High-contrast peaks in the cosmic microwave background (CMB) anisotropy can appear as unresolved sources to observers. We fit simulated CMB maps generated with a cold dark matter model to a set of unresolved features at instrumental resolution 0.5°-1.5° to derive the integral number density per steradian n(>| T|) of features brighter than threshold temperature | T| and compare the results to recent experiments. A typical medium-scale experiment observing 0.001 sr at 0.5° resolution would expect to observe one feature brighter than 85 μK after convolution with the beam profile, with less than 5% probability to observe a source brighter than 150 μK. Increasing the power-law index of primordial density perturbations n from 1 to 1.5 raises these temperature limits | T | by a factor of 2. The MSAM features are in agreement with standard cold dark matter models and are not necessarily evidence for processes beyond the standard model.
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机译：宇宙微波背景（CMB）各向异性中的高对比度峰可能是观察者无法分辨的信号源。我们将用冷暗物质模型生成的模拟CMB映射拟合到仪器分辨率为0.5°-1.5°的一组未解析特征上，以得出比阈值温度更亮的特征的每球面度n（> | T |）的积分数密度。 T |并将结果与最近的实验进行比较。一个典型的以0.5°分辨率观察0.001 sr的中等规模实验，在与光束轮廓卷积后，有望观察到一个比85μK亮的特征，而观察到一个比150μK亮的光源的可能性不到5％。将原始密度扰动的幂律指数n从1增加到1.5会增加这些温度限制| T | MSAM功能与标准冷暗物质模型一致，且不一定是超出标准模型的过程的证据。
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