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A WISE perspective of the blazar hunt in the γ-ray sky

Published online by Cambridge University Press:  11 September 2023

Francesco Massaro Open the ORCID record for Francesco Massaro [Opens in a new window]  and
Raffaele D’Abrusco
Francesco Massaro
Affiliation:
Dipartimento di Fisica, Università degli Studi di Torino, via Pietro Giuria 1, I-10125 Torino, Italy
Raffaele D’Abrusco
Affiliation:
Center for Astrophysics–Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
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Abstract

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Thanks to the data of the WISE all-sky survey we discovered that the non-thermal infrared emission of blazars, the largest population of associated γ-ray sources, has peculiar spectral properties. Here we provide a summary of all results achieved on the infrared–γ-ray connection. We also show results on the latest statistical analysis of the tight correlation between the mid-infrared colors and the γ-ray spectral index for Fermi blazars, a connection that links both emitted powers and spectral shapes of particles accelerated in blazar jets over ten decades in frequency of the electromagnetic spectrum. Finally, we outline all developments performed in the last decade achieved using the infrared– γ-ray connection to discover hundreds of new blazars within the sample of unidentified γ-ray sources thanks to optical spectroscopic observations.

Keywords

active galactic nucleiblazarsrelativistic jetssurveysgamma-rays
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 14 - 17
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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