Exploring the relation between (sub-)millimeter radiation and gamma-ray
  emission in blazars with Planck and Fermi
  The coexistence of Planck and Fermi satellites in orbit has enabled the
exploration of the connection between the (sub-)millimeter and gamma-ray
emission in a large sample of blazars. We find that the gamma-ray emission and
the (sub-)mm luminosities are correlated over five orders of magnitude.
However, this correlation is not significant at some frequency bands when
simultaneous observations are considered. The most significant statistical
correlations, on the other hand, arise when observations are quasi-simultaneous
within 2 months. Moreover, we find that sources with an approximate spectral
turnover in the middle of the mm-wave regime are more likely to be strong
gamma-ray emitters. These results suggest a physical relation between the newly
injected plasma components in the jet and the high levels of gamma-ray
emission.
