Anomalous Emission from HII regions

C. Dickinson

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arXiv · 0808.0473

Anomalous Emission from HII regions

C. Dickinson

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Abstract

Spinning dust appears to be the best explanation for the anomalous emission that has been observed at $\sim 10-60$ GHz. One of the best examples of spinning dust comes from a HII region in the Perseus molecular cloud. Observations of other HII regions also show tentative evidence for excess emission at frequencies $\sim 30$ GHz, although at lower emissivity levels. A new detection of excess emission at 31 GHz in the HII region RCW175 has been made. The most plausible explanation again comes from spinning dust. HII regions are a good place to look for spinning dust as long as accurate radio data spanning the $\sim 5-100$ GHz range is available.

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C. Dickinson. 2008-08-04. Anomalous Emission from HII regions. https://arxiv.org/abs/0808.0473

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