arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.01601astro-ph.COastro-ph.GA
收藏

DES Y3透镜和ACT / ${\it Planck}$热Sunyaev Zel'dovich效应的互相关II:模拟和对晕压力剖面的约束

Cross-correlation of DES Y3 lensing and ACT/${\it Planck}$ thermal Sunyaev Zel'dovich Effect II: Modeling and constraints on halo pressure profiles

S. Pandey, M. Gatti, E. Baxter, J. C. Hill, X. Fang, C. Doux, G. Giannini, M. Raveri, J. DeRose, H. Huang, E. Moser, N. Battaglia, A. Alarcon, A. Amon, M. Becke… 展开作者

S. Pandey, M. Gatti, E. Baxter, J. C. Hill, X. Fang, C. Doux, G. Giannini, M. Raveri, J. DeRose, H. Huang, E. Moser, N. Battaglia, A. Alarcon, A. Amon, M. Becker, A. Campos, C. Chang, R. Chen, A. Choi, K. Eckert, J. Elvin-Poole, S. Everett, A. Ferte, I. Harrison, N. Maccrann, J. Mccullough, J. Myles, A. Navarro Alsina, J. Prat, R. P. Rollins, C. Sanchez, T. Shin, M. Troxel, I. Tutusaus, B. Yin, M. Aguena, S. Allam, F. Andrade-Oliveira, G. M. Bernstein, E. Bertin, B. Bolliet, J. R. Bond, D. Brooks, E. Calabrese, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, R. Cawthon, M. Costanzi, M. Crocce, L. N. da Costa, M. E. S. Pereira, J. De Vicente, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, J. Dunkley, S. Everett, A. E. Evrard, S. Ferraro, I. Ferrero, B. Flaugher, P. Fosalba, J. Garcia-Bellido, E. Gaztanaga, D. W. Gerdes, T. Giannantonio, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Herner, A. D. Hincks, S. R. Hinton, D. L. Hollowood, K. Honscheid, J. P. Hughes, D. Huterer, B. Jain, D. J. James, T. Jeltema, E. Krause, K. Kuehn, O. Lahav, M. Lima, M. Lokken, M. S. Madhavacheril, M. A. G. Maia, J. J. Mcmahon, P. Melchior, F. Menanteau, R. Miquel, J. J. Mohr, K. Moodley, R. Morgan, F. Nati, M. D. Niemack, L. Page, A. Palmese, F. Paz-Chinchon, A. Pieres, A. A. Plazas Malagon, M. Rodriguez-Monroy, A. K. Romer, E. Sanchez, V. Scarpine, E. Schaan, S. Serrano, I. Sevilla-Noarbe, E. Sheldon, B. D. Sherwin, C. Sifon, M. Smith, M. Soares-Santos, D. Spergel, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, C. To, T. N. Varga, J. Weller, E. J. Wollack, Z. Xu

摘要:

热的电离气体通过热Sunyaev Zel'dovich(tSZ)效应在宇宙微波背景上留下印记。引力透镜效应(追踪投射的质量)与tSZ效应(追踪投射的气压)的互相关是整个宇宙中电离重子热状态的有力探测器,并且对重子反馈等效应敏感。在一篇配套论文(Gatti et al. 2021)中,我们介绍了暗能量调查前三年观测的星系剪切测量值与阿塔卡玛宇宙学望远镜和${\it Planck}$观测组合的tSZ测量值之间的互相关的断层测量和验证测试。在这项工作中,我们使用相同的测量来约束模型的压力分布的晕在很宽的范围内的晕质量和红移。我们发现的证据表明,在低质量的晕减少压力,从活动星系核反馈的影响与预测一致。我们推断流体静力学质量偏差($B \equiv M_{500c}/M_{\rm SZ}$)从我们的测量,发现$B = 1.8\pm0.1$时,采用${\it Planck}$首选的宇宙学参数。我们还发现,我们的测量结果是一致的非零红移的$B$的演变,正确的符号和足够的幅度来解释质量偏差所需的协调集群计数测量与${\it Planck}$首选的宇宙学。我们的分析介绍了一个模型的影响,内在的路线(IA)的星系形状上的剪切-tSZ相关。我们表明,IA可以有显着的影响,这些相关性在当前的噪声水平。

英文摘要:

Hot, ionized gas leaves an imprint on the cosmic microwave background via the thermal Sunyaev Zel'dovich (tSZ) effect. The cross-correlation of gravitational lensing (which traces the projected mass) with the tSZ effect (which traces the projected gas pressure) is a powerful probe of the thermal state of ionized baryons throughout the Universe, and is sensitive to effects such as baryonic feedback. In a companion paper (Gatti et al. 2021), we present tomographic measurements and validation tests of the cross-correlation between galaxy shear measurements from the first three years of observations of the Dark Energy Survey, and tSZ measurements from a combination of Atacama Cosmology Telescope and ${\it Planck}$ observations. In this work, we use the same measurements to constrain models for the pressure profiles of halos across a wide range of halo mass and redshift. We find evidence for reduced pressure in low mass halos, consistent with predictions for the effects of feedback from active galactic nuclei. We infer the hydrostatic mass bias ($B \equiv M_{500c}/M_{\rm SZ}$) from our measurements, finding $B = 1.8\pm0.1$ when adopting the ${\it Planck}$-preferred cosmological parameters. We additionally find that our measurements are consistent with a non-zero redshift evolution of $B$, with the correct sign and sufficient magnitude to explain the mass bias necessary to reconcile cluster count measurements with the ${\it Planck}$-preferred cosmology. Our analysis introduces a model for the impact of intrinsic alignments (IA) of galaxy shapes on the shear-tSZ correlation. We show that IA can have a significant impact on these correlations at current noise levels.

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。

↑