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astro-ph.HE2025

HESS J1831098 -- Exploring a pulsar halo scenario with H.E.S.S. data

Karim Sabri, Yves Gallant, Justine Devin +1

Pulsar halos are a class of extended very-high-energy (VHE) sources highlighted by the HAWC observatory towards the Geminga pulsar and PSR B065614. These VHE sources are interpr…

astro-ph.IM2025

Design and characterization of the Flat-Field Calibration of the NectarCAM Camera

Anastasiia Mikhno, Federica Bradascio, Jonathan Biteau +13

The NectarCAM flat-field flasher is a calibration device designed for the camera that will equip the Medium-Sized Telescopes (MSTs) of the northern site of the Cherenkov Telescope…

astro-ph.HE2025

On the cosmic-ray distribution in the Galactic Center region: New insights from H.E.S.S

J. Devin, A. Lemière, K. Streil +2

We performed a spectro-morphological analysis of the diffuse emission in the Galactic center region with H.E.S.S. gamma-ray data. We relied on templates to model the diffuse emissi…

astro-ph.HE2025

Galactic transient sources with the Cherenkov Telescope Array Observatory

Cherenkov Telescope Array Observatory Consortium

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…

astro-ph.HE2025

The H.E.S.S. extragalactic sky survey with the first decade of observations

H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +140

The results of the first extragalactic gamma-ray survey by the High Energy Stereoscopic System (H.E.S.S.) are presented. The survey comprises 2720 hours of very high-energy gamma-r…

astro-ph.HE2025

Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage

H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +137

The colliding-wind binary system Carinae has been identified as a source of high-energy (HE, below 100\,GeV) and very-high-energy (VHE, above 100\,GeV) gamma rays…