Hornstrup and S. Ilić and K. Jahnke and M. Jhabvala and B. Joachimi and E. Keihänen and S. Kermiche and A. Kiessling and M. Kilbinger and B. Kubik and M. Kunz and H. Kurki-Suonio and P. B. Lilje and V. Lindholm and I. Lloro and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and M. Martinelli and N. Martinet and F. Marulli and R. Massey and S. Maurogordato and E. Medinaceli and M. Melchior and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan 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 M. Poncet and L. A. Popa and L. Pozzetti and F. Raison and A. Renzi and G. Riccio and E. Romelli and M. Roncarelli and R. Saglia and Z. Sakr and J. -C. Salvignol and A. G. Sánchez and D. Sapone and B. Sartoris and M. Schirmer and A. Secroun and S. Serrano and C. Sirignano and G. Sirri and L. Stanco and J. Steinwagner and P. Tallada-Crespí and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and L. Valenziano and T. Vassallo and G. Verdoes Kleijn and Y. Wang and J. Weller and A. Zacchei and G. Zamorani and E. Zucca and A. Biviano and M. Bolzonella and E. Bozzo and C. Burigana and M. Calabrese and D. Di Ferdinando and J. A. Escartin Vigo and F. Finelli and J. Gracia-Carpio and S. Matthew and N. Mauri and A. Pezzotta and M. Pöntinen and C. Porciani and V. Scottez and M. Tenti and M. Viel and M. Wiesmann and Y. Akrami and V. Allevato and S. Anselmi and M. Archidiacono and F. Atrio-Barandela and A. Balaguera-Antolinez and M. Ballardini and D. Bertacca and M. Bethermin and A. Blanchard and L. Blot and H. Böhringer and S. Bruton and R. Cabanac and A. Calabro and G. Cañas-Herrera and A. Cappi and F. Caro and C. S. Carvalho and K. C. Chambers and A. R. Cooray and B. De Caro and S. de la Torre and G. Desprez and A. Díaz-Sánchez and J. J. Diaz and S. Di Domizio and H. Dole and S. Escoffier and A. G. Ferrari and P. G. Ferreira and I. Ferrero and A. Finoguenov and A. Fontana and F. Fornari and L. Gabarra and K. Ganga and J. García-Bellido and T. Gasparetto and V. Gautard and E. Gaztanaga and F. Giacomini and F. Gianotti and G. Gozaliasl and C. M. Gutierrez and A. Hall and H. Hildebrandt and J. Hjorth and A. Jimenez Muñoz and J. J. E. Kajava and V. Kansal and D. Karagiannis and C. C. Kirkpatrick and A. M. C. Le Brun and J. Le Graet and L. Legrand and J. Lesgourgues and T. I. Liaudat and A. Loureiro and G. Maggio and M. Magliocchetti and F. Mannucci and R. Maoli and C. J. A. P. Martins and L. Maurin and R. B. Metcalf and M. Miluzio and A. Montoro and A. Mora and C. Moretti and G. Morgante and S. Nadathur and Nicholas A. Walton and L. Pagano and L. Patrizii and V. Popa and D. Potter and I. Risso and P. -F. Rocci and M. Sahlén and E. Sarpa and A. Schneider and M. Sereno and A. Spurio Mancini and J. Stadel and K. Tanidis and C. Tao and N. Tessore and G. Testera and R. Teyssier and S. Toft and S. Tosi and A. Troja and M. Tucci and C. Valieri and J. Valiviita and D. Vergani and G. Verza and P. Vielzeuf},
journal= {arXiv preprint arXiv:2409.01877},
year = {2024}
}
备注
20 pages; 12 figures; accepted for publication in A&A; abstract abridged for arXiv submission;