H.E.S.S. observations of very-high-energy emission from 1RXS J023832.6-311658

Florian Gaté (1) , Thomas Fitoussi (2)

1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 IRAP - Institut de recherche en astrophysique et planétologie

Observations of the HBL blazar 1RXS J023832.6-311658 were made in 2013, 2015 and 2016 with the High Energy Stereoscopic System (H.E.S.S.). An excess of very high energy (VHE: > 100 GeV) gamma rays is clearly observed. The spectral energy distribution including the VHE spectrum will be presented. This object has a hard spectrum at TeV energies, and has a redshift z=0.23. These characteristics could be suitable for extragalactic magnetic fields for which the perspectives with H.E.S.S. will be discussed.

Mots clés: energy: high; gamma ray: VHE; HESS; magnetic field; energy spectrum; spectral; redshift; blazar

Domaines: Astrophysique [astro-ph]

Florian Gaté, Thomas Fitoussi. H.E.S.S. observations of very-high-energy emission from 1RXS J023832.6-311658. 35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.645, ⟨10.22323/1.301.0645⟩. ⟨hal-01903429⟩