Communication Dans Un Congrès Année : 2016

H.E.S.S. Observations of the Large Magellanic Cloud

Nukri Komin
  • Fonction : Auteur
Chia-Chun Lu
  • Fonction : Auteur
Michael Mayer
  • Fonction : Auteur
Stefan Ohm
  • Fonction : Auteur
Jacco Vink

Résumé

The Large Magellanic Cloud (LMC) is an irregular satellite galaxy of the Milky Way, which has been observed extensively at Very-High-Energy (VHE) γ rays with the H.E.S.S. (High Energy Stereoscopic System) telescopes, obtaining a deep exposure of 210 hours. In this talk we will present the results of this campaign. Besides the already known pulsar wind nebula N 157B, these observations establish significant VHE γ-ray emission from the super-bubble 30 Dor C and show evidence for emission from the supernova remnant N 132D. It is the first unambiguous detection of γ rays from a super-bubble and for the first time individual cosmic-ray accelerators are identified in an external galaxy. Contrary to theoretical expectations, VHE γ-ray emission is not detected from the supernova remnant SN 1987A. We will discuss these three objects, representing the high-energy tip of the VHE γ-ray source population in the LMC, as possible cosmic-ray accelerators, and compare them with similar systems in our Galaxy. Further discoveries can be expected with more sensitive surveys of the LMC in γ rays, for instance with the Cherenkov Telescope Array.

Dates et versions

hal-02017043 , version 1 (13-02-2019)

Identifiants

Citer

Nukri Komin, Chia-Chun Lu, Michael Mayer, Stefan Ohm, Matthieu Renaud, et al.. H.E.S.S. Observations of the Large Magellanic Cloud. 34th International Cosmic Ray Conference, Jul 2015, The Hague, Netherlands. pp.849, ⟨10.22323/1.236.0849⟩. ⟨hal-02017043⟩
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