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Published April 1, 2006 | Published
Book Section - Chapter Open

A cm-wave excess over free-free emission in planetary nebulae


A byproduct of experiments designed to map the CMB is the detection of a new component of foreground galactic emission. The anomalous foreground at 10-30 GHz, unexplained by traditional emission mechanisms, correlates with 100 µm dust emission, and is thus presumably due to dust. We present evidence obtained with the CBI and SIMBA+SEST supporting the existence of a 31GHz excess over free-free emission in PNe. Possible interpretations involve a spinning dust component or 1 mm extinction due to metallic needles.

Additional Information

© 2006 International Astronomical Union. Published online: 01 April 2006. S.C. acknowledges support from FONDECYT 1060827 and FONDAP 15010003.

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Published - cmwave_excess_over_freefree_emission_in_planetary_nebulae.pdf


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August 22, 2023
January 14, 2024