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A CROSS-CORRELATION ANALYSIS OF WMAP AND EGRET DATA IN WAVELET SPACE

机译:小波空间中WMAP和EGR数据的互相关分析

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We cross-correlate the first-year Wilkinson Microwave Anisotropy Probe (WMAP) data and the diffuse gammaray intensity maps from the Energetic Gamma-Ray Experiment Telescope (EGRET) using spherical-wavelet approaches. Correlations at the 99.7% significance level have been detected, at scales around 15° in the WMAP foreground-cleaned W-band and Q-band maps, based on data from regions that are outside the most conservative WMAP foreground mask; no significant correlation is found with the Tegmark cleaned map. The detected correlation is most likely of Galactic origin and thus can help probe the origins of possible Galactic foreground residuals and ultimately remove them from measured microwave sky maps.
机译:我们使用球形小波方法对第一年的威尔金森微波各向异性探测器(WMAP)数据与来自高能伽马射线实验望远镜(EGRET)的弥散伽马射线强度图进行互相关。根据最保守的WMAP前景遮罩以外区域的数据,在WMAP前景清洁的W波段和Q波段图中,已检测到在15°左右尺度上具有99.7%显着性水平的相关性;与Tegmark清除的地图没有发现明显的相关性。所检测到的相关性很可能是银河系起源的,因此可以帮助探测可能的银河系前景残余的起源,并最终从测量的微波天空图中将其删除。

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