SZ effects in the Magneticum Pathfinder Simulation: Comparison with the Planck, SPT, and ACT results
SZ effects in the Magneticum Pathfinder Simulation: Comparison with the Planck, SPT, and ACT results
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DOI：
10.1093/mnras/stw2035
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发表时间：
2015-09
影响因子：
4.8
通讯作者：
K. Dolag;E. Komatsu;R. Sunyaev
中科院分区：
文献类型：
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作者：
K. Dolag;E. Komatsu;R. Sunyaev
我们利用磁探路器模拟，大宇宙体积(896MPC h(-1))的最新宇宙流体动力学模拟，计算了Sunyaev-Zeldovich(Tsz和kSZ)热效应和动能Sunyaev-Zeldovich(Tsz和kSZ)效应的单点概率密度分布函数(PDF)和功率谱以及平均Compton Y参数。这些模拟详细介绍了星系团内介质的热和化学演化，以及超大质量黑洞及其相关反馈过程的演化。我们构建了从光锥到z=0.17的Tsz和kSZ的全天地图，以及从光锥到z=5.2的8.8x8.8深的光锥的一种实现。当欧米茄(M)=0.272和西格玛(8)=0.809时，z=1.18x10(-6)处的局部宇宙。近一半(约5×10(-7))的信号来自维里质量10(13)M圆点h(-1)以下的晕。将其扩展到Planck 2015参数，我们发现(Y)over bar=1.57 x 10(-6)。
We calculate the one-point probability density distribution functions (PDF) and the power spectra of the thermal and kinetic Sunyaev-Zeldovich (tSZ and kSZ) effects and the mean Compton Y parameter using the Magneticum Pathfinder simulations, state-of-the-art cosmological hydrodynamical simulations of a large cosmological volume of (896 Mpc h(-1))(3). These simulations follow in detail the thermal and chemical evolution of the intracluster medium as well as the evolution of supermassive black holes and their associated feedback processes. We construct full-sky maps of tSZ and kSZ from the light-cones out to z = 0.17, and one realization of 8.degrees 8 x 8.degrees 8 deep light-cone out to z = 5.2. The local universe at z = 1.18 x 10(-6) for Omega(m) = 0.272 and sigma(8) = 0.809. Nearly half (approximate to 5 x 10(-7)) of the signal comes from haloes below a virial mass of 10(13) M-circle dot h(-1). Scaling this to the Planck 2015 parameters, we find (Y) over bar = 1.57 x 10(-6).