利用DES Year 3弱引力透镜数据校准ACT DR5银河团簇质量
宇宙学与河外天体物理
2025-12-23 v1
摘要
我们利用来自第3代暗能量探索器(DES)数据中的弱引力透镜测量，校准从Atacama Cosmology Telescope Data Release 5中通过辐射-齐-尔滕效应( SZ effect)选取的443个星系团簇的质量。我们将红移和SZ测量纳入层次模型，对堆叠的透镜信号进行贝叶斯分析，以约束星系团簇的水力学质量偏差。我们对系统不确定性的处理包括对弱透镜增益因子的测量与考虑，考虑错位效应，以及对源星系光学红移分布和剪切校准不确定性的边际化。结果约束质量-可观测量关系归一化的精度约为7%，平均WL星系团簇质量为。我们测得基于假设水力学平衡的X射线校准比例关系估计的SZ信号与真实星系团簇质量之间的偏差为。在将星系团簇分为高=0.43-0.70)和低=0.15-0.43)红移区间后，我们分别测得和。在引入额外的红移和质量自由度到水力学偏差模型后，我们发现随红移下降(幂律为，置信区间为99.95%)，这与其他近期研究 findings 一致；我们没有发现质量是否存在显著趋势。我们还展示了该结果对各种系统不确定性具有稳健性。本研究提出的弱透镜质量校准将是利用ACT星系团簇作为天体物理和宇宙学探针的有用工具。
引用
@article{arxiv.2512.18935,
title = {Weak Lensing Mass Calibration of the ACT DR5 Galaxy Clusters with the DES Year 3 Weak Lensing Data},
author = {T. Shin and E. J. Baxter and E. Lee and N. Battaglia and A. Alarcon and A. Amon and M. Becker and G. Bernstein and J. R. Bond and A. Campos and C. Chang and R. Chen and A. Choi and J. DeRose and S. Dodelson and C. Doux and J. Dunkley and J. Elvin-Poole and J. H. Esteves and S. Everett and A. Ferté and M. Gatti and S. Grandis and D. Gruen and I. Harrison and J. C. Hill and M. Hilton and M. Jarvis and N. MacCrann and J. McCullough and K. Moodley and T. Mroczkowski and J. Myles and A. Navarro Alsina and A. Nicola and L. Page and S. Pandey and J. Prat and M. Raveri and B. Ried Guachalla and R. P. Rollins and C. Sanchez and L. F. Secco and E. Sheldon and C. Sifón and M. Troxel and I. Tutusaus and A. von der Linden and E. Wollack and B. Yin and M. Aguena and S. S. Allam and O. Alves and F. Andrade-Oliveira and D. Bacon and S. Bocquet and D. Brooks and R. Camilleri and A. Carnero Rosell and J. Carretero and F. J. Castander and M. Costanzi and L. da Costa and M. E. da Silva Pereira and T. Davis and J. De Vicente and S. Desai and B. Flaugher and J. Frieman and J. Garcia-Bellido and G. Gutierrez and S. Hinton and D. L. Hollowood and D. Huterer and D. James and S. Lee and J. Marshall and J. Mena-Fernández and F. Menanteau and R. Miquel and J. Mohr and J. Muir and R. Ogando and A. Plazas Malagón and A. Porredon and K. Romer and E. Sanchez and D. Sanchez Cid and I. Sevilla and M. Smith and M. Soares-Santos and E. Suchyta and M. Swanson and C. To and N. Weaverdyck and J. Weller},
journal= {arXiv preprint arXiv:2512.18935},
year = {2025}
}
备注
30 pages, 8 figures, to be submitted to JCAP