Open Access
Table 3
Astronomical catalogs used for crossmatching.
| Catalog | Description | Article | Source type | Matches |
|---|---|---|---|---|
| CRATES | A large sample of bright, compact, flat-spectrum radio sources | Healey et al. (2007) | Radio sources | 23 |
| TeVCat | An online database of Very High Energy (TeV) gamma-ray sources | Wakely & Horan (2008) | Gamma-ray sources | − |
| WIBRaLS | A catalog of radio-loud candidate γ-ray emitting blazars assembled from WISE sources | D’Abrusco et al. (2014) | Blazars | 8 |
| Roma-BZCAT | Fifth edition of the Roma-BZCAT catalog of blazars based on multifrequency surveys | Massaro et al. (2015) | Blazars | 21 |
| 2WHSP | A large list of high-synchrotron-peaked blazars (HSPs) | Chang et al. (2017) | Blazars | 6 |
| 3HSP | A sample of extreme and high-synchrotron-peaked (EHSP/HSP) blazars and candidates | Chang et al. (2019) | Blazars | − |
| 2BIGB | Gamma-ray analysis of EHSP and HSP blazars using 11-year Fermi-LAT data | Arsioli et al. (2020) | Blazars | − |
| MST-12yr | A catalog of MST sources identified in 12-year Fermi-LAT data | Campana & Massaro (2021) | Gamma-ray sources | 17 |
| 4FGL-DR4 | Data Release 4 of the Fermi-LAT catalog based on 14 years of observations | Ballet et al. (2024) | Gamma-ray sources | − |
| 1CGH | Gamma-ray detections above 10 GeV based on 16 years of Fermi-LAT observations | Arsioli et al. (2025) | Gamma-ray sources | 37 |
Notes. Summary of the catalogs used for crossmatching with photon clusters identified using SIMEFIC III followed by clustering with DBSCAN. The last column lists the number of positional matches found in our analysis.
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