The purpose of this work is to estimate if, among the blazars not detected by the Fermi–LAT, a population of TeV emitting sources could be detected by current or future Cherenkov telescopes. We cross-matched the 5BZCAT catalog of blazars with the most recent X-ray catalogs of point-like sources. Finally, we studied the sources without a 4FGL-DR4 (Fourth catalog of Fermi Gamma-ray LAT, Data Release 4) counterpart to assess their expected TeV emission. We focused on the objects with a maximum chance of being detected by current or future TeV detectors, based on selections on their X-ray-to-radio flux ratio and their synchrotron peak frequency. In conclusion, we determined if the X-ray emission can be used as an effective proxy to find and characterize candidate TeV-emitting blazars.
Searching for TeV-emitting candidates among the X-ray bright blazar population
Doro M.;Miceli D.;Prandini E.;
2025
Abstract
The purpose of this work is to estimate if, among the blazars not detected by the Fermi–LAT, a population of TeV emitting sources could be detected by current or future Cherenkov telescopes. We cross-matched the 5BZCAT catalog of blazars with the most recent X-ray catalogs of point-like sources. Finally, we studied the sources without a 4FGL-DR4 (Fourth catalog of Fermi Gamma-ray LAT, Data Release 4) counterpart to assess their expected TeV emission. We focused on the objects with a maximum chance of being detected by current or future TeV detectors, based on selections on their X-ray-to-radio flux ratio and their synchrotron peak frequency. In conclusion, we determined if the X-ray emission can be used as an effective proxy to find and characterize candidate TeV-emitting blazars.
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