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首页> 外文期刊>Advances in Astronomy >Observations of Anomalous Microwave Emission from HII Regions
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Observations of Anomalous Microwave Emission from HII Regions

机译:HII地区微波异常发射的观测

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I give a summary of the observations of Anomalous Microwave Emission (AME) from HII regions. AME has been detected in, or in the vicinity of, HII regions. Given the difficulties in measuring accurate SEDs over a wide range of frequencies and in complex environments, many of these detections require more data to confirm them as emitting significant AME. The contribution from optically thickfree-free emission from UCHII regions may be also be significant in some cases. The AME emissivity, defined as the ratio of the AME brightness to the 100 μm brightness, is comparable to the value observed in high-latitude diffuse cirrus in some regions, but is significantly lower in others. However, this value is dependent on the dust temperature. More data, both at high frequencies (>~5 GHz) and high resolution (~1′ or better) is required to disentangle the emission processes in such complex regions.
机译:我总结了HII地区异常微波发射(AME)的观测结果。在HII区域中或附近检测到AME。鉴于在很宽的频率范围内和复杂的环境中测量准确的SED的困难,许多此类检测需要更多数据以确认它们发射出重要的AME。在某些情况下,来自UCHII地区的无光学厚自由发射的贡献也可能很大。 AME发射率(定义为AME亮度与100μm亮度的比率)与某些地区在高纬度漫射卷云中观察到的值相当,而在其他地区则明显较低。但是,该值取决于灰尘温度。需要更多的数据(在高频率(>〜5?GHz)和高分辨率(〜1'或更高)下才能解开此类复杂区域中的发射过程。

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