First Cosmic Gamma-Ray Horizon Catalogue, 1CGH Virtual Observatory Resource

Authors
  1. Arsioli B.
  2. Chang Y.-L.
  3. Ighina L.
  4. Published by
    CDS
Abstract

We present the First Cosmic Gamma-ray Horizon (1CGH) catalogue, featuring gamma-ray detections above 10GeV based on 16 years of observations with the Fermi Large Area Telescope (LAT) satellite. After carefully selecting a sample of blazars and blazar candidates from catalogues in the literature, we performed a binned likelihood analysis and identified 2791 gamma-ray emitters above 10 GeV, at >3 sigma level, including 62 that are new gamma-ray detections. For each source, we estimated the mean energy of the highest- energy bin and analysed them in the context of the cosmic gamma-ray horizon. By adopting a reference model for the Extragalactic Background Light (EBL), we identified a subsample of 525 sources where moderate to severe gamma-ray absorption could be detected across the redshift range of 0 to 3. This work provides the most up-to-date compilation of detections above 10GeV, along with their redshift information. We condense extensive results from the literature, including reports on observational campaigns dedicated to blazars and gamma-ray sources, thereby delivering an unprecedented review of the redshift information for sources detected above 10GeV. Additionally, we highlight key 1CGH sources where redshift information remains incomplete, offering guidance for future optical observation campaigns. The 1CGH catalogue aims to track the most significant sources for studying the gamma-ray transparency of the universe. Furthermore, it provides a targeted subsample where the EBL optical depth (tau(E,z)) can be robustly measured using Fermi-LAT data.

Keywords
  1. gamma-ray-astronomy
  2. surveys
  3. galaxies
  4. catalogs
  5. quasars
  6. bl-lacertae-objects
  7. redshifted
Bibliographic source Bibcode
2025MNRAS.539.1458A
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/539/1458
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/539/1458

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/539/1458
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/539/1458
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/539/1458
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/539/1458/1cgh_v1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/539/1458/1cgh_v1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/539/1458/1cgh_v1?

History

2025-05-02T09:10:13Z
Resource record created
2025-05-02T08:11:36Z
Updated
2025-05-02T09:10:13Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr