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FERMI/LAT observations of LS 5039

FERMI/LAT observations of LS 5039
FERMI/LAT observations of LS 5039
The first results from observations of the high mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent with the binary period, with the emission being modulated with a period of 3.903 ± 0.005 days; the first detection of this modulation at GeV energies. The light curve is characterized by a broad peak around superior conjunction in agreement with inverse Compton scattering models. The spectrum is represented by a power law with an exponential cutoff, yielding an overall flux (100 MeV – 300 GeV) of 4.9 ± 0.5(stat) ± 1.8(syst) ×10-7 photon cm-2 s-1, with a cutoff at 2.1 ± 0.3(stat) ± 1.1(syst) GeV and photon index Γ = 1.9 ± 0.1(stat) ± 0.3(syst). The spectrum is observed to vary with orbital phase, specifically between inferior and superior conjunction. We suggest that the presence of a cutoff in the spectrum may be indicative of magnetospheric emission similar to the emission seen in many pulsars by Fermi.
binaries, close, gamma rays, observations, stars, variables, x-rays, LS 5039
2041-8205
L56-L61
Abdo, A.A.
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Ackermann, M.
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Ajello, M.
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Atwood, W.B.
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Axelsson, M.
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Baldini, L.
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Ballet, J.
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Barbiellini, G.
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Bastieri, D.
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Baughman, B.M.
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Bechtol, K.
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Bellazzini, R.
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Berenji, B.
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Blandford, R.D.
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Bloom, E.D.
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Bonamente, E.
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Borgland, A.W.
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Bregeon, J.
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Brez, A.
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Brigida, M.
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Bruel, P.
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Burnett, T.H.
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Buson, S.
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Caliandro, G.A.
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Cameron, R.A.
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Caraveo, P.A.
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Casandjian, J.M.
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Cavazzuti, E.
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Cecchi, C.
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Çelik, Ö.
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Chaty, S.
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Chekhtman, A.
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Cheung, C.C.
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Chiang, J.
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Ciprini, S.
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Claus, R.
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Cohen-Tanugi, J.
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Cominsky, L.R.
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Conrad, J.
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Corbel, S.
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Corbet, R.
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Cutini, S.
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Dermer, C.D.
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de Angelis, A.
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de Palma, F.
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Digel, S.W.
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do Couto e Silva, E.
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Drell, P.S.
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Dubois, R.
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Dubus, G.
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Dumora, D.
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Farnier, C.
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Favuzzi, C.
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Fegan, S.J.
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Focke, W.B.
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Fortin, P.
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Frailis, M.
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Fukazawa, Y.
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Funk, S.
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Fusco, P.
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Gargano, F.
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Gasparrini, D.
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Gehrels, N.
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Germani, S.
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Giebels, B.
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Giglietto, N.
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Giordano, F.
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Glanzman, T.
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Godfrey, G.
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Grenier, I.A.
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Grondin, M.-H.
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Grove, J.E.
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Guillemot, L.
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Guiriec, S.
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Hanabata, Y.
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Harding, A.K.
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Hayashida, M.
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Hays, E.
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Hill, A.B.
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Horan, D.
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Hughes, R.E.
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Jackson, M.S.
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Jóhannesson, G.
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Johnson, A.S.
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Johnson, T.J.
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Johnson, W.N.
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Kamae, T.
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Katagiri, H.
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Kataoka, J.
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Kawai, N.
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Kerr, M.
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Knödlseder, J.
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Kocian, M.L.
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Kuehn, F.
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Kuss, M.
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Lande, J.
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Larsson, S.
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Latronico, L.
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Lemoine-Goumard, M.
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Longo, F.
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Loparco, F.
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Lott, B.
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Lovellette, M.N.
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Lubrano, P.
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Madejski, G.M.
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Makeev, A.
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Marelli, M.
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Mazziotta, M.N.
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McEnery, J.E.
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Meurer, C.
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Michelson, P.F.
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Mitthumsiri, W.
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Mizuno, T.
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Moiseev, A.A.
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Monte, C.
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Monzani, M.E.
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Morselli, A.
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Moskalenko, I.V.
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Murgia, S.
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Nolan, P.L.
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Norris, J.P.
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Nuss, E.
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Ohsugi, T.
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Omodei, N.
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Orlando, E.
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Ormes, J.F.
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Ozaki, M.
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Paneque, D.
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Panetta, J.H.
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Parent, D.
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Pelassa, V.
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Pepe, M.
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Pesce-Rollins, M.
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Piron, F.
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Porter, T.A.
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Rainò, S.
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Rando, R.
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Ray, P.S.
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Razzano, M.
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Rea, N.
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Reimer, A.
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Reimer, O.
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Reposeur, T.
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Ritz, S.
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Rochester, L.S.
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Rodriguez, A.Y.
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Romani, R.W.
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Roth, M.
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Ryde, F.
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Sadrozinski, H.F.-W.
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Sanchez, D.
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Sander, A.
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Saz Parkinson, P.M.
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Scargle, J.D.
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Sgrò, C.
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Sierpowska-Bartosik, A.
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Siskind, E.J.
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Smith, D.A.
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Smith, P.D.
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Spandre, G.
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Spinelli, P.
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Strickman, M.S.
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Suson, D.J.
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Tajima, H.
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Takahashi, H.
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Takahashi, T.
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Tanaka, T.
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Tanaka, Y.
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Thayer, J.B.
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Thompson, D.J.
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Tibaldo, L.
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Torres, D.F.
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Tosti, G.
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Tramacere, A.
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Uchiyama, Y.
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Usher, T.L.
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Vasileiou, V.
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Venter, C.
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Vilchez, N.
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Vitale, V.
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Waite, A.P.
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Wallace, E.
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Wang, P.
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Wood, K.S.
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Ylinen, T.
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Ziegler, M.
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Abdo, A.A.
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Ackermann, M.
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Ajello, M.
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Axelsson, M.
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Baldini, L.
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Ballet, J.
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Barbiellini, G.
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Bastieri, D.
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Baughman, B.M.
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Bechtol, K.
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Berenji, B.
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Blandford, R.D.
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Bonamente, E.
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Borgland, A.W.
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Bregeon, J.
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Brez, A.
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Brigida, M.
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Bruel, P.
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Burnett, T.H.
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Buson, S.
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Caliandro, G.A.
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Cameron, R.A.
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Caraveo, P.A.
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Casandjian, J.M.
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Cavazzuti, E.
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Cecchi, C.
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Çelik, Ö.
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Chaty, S.
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Chekhtman, A.
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Cheung, C.C.
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Chiang, J.
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Ciprini, S.
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Claus, R.
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Cohen-Tanugi, J.
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Cominsky, L.R.
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Conrad, J.
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Corbel, S.
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Corbet, R.
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Cutini, S.
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Dermer, C.D.
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de Angelis, A.
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de Palma, F.
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Digel, S.W.
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do Couto e Silva, E.
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Drell, P.S.
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Dubois, R.
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Dubus, G.
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Dumora, D.
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Farnier, C.
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Favuzzi, C.
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Fegan, S.J.
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Focke, W.B.
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Fortin, P.
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Frailis, M.
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Fukazawa, Y.
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Funk, S.
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Fusco, P.
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Gargano, F.
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Gasparrini, D.
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Gehrels, N.
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Germani, S.
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Giebels, B.
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Giglietto, N.
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Giordano, F.
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Glanzman, T.
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Guillemot, L.
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Hanabata, Y.
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Harding, A.K.
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Hayashida, M.
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Jóhannesson, G.
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Kamae, T.
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Katagiri, H.
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Kataoka, J.
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Kawai, N.
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Kerr, M.
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Knödlseder, J.
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Kocian, M.L.
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Kuehn, F.
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Kuss, M.
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Lande, J.
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Larsson, S.
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Latronico, L.
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Lemoine-Goumard, M.
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Longo, F.
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Loparco, F.
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Lott, B.
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Lovellette, M.N.
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Lubrano, P.
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Madejski, G.M.
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Makeev, A.
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Marelli, M.
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Mazziotta, M.N.
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McEnery, J.E.
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Meurer, C.
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Michelson, P.F.
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Mitthumsiri, W.
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Mizuno, T.
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Moiseev, A.A.
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Monte, C.
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Monzani, M.E.
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Morselli, A.
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Moskalenko, I.V.
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Murgia, S.
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Nolan, P.L.
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Norris, J.P.
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Nuss, E.
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Ohsugi, T.
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Omodei, N.
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Orlando, E.
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Ormes, J.F.
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Ozaki, M.
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Paneque, D.
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Panetta, J.H.
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Parent, D.
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Pelassa, V.
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Pepe, M.
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Pesce-Rollins, M.
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Piron, F.
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Porter, T.A.
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Rainò, S.
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Rando, R.
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Ray, P.S.
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Razzano, M.
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Rea, N.
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Reimer, A.
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Reimer, O.
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Reposeur, T.
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Ritz, S.
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Rochester, L.S.
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Rodriguez, A.Y.
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Romani, R.W.
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Roth, M.
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Ryde, F.
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Sadrozinski, H.F.-W.
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Sanchez, D.
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Sander, A.
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Saz Parkinson, P.M.
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Scargle, J.D.
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Sgrò, C.
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Sierpowska-Bartosik, A.
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Siskind, E.J.
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Smith, D.A.
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Smith, P.D.
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Spandre, G.
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Spinelli, P.
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Strickman, M.S.
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Suson, D.J.
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Tajima, H.
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Takahashi, H.
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Takahashi, T.
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Tanaka, T.
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Tanaka, Y.
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Thayer, J.B.
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Thompson, D.J.
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Tibaldo, L.
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Torres, D.F.
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Tosti, G.
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Tramacere, A.
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Uchiyama, Y.
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Usher, T.L.
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Vasileiou, V.
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Venter, C.
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Vilchez, N.
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Vitale, V.
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Waite, A.P.
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Wallace, E.
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Wang, P.
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Winer, B.L.
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Wood, K.S.
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Ylinen, T.
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Ziegler, M.
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Abdo, A.A., Ackermann, M., Ajello, M., Atwood, W.B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B.M., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R.D., Bloom, E.D., Bonamente, E., Borgland, A.W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T.H., Buson, S., Caliandro, G.A., Cameron, R.A., Caraveo, P.A., Casandjian, J.M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Chaty, S., Chekhtman, A., Cheung, C.C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominsky, L.R., Conrad, J., Corbel, S., Corbet, R., Cutini, S., Dermer, C.D., de Angelis, A., de Palma, F., Digel, S.W., do Couto e Silva, E., Drell, P.S., Dubois, R., Dubus, G., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S.J., Focke, W.B., Fortin, P., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A.K., Hayashida, M., Hays, E., Hill, A.B., Horan, D., Hughes, R.E., Jackson, M.S., Jóhannesson, G., Johnson, A.S., Johnson, T.J., Johnson, W.N., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M.L., Kuehn, F., Kuss, M., Lande, J., Larsson, S., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Madejski, G.M., Makeev, A., Marelli, M., Mazziotta, M.N., McEnery, J.E., Meurer, C., Michelson, P.F., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Monte, C., Monzani, M.E., Morselli, A., Moskalenko, I.V., Murgia, S., Nolan, P.L., Norris, J.P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paneque, D., Panetta, J.H., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Rainò, S., Rando, R., Ray, P.S., Razzano, M., Rea, N., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L.S., Rodriguez, A.Y., Romani, R.W., Roth, M., Ryde, F., Sadrozinski, H.F.-W., Sanchez, D., Sander, A., Saz Parkinson, P.M., Scargle, J.D., Sgrò, C., Sierpowska-Bartosik, A., Siskind, E.J., Smith, D.A., Smith, P.D., Spandre, G., Spinelli, P., Strickman, M.S., Suson, D.J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Tanaka, Y., Thayer, J.B., Thompson, D.J., Tibaldo, L., Torres, D.F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T.L., Vasileiou, V., Venter, C., Vilchez, N., Vitale, V., Waite, A.P., Wallace, E., Wang, P., Winer, B.L., Wood, K.S., Ylinen, T. and Ziegler, M. (2009) FERMI/LAT observations of LS 5039. The Astrophysical Journal Letters, 706 (1), L56-L61. (doi:10.1088/0004-637X/706/1/L56).

Record type: Article

Abstract

The first results from observations of the high mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent with the binary period, with the emission being modulated with a period of 3.903 ± 0.005 days; the first detection of this modulation at GeV energies. The light curve is characterized by a broad peak around superior conjunction in agreement with inverse Compton scattering models. The spectrum is represented by a power law with an exponential cutoff, yielding an overall flux (100 MeV – 300 GeV) of 4.9 ± 0.5(stat) ± 1.8(syst) ×10-7 photon cm-2 s-1, with a cutoff at 2.1 ± 0.3(stat) ± 1.1(syst) GeV and photon index Γ = 1.9 ± 0.1(stat) ± 0.3(syst). The spectrum is observed to vary with orbital phase, specifically between inferior and superior conjunction. We suggest that the presence of a cutoff in the spectrum may be indicative of magnetospheric emission similar to the emission seen in many pulsars by Fermi.

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More information

Published date: 30 October 2009
Keywords: binaries, close, gamma rays, observations, stars, variables, x-rays, LS 5039
Organisations: Astronomy Group

Identifiers

Local EPrints ID: 336983
URI: http://eprints.soton.ac.uk/id/eprint/336983
DOI: doi:10.1088/0004-637X/706/1/L56
ISSN: 2041-8205
PURE UUID: 9114b80e-188e-4712-81cb-bbae1540b392
ORCID for A.B. Hill: ORCID iD orcid.org/0000-0003-3470-4834

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Date deposited: 13 Apr 2012 15:08
Last modified: 15 Mar 2024 03:17

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Contributors

Author: A.A. Abdo
Author: M. Ackermann
Author: M. Ajello
Author: W.B. Atwood
Author: M. Axelsson
Author: L. Baldini
Author: J. Ballet
Author: G. Barbiellini
Author: D. Bastieri
Author: B.M. Baughman
Author: K. Bechtol
Author: R. Bellazzini
Author: B. Berenji
Author: R.D. Blandford
Author: E.D. Bloom
Author: E. Bonamente
Author: A.W. Borgland
Author: J. Bregeon
Author: A. Brez
Author: M. Brigida
Author: P. Bruel
Author: T.H. Burnett
Author: S. Buson
Author: G.A. Caliandro
Author: R.A. Cameron
Author: P.A. Caraveo
Author: J.M. Casandjian
Author: E. Cavazzuti
Author: C. Cecchi
Author: Ö. Çelik
Author: S. Chaty
Author: A. Chekhtman
Author: C.C. Cheung
Author: J. Chiang
Author: S. Ciprini
Author: R. Claus
Author: J. Cohen-Tanugi
Author: L.R. Cominsky
Author: J. Conrad
Author: S. Corbel
Author: R. Corbet
Author: S. Cutini
Author: C.D. Dermer
Author: A. de Angelis
Author: F. de Palma
Author: S.W. Digel
Author: E. do Couto e Silva
Author: P.S. Drell
Author: R. Dubois
Author: G. Dubus
Author: D. Dumora
Author: C. Farnier
Author: C. Favuzzi
Author: S.J. Fegan
Author: W.B. Focke
Author: P. Fortin
Author: M. Frailis
Author: Y. Fukazawa
Author: S. Funk
Author: P. Fusco
Author: F. Gargano
Author: D. Gasparrini
Author: N. Gehrels
Author: S. Germani
Author: B. Giebels
Author: N. Giglietto
Author: F. Giordano
Author: T. Glanzman
Author: G. Godfrey
Author: I.A. Grenier
Author: M.-H. Grondin
Author: J.E. Grove
Author: L. Guillemot
Author: S. Guiriec
Author: Y. Hanabata
Author: A.K. Harding
Author: M. Hayashida
Author: E. Hays
Author: A.B. Hill ORCID iD
Author: D. Horan
Author: R.E. Hughes
Author: M.S. Jackson
Author: G. Jóhannesson
Author: A.S. Johnson
Author: T.J. Johnson
Author: W.N. Johnson
Author: T. Kamae
Author: H. Katagiri
Author: J. Kataoka
Author: N. Kawai
Author: M. Kerr
Author: J. Knödlseder
Author: M.L. Kocian
Author: F. Kuehn
Author: M. Kuss
Author: J. Lande
Author: S. Larsson
Author: L. Latronico
Author: M. Lemoine-Goumard
Author: F. Longo
Author: F. Loparco
Author: B. Lott
Author: M.N. Lovellette
Author: P. Lubrano
Author: G.M. Madejski
Author: A. Makeev
Author: M. Marelli
Author: M.N. Mazziotta
Author: J.E. McEnery
Author: C. Meurer
Author: P.F. Michelson
Author: W. Mitthumsiri
Author: T. Mizuno
Author: A.A. Moiseev
Author: C. Monte
Author: M.E. Monzani
Author: A. Morselli
Author: I.V. Moskalenko
Author: S. Murgia
Author: P.L. Nolan
Author: J.P. Norris
Author: E. Nuss
Author: T. Ohsugi
Author: N. Omodei
Author: E. Orlando
Author: J.F. Ormes
Author: M. Ozaki
Author: D. Paneque
Author: J.H. Panetta
Author: D. Parent
Author: V. Pelassa
Author: M. Pepe
Author: M. Pesce-Rollins
Author: F. Piron
Author: T.A. Porter
Author: S. Rainò
Author: R. Rando
Author: P.S. Ray
Author: M. Razzano
Author: N. Rea
Author: A. Reimer
Author: O. Reimer
Author: T. Reposeur
Author: S. Ritz
Author: L.S. Rochester
Author: A.Y. Rodriguez
Author: R.W. Romani
Author: M. Roth
Author: F. Ryde
Author: H.F.-W. Sadrozinski
Author: D. Sanchez
Author: A. Sander
Author: P.M. Saz Parkinson
Author: J.D. Scargle
Author: C. Sgrò
Author: A. Sierpowska-Bartosik
Author: E.J. Siskind
Author: D.A. Smith
Author: P.D. Smith
Author: G. Spandre
Author: P. Spinelli
Author: M.S. Strickman
Author: D.J. Suson
Author: H. Tajima
Author: H. Takahashi
Author: T. Takahashi
Author: T. Tanaka
Author: Y. Tanaka
Author: J.B. Thayer
Author: D.J. Thompson
Author: L. Tibaldo
Author: D.F. Torres
Author: G. Tosti
Author: A. Tramacere
Author: Y. Uchiyama
Author: T.L. Usher
Author: V. Vasileiou
Author: C. Venter
Author: N. Vilchez
Author: V. Vitale
Author: A.P. Waite
Author: E. Wallace
Author: P. Wang
Author: B.L. Winer
Author: K.S. Wood
Author: T. Ylinen
Author: M. Ziegler

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