Data di Pubblicazione:
2016
Abstract:
Using data from the Wide-field Infrared Survey Explorer (WISE) all-sky survey, we discovered that the nonthermal
infrared (IR) emission of blazars, the largest known population of extragalactic γ-ray sources, has peculiar spectral
properties. In this work, we confirm and strengthen our previous analyses using the latest available releases of both
the WISE and the Fermi source catalogs. We also show that there is a tight correlation between the mid-IR colors
and the γ-ray spectral index of Fermi blazars. We name this correlation the infrared–γ-ray connection. We discuss
how this connection links both the emitted powers and the spectral shapes of particles accelerated in jets arising
from blazars over 10decades in energy. Based on this evidence, we argue that the infrared–γ-ray connection is
stronger than the well-known radio–γ-ray connection.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
BL Lacertae objects: general , galaxies: active , gamma rays: general , infrared: general , radiation mechanisms: non-thermal
Elenco autori:
Massaro, F.; D'Abrusco, R.
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