The Galactic Center region viewed by H.E.S.S
A. Viana (for the H.E.S.S. collaboration)

TL;DR
H.E.S.S. observations of the Galactic Center reveal detailed VHE gamma-ray emissions, including a steady source at Sgr A* and diffuse emission along the Galactic Plane, providing insights into energetic particle processes near the Milky Way's core.
Contribution
This paper presents the first detailed VHE gamma-ray view of the Galactic Center region, including the detection of a steady source at Sgr A* and diffuse emission, enhancing understanding of high-energy processes.
Findings
Detection of a steady gamma-ray source at Sgr A*
Identification of diffuse emission along the Galactic Plane
Diffuse emission may dominate the highest energy spectrum
Abstract
The Galactic center region is the most active region in the Milky Way harboring a wealth of photon sources at all wavelengths. H.E.S.S. observations of the Galactic Center (GC) region revealed for the first time in very high energy (VHE, E> 100 GeV) gamma-rays a detailed view of the innermost 100 pc of the Milky Way and provided a valuable probe for the acceleration processes and propagation of energetic particles near the GC. H.E.S.S. has taken more than 180 hours of good-quality observations toward the GC region since the experience started in 2003. A strong and steady gamma-ray source has been detected coincident in position with the supermassive black hole Sgr A*. Besides the central pointlike source, a diffuse emission extended along the Galactic Plane has been detected within about 1 around the GC. An accurate analysis of the Galactic center region suggests that the…
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Taxonomy
TopicsAstrophysical Phenomena and Observations · Gamma-ray bursts and supernovae · Astrophysics and Cosmic Phenomena
