Search for very-high-energy γ-ray emission from Galactic globular clusters with H.E.S.S.
Context. Globular clusters (GCs) are established emitters of high-energy (HE, 100 MeV < E < 100 GeV) γ-ray radiation which could originate from the cumulative emission of the numerous millisecond pulsars (msPSRs) in the clusters’ cores or from inverse…
Search for Photon-Linelike Signatures from Dark Matter Annihilations with H.E.S.S.
Gamma-ray line signatures can be expected in the very-high-energy (𝐸𝛾 >100 GeV) domain due to self-annihilation or decay of dark matter (DM) particles in space. Such a signal would be readily distinguishable from astrophysical 𝛾-ray…
Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint…
Identification of HESS J1303−631 as a pulsar wind nebula through γ-ray, X-ray, and radio observations
Aims. The previously unidentified very high-energy (VHE; E > 100 GeV) γ-ray source HESS J1303−631, discovered in 2004, is re-examined including new data from the H.E.S.S. Cherenkov telescope array in order to identify this object. Archival data from…
Probing the extent of the non-thermal emission from the Vela X region at TeV energies with H.E.S.S.
Context. Vela X is a region of extended radio emission in the western part of the Vela constellation: one of the nearest pulsar wind nebulae, and associated with the energetic Vela pulsar (PSR B0833-45). Extended…
Constraints on the gamma-ray emission from the cluster-scale AGN outburst in the Hydra A galaxy cluster
Context. In some galaxy clusters, powerful active galactic nuclei (AGN) have blown bubbles with cluster scale extent into the ambient medium. The main pressure support of these bubbles is not known to date, but…
Spectral Analysis and Interpretation of the γ-Ray Emission from the Starburst Galaxy NGC 253
Very high energy (VHE; E ⩾ 100 GeV) and high-energy (HE; 100 MeV ⩽ E ⩽ 100 GeV) data from γ-ray observations performed with the H.E.S.S. telescope array and the Fermi-LAT instrument, respectively, are analyzed in order…
Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N 157B with H.E.S.S.
We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power…
HESS observations of the Carina nebula and its enigmatic colliding wind binary Eta Carinae
The massive binary system Eta Carinae and the surrounding H ii complex, the Carina nebula, are potential particle acceleration sites from which very high energy (VHE; E≥ 100 GeV) γ-ray emission could be expected.…
Discovery of VHE γ-ray emission and multi-wavelength observations of the BL Lacertae object 1RXS J101015.9−311909
1RXS J101015.9 − 311909 is a galaxy located at a redshift of z = 0.14 hosting an active nucleus (called AGN) belonging to the class of bright BL Lac objects. Observations at high (HE, E > 100 MeV) and very high (VHE, E > 100 GeV)…
