Very high energy gamma rays from the composite SNR G 0.9+0.1
Open Access
- 2 March 2005
- journal article
- letter
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 432 (2) , L25-L29
- https://doi.org/10.1051/0004-6361:200500022
Abstract
Very high energy (>100 GeV) gamma-ray emission has been detected for the first time from the composite supernova remnant G 0.9+0.1 using the HESS instrument. The source is detected with a significance of ≈, and a photon flux above 200 GeV of ( cm-2 s-1, making it one of the weakest sources ever detected at TeV energies. The photon spectrum is compatible with a power law () with photon index . The gamma-ray emission appears to originate in the plerionic core of the remnant, rather than the shell, and can be plausibly explained as inverse Compton scattering of relativistic electrons.Keywords
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