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arXiv 2108.01600astro-ph.CO
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DES Y3透镜效应和ACT / ${\it Planck}$热效应的交叉相关性

Cross-correlation of DES Y3 lensing and ACT/${\it Planck}$ thermal Sunyaev Zel'dovich Effect I: Measurements, systematics tests, and feedback model constraints

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

M. Gatti, S. Pandey, E. Baxter, J. C. Hill, E. Moser, M. Raveri, X. Fang, J. DeRose, G. Giannini, C. Doux, H. Huang, 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, T. Abbott, M. Aguena, S. Allam, F. Andrade-Oliveira, J. Annis, G. Bernstein, E. Bertin, B. Bolliet, J. R. Bond, D. Brooks, D. L. Burke, E. Calabrese, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, R. Cawthon, M. Costanzi, M. Crocce, L. N. da Costa, M. E. da Silva Pereira, J. DeVicente, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, J. Dunkley, A. E. Evrard, S. Ferraro, I. Ferrero, B. Flaugher, P. Fosalba, J. Frieman, J. Garcıa-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, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, C. Lidman, M. Lima, M. Lokken, M. S. Madhavacheril, M. A. G. Maia, J. L. Marshall, J. J. Mcmahon, P. Melchior, K. Moodley, J. J. Mohr, 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, L. F. Secco, S. Serrano, E. Sheldon, B. D. Sherwin, C. Sifon, M. Smith, M. Soares-Santos, D. Spergel, E. Suchyta, G. Tarle, D. Thomas, C. To, D. L. Tucker, T. N. Varga, J. Weller, R. D. Wilkinson, E. J. Wollack, Z. Xu

摘要:

我们提出了一个层析测量的热Sunyaev-Zeldovich(tSZ)之间的互相关图从${\it Planck}$和阿塔卡马宇宙望远镜(ACT)和弱星系透镜剪切测量在头三年的观测的暗能量调查(DES Y3)。这种关联在很宽的红移范围内对重子中的热能很敏感,因此是天体物理反馈的有力探测。我们在统计学显著性$21σ$检测到相关性,这是迄今为止最高的显著性。我们研究了潜在污染物的tSZ地图,包括宇宙红外背景(CIB)和射电源,发现CIB对我们的测量有重大影响,必须考虑到我们的分析。我们使用互相关测量来测试不同的反馈模型。特别是,我们使用几种不同的压力分布模型对流体动力学模拟校准的tSZ模型。我们的分析边缘化了红移的不确定性,剪切校准偏差,和内在的对齐效果。我们还使用${\it Planck}$或DES先验来边缘化$Ω_{\rm m}$和$σ_8$。我们发现,数据更喜欢在小尺度的压力分布的低振幅的模型,兼容的方案与强烈的活动星系核反馈和喷射的气体从内部的晕。当使用一个更灵活的模型的剪切剖面,约束较弱,数据不能区分不同的重子处方。

英文摘要:

We present a tomographic measurement of the cross-correlation between thermal Sunyaev-Zeldovich (tSZ) maps from ${\it Planck}$ and the Atacama Cosmology Telescope (ACT) and weak galaxy lensing shears measured during the first three years of observations of the Dark Energy Survey (DES Y3). This correlation is sensitive to the thermal energy in baryons over a wide redshift range, and is therefore a powerful probe of astrophysical feedback. We detect the correlation at a statistical significance of $21σ$, the highest significance to date. We examine the tSZ maps for potential contaminants, including cosmic infrared background (CIB) and radio sources, finding that CIB has a substantial impact on our measurements and must be taken into account in our analysis. We use the cross-correlation measurements to test different feedback models. In particular, we model the tSZ using several different pressure profile models calibrated against hydrodynamical simulations. Our analysis marginalises over redshift uncertainties, shear calibration biases, and intrinsic alignment effects. We also marginalise over $Ω_{\rm m}$ and $σ_8$ using ${\it Planck}$ or DES priors. We find that the data prefers the model with a low amplitude of the pressure profile at small scales, compatible with a scenario with strong AGN feedback and ejection of gas from the inner part of the halos. When using a more flexible model for the shear profile, constraints are weaker, and the data cannot discriminate between different baryonic prescriptions.

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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