欧几里得准备工作: 模拟数千个欧几里得光谱天空
宇宙学与河外天体物理
2026-01-14 v3
摘要
我们提出了两个大规模的3500+1000暗物质halo在过去的光锥上的模拟,以及对应的两套模拟的(仿真)星系目录,代表欧几里得光谱样本。使用最新版本的PINOCCHIO代码生成了这些模拟,提供了最大的公开天空集。通过从Flagship星系目录中提取的halo占据分布(HOD)模型对halo进行填充,获得了模拟星系目录。Geppetto套组3500个仿真天空,通过对1.2 Gpc/h的盒子进行平铺,覆盖光锥,其天空轮廓为半径30度的圆形,覆盖面积为2763平方度,最低halo质量为 Msun/h。较小的盒子尺寸使该套组不适用于测量非常尺度。EuclidLargeBox套组包含1000个3.38 Gpc/h的模拟,分辨率相同,覆盖半径30度的footprint,排除银河避让区。我们在该套组上制作了1000个EuclidLargeMocks,其覆盖范围完全包含在仿真盒子内部。通过分析数密度、功率谱和2点自相关函数来验证这两套目录,表明Flagship光谱目录与仿真套组的一个实现相符,尽管我们注意到在k>0.2 h/Mpc时仅有小幅偏离于四极模。我们展示了从这些目录进行宇宙学参数推断,并表明使用一个EuclidLargeMocks实现来代替Flagship仿真,其结果在样本方差预期范围内与Flagship仿真相符。这些模拟天空将用于欧几里得数据发布第1版(DR1)的星系聚类分析。
引用
@article{arxiv.2507.12116,
title = {Euclid preparation. Simulating thousands of Euclid spectroscopic skies},
author = {Euclid Collaboration and P. Monaco and G. Parimbelli and M. Y. Elkhashab and J. Salvalaggio and T. Castro and M. D. Lepinzan and E. Sarpa and E. Sefusatti and L. Stanco and L. Tornatore and G. E. Addison and S. Bruton and C. Carbone and F. J. Castander and J. Carretero and S. de la Torre and P. Fosalba and G. Lavaux and S. Lee and K. Markovic and K. S. McCarthy and F. Passalacqua and W. J. Percival and I. Risso and C. Scarlata and P. Tallada-Crespí and M. Viel and Y. Wang and B. Altieri and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and S. Bardelli and P. Battaglia and F. Bernardeau and A. Biviano and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and G. Cañas-Herrera and V. Capobianco and V. F. Cardone 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 F. Courbin and H. M. Courtois and A. Da Silva and H. Degaudenzi and G. De Lucia and A. M. Di Giorgio and F. Dubath and F. Ducret and C. A. J. Duncan and X. Dupac and S. Dusini and A. Ealet and S. Escoffier and M. Farina and R. Farinelli and S. Farrens and S. Ferriol and F. Finelli and N. Fourmanoit 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 L. Guzzo and S. V. H. Haugan and W. Holmes and F. Hormuth and A. Hornstrup and K. Jahnke and M. Jhabvala and B. Joachimi and E. Keihänen and S. Kermiche 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 D. Maino and E. Maiorano and O. Mansutti and O. Marggraf and M. Martinelli and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and S. Mei and M. Melchior and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and E. Munari and R. Nakajima and C. Neissner 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. A. Popa and L. Pozzetti and F. Raison and A. Renzi and J. Rhodes and G. Riccio and F. Rizzo and E. Romelli and M. Roncarelli and R. Saglia and Z. Sakr and A. G. Sánchez and D. Sapone and B. Sartoris and P. Schneider and T. Schrabback and M. Scodeggio and A. Secroun and G. Seidel and M. Seiffert and S. Serrano and P. Simon and C. Sirignano and G. Sirri and J. Steinwagner and D. Tavagnacco and A. N. Taylor and I. Tereno and N. Tessore and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and L. Valenziano and J. Valiviita and T. Vassallo and G. Verdoes Kleijn and A. Veropalumbo and J. Weller and G. Zamorani and E. Zucca and V. Allevato and M. Ballardini and C. Burigana and R. Cabanac and M. Calabrese and A. Cappi and D. Di Ferdinando and J. A. Escartin Vigo and G. Fabbian and L. Gabarra and J. Martín-Fleitas and S. Matthew and N. Mauri and R. B. Metcalf and A. Pezzotta and M. Pöntinen and C. Porciani and V. Scottez and M. Sereno and M. Tenti and M. Wiesmann and Y. Akrami and S. Alvi and I. T. Andika and S. Anselmi and M. Archidiacono and F. Atrio-Barandela and S. Avila and A. Balaguera-Antolinez and P. Bergamini and D. Bertacca and M. Bethermin and A. Blanchard and L. Blot and S. Borgani and M. L. Brown and A. Calabro and B. Camacho Quevedo and F. Caro and C. S. Carvalho and F. Cogato and S. Conseil and S. Contarini and A. R. Cooray and O. Cucciati and S. Davini and G. Desprez and A. Díaz-Sánchez and J. J. Diaz and S. Di Domizio and J. M. Diego and A. Enia and Y. Fang and A. G. Ferrari and A. Finoguenov and F. Fontanot and A. Franco 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 M. Guidi and C. M. Gutierrez and A. Hall and S. Hemmati and C. Hernández-Monteagudo and H. Hildebrandt and J. Hjorth and S. Joudaki and J. J. E. Kajava and Y. Kang and V. Kansal and D. Karagiannis and K. Kiiveri and C. C. Kirkpatrick and S. Kruk and V. Le Brun and J. Le Graet and L. Legrand and M. Lembo and F. Lepori and G. Leroy and G. F. Lesci and J. Lesgourgues and L. Leuzzi and T. I. Liaudat and J. Macias-Perez and G. Maggio and M. Magliocchetti and C. Mancini and F. Mannucci and R. Maoli and C. J. A. P. Martins and L. Maurin and M. Miluzio and A. Montoro and C. Moretti and G. Morgante and S. Nadathur and K. Naidoo and A. Navarro-Alsina and S. Nesseris and K. Paterson and A. Pisani and D. Potter and S. Quai and M. Radovich and G. Rodighiero and S. Sacquegna and M. Sahlén and D. B. Sanders and D. Sciotti and E. Sellentin and L. C. Smith and J. G. Sorce and K. Tanidis and C. Tao and G. Testera and R. Teyssier and S. Tosi and A. Troja and M. Tucci and C. Valieri and A. Venhola and F. Vernizzi and G. Verza and P. Vielzeuf and N. A. Walton},
journal= {arXiv preprint arXiv:2507.12116},
year = {2026}
}
备注
19 pages, A&A in press