Constraining baryonic feedback with the FABLE hydrosimulations.

我正在用宇宙结构形成模拟和观测数据研究重子反馈。对这种效应的更好理解将使未来的弱透镜调查能够制定更强大的宇宙学约束，最终提高我们对宇宙内容和膨胀历史的认识。我目前的项目是基于修改AGN反馈在FABLE流体动力学模拟。我感兴趣的是测试是否增加红移反馈的极值，特别是在宇宙正午附近，可以调和目前宇宙学中宇宙剪切测量和普朗克宇宙微波背景数据测量之间的紧张关系。我们正在比较我们修改后运行的“可观测”数据，如星系恒星质量函数和气体组分，以测试我们模型的可行性。我也是暗能量调查的一员。我将对DES弱透镜和ACT kSZ数据进行综合分析，以便从观测的角度约束重子反馈。

I am studying baryonic feedback using both cosmological structure formation simulations and observational data. Improved understanding of this effect will allow future weak lensing surveys to make more powerful cosmological constraints, ultimately advancing our knowledge of the Universe's contents and expansion history. My current project is based on modifying the AGN feedback in the FABLE hydrodynamical simulations. I am interested in testing whether increasing the extremity of feedback with redshift, particularly around cosmic noon, can reconcile the current tension in cosmology between measurements of S8 by cosmic shear surveys and those by the Planck cosmic microwave background data. We are comparing the 'observables' of our modified runs, such as the galaxy stellar mass function and gas fractions, with data in order to test the feasibility of our models. I am also a member of the Dark Energy Survey. I will be performing a combined analysis of DES weak lensing and ACT kSZ data, in order to constrain baryonic feedback from an observational standpoint.