论文标题
星系簇中CMB的组合。蒙特卡洛计算
Comptonization of CMB in galaxy clusters. Monte Carlo computations
论文作者
论文摘要
所考虑的问题是确定由于热Sunyaev-Zeldovich效应而导致的宇宙微波背景（CMB）光谱形状的变化。我们从数值上对由热的麦克斯韦血浆组成的CMB辐射的光谱强度进行建模。为此，开发了具有光子重量的相对论蒙特卡洛代码。该代码使我们能够在宽的能源范围内构造成构成的CMB频谱。将结果与已知的分析溶液和先前的数值模拟进行了比较。我们还计算了从云中出现的辐射强度的角度分布，这表明TSZ效应的光谱形状对于逃脱光子的不同方向而言并非通用。可以应用数值方法来模拟不同光学深度，温度，光子源的初始光谱及其空间分布的过程，获得的结果可能与研究星系簇的特征有影响。
The problem under consideration is to determine the change of the Cosmic Microwave Background (CMB) spectral shape due to the thermal Sunyaev-Zeldovich effect. We numerically model the spectral intensity of the CMB radiation Comptonized by the hot intergalactic Maxwellian plasma. To this aim, a relativistic Monte Carlo code with photon weights is developed. The code enables us to construct the Comptonized CMB spectrum in a wide energy range. The results are compared with known analytical solutions and previous numerical simulations. We also calculate the angular distributions of the intensity of radiation emerging from the cloud, which show that the spectral shape of the tSZ effect is not universal for different directions of escaping photons. The numerical method can be applied to simulate the processes of Comptonization for different optical depths, temperatures, initial spectra of photon sources and their spatial distributions, the obtained results may have implications on investigating the profiles of galaxy clusters.
