2008/08/04 by C. Dickinson, Dickinson, C.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.0808.0473
Proceedings of the conference "CMB Component Separation and the Physics of Foregrounds", 4 pages, 2 figures
arxiv created 2008/08/04 · arxiv updated 2009/12/01
Spinning dust appears to be the best explanation for the anomalous emission that has been observed at ∼ 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 ∼ 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 ∼ 5-100 GHz range is available.