Searching for the Culprit of Anomalous Microwave Emission: An AKARI
  PAH-range Analysis of Probable Electric Dipole Emitting Regions
  In the evolutionary path of interstellar medium inquiry, many new species of
interstellar dust have been modeled and discovered. The modes by which these
species interact and evolve are beginning to be understood, but in recent years
a peculiar new feature has appeared in microwave surveys. Anomalous microwave
emission (AME), appearing between 10 and 90 GHz, has been correlated with
thermal dust emission, leading to the popular suggestion that this anomaly is
electric dipole emission from spinning dust. The observed frequencies suggest
that spinning grains should be on the order of 1 nm in size, hinting at
poly-cyclic aromatic hydrocarbon molecules. We present data from AKARI/Infrared
Camera (IRC), due to the effective PAH/Unidentified Infrared Band (UIR)
coverage of its 9 micron survey to investigate their role within a few regions
showing strong AME in the Planck low frequency data. We include the well
studied Perseus and rho Ophiuchi clouds . We use the IRAS/IRIS 100 micron data
to account for the overall dust temperature. We present our results as
abundance maps for dust emitting around 9 micron, and 100 micron. Part of the
AME in these regions may actually be attributed to thermal dust emission, or
the star forming nature of these targets is masking the vibrational modes of
PAHs which should be present there, suggesting further investigation for
various galactic environments.
