Exploring the Galactic Plane: A Comparative Study of Fermi-LAT Sources and HESS's Non-Detection at TeV Energies
The HESS Galactic Plane Survey (HGPS), published in 2018, presented a decade of very-high- energy (VHE) gamma-ray observations along the Galactic plane. This study was accompanied by the release of several maps in FITS format, offering a detailed view of the region. The flux upper-limits from these HGPS maps can be compared to the high-energy (HE) spectra of sources catalogued by the Fermi-LAT in the same region. For some sources, extrapolating the Fermi-LAT flux into the VHE range predicts flux values exceeding the upper-limits set by HESS. In this work, we present the results of this comparison and highlight the sources that are of particular interest for future VHE observations.
Authors
- Marianne Lemoine-Goumard (ORCID: https://orcid.org/0000-0002-4462-3686)
- Marie-Hélène Grondin
- Francois Brun
- Baptiste Le Nagat-Neher
- P. Fauverge
Institutions
- Université de Bordeaux (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Laboratoire de Physique des deux infinis Bordeaux (FR)
- CEA Paris-Saclay (FR)
Publication Details
- Published
- 2025-09-23
- DOI
- https://doi.org/10.22323/1.501.0584
- Primary Topic
- Particle Detector Development and Performance
- Type
- article
- Field-Weighted Citation Impact
- 0.00