欧几里得任务准备。待定。透镜放大对光谱星系成团性的影响
宇宙学与河外天体物理
2023-11-07 v1
摘要
在本文中，我们利用星系成团性的两点关联函数多极矩，研究了透镜放大对欧几里得（Euclid）光谱巡天分析的影响。我们确定了透镜放大对宇宙学约束的影响，以及若忽略放大所预期的最佳拟合参数偏移。我们考虑两种宇宙学分析：i) 基于 CDM 模型及其扩展 CDM 的全形状分析；ii) 在每个红移 bin 中测量结构生长率的模型无关分析。我们在预言中采用两种互补方法：Fisher 矩阵形式体系和马尔可夫链蒙特卡洛方法。调节透镜放大振幅的局部计数斜率（或放大偏置）的基准值已从 Euclid Flagship 模拟中估计。我们使用线性扰动理论，并用公开代码 coffe 对两点关联函数建模。对于 CDM 模型，我们发现宇宙学参数的估计偏置在 0.4–0.7 个标准差水平，而对于 CDM 动力学暗能量模型，透镜放大的影响略小，偏移低于 0.5 个标准差。在以测量结构生长率为目标的模型无关分析中，我们发现最高红移 bin 中生长率的估计偏置高达 个标准差。因此，在光谱巡天中不能忽略透镜放大，特别是若我们想确定生长因子——这是用 Euclid 检验广义相对论最有前景的方法之一。我们还发现，通过用一个简单模板包含透镜放大，该偏移几乎可以完全消除，且计算开销极小。
引用
@article{arxiv.2311.03168,
title = {Euclid Preparation. TBD. Impact of magnification on spectroscopic galaxy clustering},
author = {Euclid Collaboration and G. Jelic-Cizmek and F. Sorrenti and F. Lepori and C. Bonvin and S. Camera and F. J. Castander and R. Durrer and P. Fosalba and M. Kunz and L. Lombriser and I. Tutusaus and C. Viglione and Z. Sakr and N. Aghanim and A. Amara and S. Andreon and M. Baldi and S. Bardelli and C. Bodendorf and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and V. Capobianco and C. Carbone and V. F. Cardone and J. Carretero and S. Casas 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 M. Cropper and H. Degaudenzi and A. M. Di Giorgio and J. Dinis and F. Dubath and X. Dupac and S. Dusini and M. Farina and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and M. Fumana and S. Galeotta and B. Garilli and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and S. V. H. Haugan and H. Hoekstra and W. Holmes and F. Hormuth and A. Hornstrup and K. Jahnke and E. Keihänen and S. Kermiche and A. Kiessling and M. Kilbinger and B. Kubik and H. Kurki-Suonio and P. B. Lilje and V. Lindholm and I. Lloro and O. Mansutti and O. Marggraf and K. Markovic and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and S. Mei 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 G. Polenta and M. Poncet and L. A. Popa and F. Raison and R. Rebolo 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 S. Serrano and C. Sirignano and G. Sirri and L. Stanco and J. -L. Starck and C. Surace and P. Tallada-Crespí and D. Tavagnacco and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and E. A. Valentijn and L. Valenziano and T. Vassallo and A. Veropalumbo and Y. Wang and J. Weller and G. Zamorani and J. Zoubian and E. Zucca and A. Biviano and A. Boucaud and E. Bozzo and C. Colodro-Conde and D. Di Ferdinando and J. Graciá-Carpio and P. Liebing and N. Mauri and C. Neissner 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 A. Balaguera-Antolínez and M. Ballardini and S. Bruton and C. Burigana and R. Cabanac and A. Cappi and C. S. Carvalho and G. Castignani and T. Castro and G. Ca\ {n}as-Herrera and K. C. Chambers and A. R. Cooray and J. Coupon and S. Davini and S. de la Torre 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 I. Ferrero and F. Finelli and L. Gabarra and K. Ganga and J. García-Bellido and F. Giacomini and G. Gozaliasl and D. Guinet and H. Hildebrandt and S. Ilić and A. Jimenez Mu\ {n}oz and S. Joudaki and J. J. E. Kajava and V. Kansal and C. C. Kirkpatrick and L. Legrand and A. Loureiro and M. Magliocchetti and G. Mainetti and R. Maoli and M. Martinelli and C. J. A. P. Martins and S. Matthew and M. Maturi and L. Maurin and R. B. Metcalf and M. Migliaccio and P. Monaco and G. Morgante and S. Nadathur and L. Patrizii and A. Pezzotta and V. Popa and C. Porciani and D. Potter and M. Pöntinen and P. Reimberg and P. -F. Rocci and A. G. Sánchez and A. Schneider and M. Schultheis and E. Sefusatti and M. Sereno and A. Silvestri and P. Simon and A. Spurio Mancini and J. Steinwagner and G. Testera and M. Tewes and R. Teyssier and S. Toft and S. Tosi and A. Troja and M. Tucci and J. Valiviita and D. Vergani and K. Tanidis},
journal= {arXiv preprint arXiv:2311.03168},
year = {2023}
}
备注
23 pages, 14 figures