Euclid 准备工作。XXVII. 星系团两点相关函数协方差模型验证
宇宙学与河外天体物理
2022-11-24 v1
摘要
目的。我们验证了一个用于星系团实空间两点相关函数协方差的半解析模型。方法。利用 1000 个模拟预期 Euclid 星系团样本的 PINOCCHIO 光锥，我们校准了一个简单模型以准确描述成协方差。随后，我们使用该模型量化似然分析对协方差变化的响应，并研究在 Euclid 星系团巡天预期统计量水平上协方差依赖于宇宙学的影响。结果。我们发现带有泊松散粒噪声的高斯模型不能正确预测星系团两点相关函数的协方差。通过引入从模拟中拟合的少量附加参数，所提出的模型以 10% 的精度复现数值协方差，在宇宙学参数 和 的优值上有约 5% 的差异。此外，我们发现协方差的宇宙学依赖性提供了均值中未包含的宝贵信息，显著提升了星系团成团性的约束能力。最后，我们发现考虑质量分箱可进一步改善宇宙学优值。我们的结果对从 Euclid 星系团巡天的两点成团性统计推导宇宙学约束具有重要意义。
引用
@article{arxiv.2211.12965,
title = {Euclid preparation. XXVII. Covariance model validation for the 2-point correlation function of galaxy clusters},
author = {Euclid Collaboration and A. Fumagalli and A. Saro and S. Borgani and T. Castro and M. Costanzi and P. Monaco and E. Munari and E. Sefusatti and N. Aghanim and N. Auricchio and M. Baldi 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 J. Carretero and F. J. Castander and M. Castellano and S. Cavuoti and R. Cledassou and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and F. Courbin and M. Cropper and A. Da Silva and H. Degaudenzi and F. Dubath and X. Dupac and S. Dusini and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and P. Franzetti and S. Galeotta and B. Garilli and W. Gillard and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and S. V. H. Haugan and W. Holmes and A. Hornstrup and P. Hudelot and K. Jahnke and M. Kümmel and S. Kermiche and A. Kiessling and M. Kilbinger and T. Kitching and M. Kunz and H. Kurki-Suonio and S. Ligori and P. B. Lilje and I. Lloro and O. Mansutti and O. Marggraf and K. Markovic and F. Marulli and R. Massey and S. Maurogordato and E. Medinaceli and S. Mei and M. Meneghetti and G. Meylan and M. Moresco and L. Moscardini 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 F. Raison and R. Rebolo-Lopez and A. Renzi 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 G. Seidel and C. Sirignano and G. Sirri and L. Stanco 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 Y. Wang and J. Weller and A. Zacchei and G. Zamorani and J. Zoubian and S. Andreon and S. Bardelli and A. Boucaud and E. Bozzo and C. Colodro-Conde and D. Di Ferdinando and G. Fabbian and M. Farina and V. Lindholm and D. Maino and N. Mauri and C. Neissner and V. Scottez 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 C. S. Carvalho and S. Casas and G. Castignani and K. Chambers and A. R. Cooray and J. Coupon and H. M. Courtois and S. Davini and S. de la Torre and G. Desprez and H. Dole and J. A. Escartin and S. Escoffier and P. G. Ferreira and F. Finelli and J. Garcia-Bellido and K. George and G. Gozaliasl and H. Hildebrandt and I. Hook and A. Jimenez Muňoz and B. Joachimi and V. Kansal and E. Keihänen and C. C. Kirkpatrick and A. Loureiro and M. Magliocchetti and R. Maoli and S. Marcin and M. Martinelli and N. Martinet and S. Matthew and M. Maturi and L. Maurin and R. B. Metcalf and G. Morgante and S. Nadathur and A. A. Nucita and L. Patrizii and J. E. Pollack 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 J. Stadel and J. Steinwagner and C. Valieri and J. Valiviita and A. Veropalumbo and M. Viel},
journal= {arXiv preprint arXiv:2211.12965},
year = {2022}
}
备注
18 pages, 14 figures