Speaker
Nukri Komin
(Wits University)
Description
The Large Magellanic Cloud (LMC) is an irregular satellite galaxy of the Milky Way, which has been observed extensively at Very-High-Energy (VHE) gamma-rays with the H.E.S.S. telescopes, obtaining a deep exposure of 210 hours. In this talk we will present the results of this campaign.
Besides the already known PWN N 157B, these observations establish significant VHE gamma-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 gamma 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 gamma-ray emission is not detected from SN 1987A.
We will discuss these three objects, representing the high-energy tip of the VHE gamma-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 gamma-rays, for instance with the Cherenkov Telescope Array.
| Collaboration | H.E.S.S. Collaboration |
|---|
Authors
Chia-Chun Lu
(MPIK)
Felix Aharonian
(MPIK Heidelberg, DIAS Dublin)
Jacco Vink
(University of Amsterdam)
Matthieu Renaud
(LUPM)
Michael Mayer
(Humboldt-Universität zu Berlin)
Nukri Komin
(Wits University)
Stefan Ohm
(DESY)
