Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S
- Aharonian, F.
- G. Akhperjanian, A.
- Aye, K.-M.
- R. Bazer-Bachi, A.
- Beilicke, M.
- Benbow, W.
- Berge, D.
- Berghaus, P.
- Bernlöhr, K.
- Boisson, C.
- Bolz, O.
- Borgmeier, C.
- Braun, I.
- Breitling, F.
- M. Brown, A.
- Bussons Gordo, J.
- M. Chadwick, P.
- Chounet, L.-M.
- Cornils, R.
- Costamante, L.
- Degrange, B.
- Djannati-Ataï, A.
- O'C. Drury, L.
- Dubus, G.
- Ergin, T.
- Espigat, P.
- Feinstein, F.
- Fleury, P.
- Fontaine, G.
- Funk, S.
- Gallant, Y.A.
- Giebels, B.
- Gillessen, S.
- Goret, P.
- Hadjichristidis, C.
- Hauser, M.
- Heinzelmann, G.
- Henri, G.
- Hermann, G.
- A. Hinton, J.
- Hofmann, W.
- Holleran, M.
- Horns, D.
- C. de Jager, O.
- Jung, I.
- Khélifi, B.
- Komin, Nu.
- Konopelko, A.
- J. Latham, I.
- Le Gallou, R.
- Lemière, A.
- Lemoine, M.
- Leroy, N.
- Lohse, T.
- Marcowith, A.
- Masterson, C.
- J. L. Mccomb, T.
- de Naurois, M.
- J. Nolan, S.
- Noutsos, A.
- J. Orford, K.
- L. Osborne, J.
- Ouchrif, M.
- Panter, M.
- Pelletier, G.
- Pita, S.
- Pühlhofer, G.
- Punch, M.
- C. Raubenheimer, B.
- Raue, M.
- Raux, J.
- M. Rayner, S.
- Redondo, I.
- Reimer, A.
- Reimer, O.
- Ripken, J.
- Rob, L.
- Rolland, L.
- Rowell, G.
- Sahakian, V.
- Saugé, L.
- Schlenker, S.
- Schlickeiser, R.
- Schuster, C.
- Schwanke, U.
- Siewert, M.
- Sol, H.
- Steenkamp, R.
- Stegmann, C.
- Tavernet, J.-P.
- Terrier, R.
- Théoret, C.G.
- Tluczykont, M.
- J. van Der Walt, D.
- Vasileiadis, G.
- Venter, C.
- Vincent, P.
- Visser, B.
- J. Völk, H.
- J. Wagner, S.
- Martineau-Huynh, O.
DOIAbstract
The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) gamma-rays using the H.E.S.S. 4-telescope array located in Namibia. A gamma-ray signal is detected at the 25 sigma level during an exposure of 22.1 hours live time. The image reveals an elliptically shaped emission region around the pulsar PSR B1509-58, with semi-major axis 6' in the NW-SE direction and semi-minor axis 2' approximately. This morphology coincides with the diffuse pulsar wind nebula as observed at X-ray energies by ROSAT. The overall energy spectrum from 280 GeV up to 40 TeV can be fitted by a power law with photon index Gamma = 2.27 +/- 0.03(stat.) +/- 0.20(syst.). The detected emission can be plausibly explained by inverse Compton scattering of acce...
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