{ "id": "astro-ph/0501265", "version": "v1", "published": "2005-01-13T17:18:54.000Z", "updated": "2005-01-13T17:18:54.000Z", "title": "Very high energy gamma rays from the composite SNR G0.9+0.1", "authors": [ "H. E. S. S. Collaboration", "F. Aharonian" ], "comment": "5 pages, 4 figures, accepted by A&A letters", "journal": "Astron.Astrophys. 432 (2005) L25-L29", "doi": "10.1051/0004-6361:200500022", "categories": [ "astro-ph" ], "abstract": "Very high energy (> 100 GeV) gamma-ray emission has been detected for the first time from the composite supernova remnant G0.9+0.1 using the H.E.S.S. instrument. The source is detected with a significance of 13 sigma, and a photon flux above 200 GeV of (5.7+/-0.7 stat +/- 1.2 sys) * 10^-12 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 (dN/dE \\propto E^-Gamma) with photon index Gamma = 2.40 +/- 0.11 stat +/- 0.20 sys. 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.", "revisions": [ { "version": "v1", "updated": "2005-01-13T17:18:54.000Z" } ], "analyses": { "keywords": [ "high energy gamma rays", "composite snr", "composite supernova remnant", "photon index gamma", "gamma-ray emission appears" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable", "inspire": 674822 } } }