Deep Morphological and Spectra Study of the SNR RCW 86 with FERMI-LAT
- Ajello, M.
- Baldini, L.
- Bregeon, J.
- Thayer, J. B.
- Tibaldo, L.
- Torres, D. F.
- Tosti, G.
- Troja, E.
- Uchiyama, Y.
- Vianello, G.
- Vink, J.
- Wood, K. S.
- Yassine, M.
- Bruel, P.
- Buehler, R.
- Caliandro, G. A.
- Cameron, R. A.
- Caragiulo, M.
- Cavazzuti, E.
- Charles, E.
- Chekhtman, A.
- Ciprini, S.
- Barbiellini, G.
- Cohen-Tanugi, J.
- Condon, B.
- Costanza, F.
- Cutini, S.
- D’Ammando, F.
- Palma, F. de
- Desiante, R.
- Lalla, N. Di
- Mauro, M. Di
- Venere, L. Di
- Bastieri, D.
- Drell, P. S.
- Dubner, G.
- Dumora, D.
- Duvidovich, L.
- Favuzzi, C.
- Focke, W. B.
- Fusco, P.
- Gargano, F.
- Gasparrini, D.
- Giacani, E.
- Bellazzini, R.
- Giglietto, N.
- Glanzman, T.
- Green, D. A.
- Grenier, I. A.
- Guiriec, S.
- Hays, E.
- Hewitt, J. W.
- Hill, A. B.
- Horan, D.
- Jogler, T.
- Bissaldi, E.
- Jóhannesson, G.
- Jung-Richardt, I.
- Kensei, S.
- Kuss, M.
- Larsson, S.
- Latronico, L.
- Lemoine-Goumard, M.
- Li, J.
- Li, L.
- Longo, F.
- Bloom, E. D.
- Loparco, F.
- Lovellette, M. N.
- Lubrano, P.
- Magill, J.
- Maldera, S.
- Manfreda, A.
- Mayer, Michael
- Mazziotta, M. N.
- McEnery, J. E.
- Michelson, P. F.
- Bonino, R.
- Mitthumsiri, W.
- Mizuno, T.
- Monzani, M. E.
- Morselli, A.
- Moskalenko, I. V.
- Negro, M.
- Nuss, E.
- Orienti, M.
- Orlando, E.
- Ormes, J. F.
- Bottacini, E.
- Paneque, D.
- Perkins, J. S.
- Pesce-Rollins, M.
- Piron, F.
- Pivato, G.
- Porter, T. A.
- Rainò, S.
- Rando, R.
- Razzano, M.
- Reimer, A.
- Brandt, T. J.
- Reimer, O.
- Reposeur, T.
- Schmid, J.
- Schulz, A.
- Sgrò, C.
- Simone, D.
- Siskind, E. J.
- Spada, F.
- Spandre, G.
- Spinelli, P.
DOIAbstract
RCW 86 is a young supernova remnant (SNR) showing a shell-type structure at several wavelengths and is thought to be an efficient cosmic-ray (CR) accelerator. Earlier Fermi Large Area Telescope results reported the detection of γ-ray emission coincident with the position of RCW 86 but its origin (leptonic or hadronic) remained unclear due to the poor statistics. Thanks to 6.5 years of data acquired by the Fermi-LAT and the new event reconstruction Pass 8, we report the significant detection of spatially extended emission coming from RCW 86. The spectrum is described by a power-law function with a very hard photon index (${\rm{\Gamma }}=1.42\pm {0.1}_{{\rm{stat}}}\pm {0.06}_{{\rm{syst}}}$) in the 0.1–500 GeV range and an energy flux above 10...
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