NASA's WISE, Fermi Missions Reveal a Surprising Blazar Connection
http://www.nasa.gov/.../goddard/2016/nasas-wise-fermi-missions-reveal-a-surprising-blazar-connection
Astronomers studying distant galaxies powered by monster black holes have uncovered an unexpected link between two very different wavelengths
of the light they emit, the mid-infrared and gamma rays. The discovery, which was accomplished by comparing data from NASA’s Wide-field Infrared
Survey Explorer (WISE) and Fermi Gamma-ray Space Telescope, has enabled the researchers to uncover dozens of new blazar candidates.
Francesco Massaro at the University of Turin in Italy and Raffaele D’Abrusco at the Harvard-Smithsonian Center for Astrophysics in Cambridge,
Massachusetts, show for the first time that the mid-infrared colors of blazars in WISE data correlate to an equivalent measurement of their
gamma-ray output.