论文标题
来自Planck和WMAP数据的偏振同步加速器发射的表征
Characterization of the polarized synchrotron emission from Planck and WMAP data
论文作者
论文摘要
这项工作的目的是表征弥漫性银河偏振同步加速器。我们介绍EE，BB和EB功率谱估计在23和30 GHz处的互相关的Planck和WMAP极化频率图，其中一组六个天空区域覆盖了30％至94％的天空。 EE和BB角功率光谱显示出光谱振幅的陡峭衰减，这是多极的函数，该功率定律近似于两个组件的功率指数约为-2.9。 B/E比约为0.22。 EB跨组件在1 $σ$时与零兼容，在2 $σ$级别上的EB/EE比率为1.2％。恢复的SED在23-30 GHz的频率范围内显示了E和B幂律频谱指数之间兼容的值约为-3。
The purpose of this work is to characterize the diffuse Galactic polarized synchrotron. We present EE, BB, and EB power spectra estimated cross-correlating Planck and WMAP polarization frequency maps at 23 and 30 GHz, for a set of six sky regions covering from 30% to 94% of the sky. The EE and BB angular power spectra show a steep decay of the spectral amplitude as a function of multipole, approximated by a power law with power indices around -2.9 for both components. The B/E ratio is about 0.22. The EB cross-component is compatible with zero at 1$σ$, with upper constraint on the EB/EE ratio of 1.2% at the 2$σ$ level. The recovered SED, in the frequency range 23-30 GHz, shows E and B power-law spectral indices compatible between themselves with a value of about -3.
