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Euclid 预备研究. XXXIX. 重子对晕质量函数的影响

Euclid preparation. XXXIX. The effect of baryons on the Halo Mass Function

Euclid Collaboration, T. Castro, S. Borgani, M. Costanzi, J. Dakin, K. Dolag, A. Fumagalli, A. Ragagnin, A. Saro, A. M. C. Le Brun, N. Aghanim, A. Amara, S. And… 展开作者

Euclid Collaboration, T. Castro, S. Borgani, M. Costanzi, J. Dakin, K. Dolag, A. Fumagalli, A. Ragagnin, A. Saro, A. M. C. Le Brun, N. Aghanim, A. Amara, S. Andreon, N. Auricchio, M. Baldi, S. Bardelli, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V. Capobianco, C. Carbone, J. Carretero, S. Casas, M. Castellano, S. Cavuoti, A. Cimatti, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, L. Corcione, F. Courbin, H. M. Courtois, M. Cropper, A. Da Silva, H. Degaudenzi, A. M. Di Giorgio, J. Dinis, F. Dubath, C. A. J. Duncan, X. Dupac, M. Farina, S. Farrens, S. Ferriol, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, E. Keihänen, S. Kermiche, A. Kiessling, M. Kilbinger, B. Kubik, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, N. Martinet, F. Marulli, R. Massey, S. Maurogordato, E. Medinaceli, M. Meneghetti, E. Merlin, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. -M. Niemi, C. Padilla, S. Paltani, F. Pasian, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, L. Pozzetti, F. Raison, R. Rebolo, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, R. Saglia, D. Sapone, B. Sartoris, P. Schneider, T. Schrabback, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, J. -L. Starck, P. Tallada-Crespí, A. N. Taylor, I. Tereno, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, E. A. Valentijn, L. Valenziano, T. Vassallo, A. Veropalumbo, Y. Wang, J. Weller, A. Zacchei, G. Zamorani, J. Zoubian, E. Zucca, A. Biviano, E. Bozzo, C. Cerna, C. Colodro-Conde, D. Di Ferdinando, N. Mauri, C. Neissner, Z. Sakr, V. Scottez, M. Tenti, M. Viel, M. Wiesmann, Y. Akrami, S. Anselmi, C. Baccigalupi, M. Ballardini, A. S. Borlaff, S. Bruton, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, G. Castignani, G. Cañas-Herrera, K. C. Chambers, A. R. Cooray, J. Coupon, O. Cucciati, A. Díaz-Sánchez, S. Davini, S. de la Torre, G. De Lucia, G. Desprez, S. Di Domizio, H. Dole, S. Escoffier, I. Ferrero, F. Finelli, L. Gabarra, K. Ganga, J. Garcia-Bellido, F. Giacomini, G. Gozaliasl, H. Hildebrandt, S. Ilić, A. Jimanez Munñoz, J. J. E. Kajava, V. Kansal, C. C. Kirkpatrick, L. Legrand, A. Loureiro, J. Macias-Perez, M. Magliocchetti, G. Mainetti, R. Maoli, M. Martinelli, C. J. A. P. Martins, S. Matthew, M. Maturi, L. Maurin, R. B. Metcalf, M. Migliaccio, P. Monaco, G. Morgante, S. Nadathur, L. Patrizii, A. Pezzotta, V. Popa, C. Porciani, D. Potter, M. Pöntinen, P. Reimberg, P. -F. Rocci, A. G. Sánchez, J. Schaye, A. Schneider, E. Sefusatti, M. Sereno, P. Simon, A. Spurio Mancini, J. Stadel, S. A. Stanford, J. Steinwagner, G. Testera, M. Tewes, R. Teyssier, S. Toft, S. Tosi, A. Troja, M. Tucci, J. Valiviita, D. Vergani

AI总结:

本研究提出以重子丰度为代理的准绝热新模型,校准后可1%精度估算星系团等效纯暗物质位力质量,结果稳健,证实重子效应对Euclid星系团宇宙学分析的影响,且其不确定性低于观测校准精度。

摘要:

Euclid 星系团光度测量巡天是一项强有力的宇宙学工具,能够极大推动我们对宇宙的认知。尽管宇宙中的重子组分相较于暗物质和暗能量处于次要地位,但它对星系团的结构和质量有着显著影响。本文提出了一种新模型,以星系团内部的重子丰度作为重子效应的代理,来精确量化重子对星系团位力晕质量的影响。该模型以准绝热性为前提构建,包含两个利用非辐射宇宙流体动力学模拟校准的参数,还用到了 Magneticum 模拟集中的单个大尺度模拟——该模拟纳入了驱动星系形成的物理过程。作为我们分析的核心结果,我们证明该模型在确定星系团的等效纯暗物质位力质量时,能达到1%的相对精度,计算的输入为流体动力学模拟中测得的对应星系团总质量和重子丰度。此外,我们还证明这一结果在宇宙学参数变化、以及模拟中所包含的亚分辨率物理过程的数值实现方式变化的情况下均保持稳健。我们的工作证实了此前关于重子对星系团宇宙学研究影响的论断。具体而言,我们展示了忽略这些效应会在类 Euclid 的星系团丰度分析中导致有偏的宇宙学约束。重要的是,我们证明由星系团质量的重子修正带来的本模型不确定性,相较于 Euclid 将校准的质量-可观测量关系的精度、以及我们目前对星系团内重子丰度的认知水平而言,处于次要地位。

英文摘要:

The Euclid photometric survey of galaxy clusters stands as a powerful cosmological tool, with the capacity to significantly propel our understanding of the Universe. Despite being sub-dominant to dark matter and dark energy, the baryonic component in our Universe holds substantial influence over the structure and mass of galaxy clusters. This paper presents a novel model to precisely quantify the impact of baryons on galaxy cluster virial halo masses, using the baryon fraction within a cluster as proxy for their effect. Constructed on the premise of quasi-adiabaticity, the model includes two parameters calibrated using non-radiative cosmological hydrodynamical simulations and a single large-scale simulation from the Magneticum set, which includes the physical processes driving galaxy formation. As a main result of our analysis, we demonstrate that this model delivers a remarkable one percent relative accuracy in determining the virial dark matter-only equivalent mass of galaxy clusters, starting from the corresponding total cluster mass and baryon fraction measured in hydrodynamical simulations. Furthermore, we demonstrate that this result is robust against changes in cosmological parameters and against varying the numerical implementation of the sub-resolution physical processes included in the simulations. Our work substantiates previous claims about the impact of baryons on cluster cosmology studies. In particular, we show how neglecting these effects would lead to biased cosmological constraints for a Euclid-like cluster abundance analysis. Importantly, we demonstrate that uncertainties associated with our model, arising from baryonic corrections to cluster masses, are sub-dominant when compared to the precision with which mass-observable relations will be calibrated using Euclid, as well as our current understanding of the baryon fraction within galaxy clusters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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