Speaker
Prof.
Alberto Franceschini
(UNIPD)
Description
Extreme High Frequency Peaked BL Lacs (EHBL) are the cosmic sources able to produce the highest energy photons in the Universe. They make a relatively rare population of objects, difficult to identify also because they are quite faint at the energies probed by the Fermi surveys. Based on a hard X-ray selection, Foffano et al. have uncovered a small subset of such population. We discuss in the present contribution the implications of observing them with Cherenkov telescopes with the aim of constraining the extragalactic diffuse background at far-infrared wavelengths, where it has never been observed because of the overwhelming dominance of the local foreground emissions.
Primary author
Prof.
Alberto Franceschini
(UNIPD)
Co-authors
Elisa Prandini
(PD)
Luca Foffano
(PD)
Simona Paiano
(PD)
