Fermi Gamma-ray Space Telescope

Towards a full 3D mapping of the $>$10 GeV extragalactic sky: first results from an ongoing spectroscopic follow-up campaign of candidate blazars in the 3FHL catalog

Stefano Marchesi
(Marco Ajello; Abhishek Desai; Amanpreet Kaur)


The newly developed 3FHL catalog, the largest catalog of sources detected at >10 GeV, is the deepest look at the very high energy sky and will remain unrivaled for years to come. However, at the present day the catalog spectroscopic completeness is rather low (