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Discovery of very h...
Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on ITS redshift
- Article/chapterEnglish2010
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LIBRIS-ID:oai:DiVA.org:kth-29080
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29080URI
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https://doi.org/10.1088/2041-8205/708/2/L100DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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QC 20110125
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We report the first detection of very high energy(83) (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 +/- 0.5(stat) +/- 0.3(syst) and a flux normalization at 200 GeV of (5.1 +/- 0.9(stat) +/- 0.5(syst)) x 10(-11) TeV-1 cm(-2) s(-1), where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. Using the photon index measured with Fermi in combination with recent extragalactic background light absorption models it can be concluded from the VERITAS data that the redshift of PKS 1424+240 is less than 0.66.
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Aliu, E.
(author)
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Arlen, T.
(author)
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Aune, T.
(author)
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Bautista, M.
(author)
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Beilicke, M.
(author)
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Benbow, W.
(author)
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Boettcher, M.
(author)
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Boltuch, D.
(author)
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Bradbury, S. M.
(author)
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Buckley, J. H.
(author)
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Bugaev, V.
(author)
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Byrum, K.
(author)
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Cannon, A.
(author)
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Cesarini, A.
(author)
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Chow, Y. C.
(author)
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Ciupik, L.
(author)
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Cogan, P.
(author)
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Cui, W.
(author)
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Duke, C.
(author)
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Falcone, A.
(author)
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Finley, J. P.
(author)
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Finnegan, G.
(author)
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Fortson, L.
(author)
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Furniss, A.
(author)
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Galante, N.
(author)
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Gall, D.
(author)
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Gillanders, G. H.
(author)
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Godambe, S.
(author)
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Grube, J.
(author)
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Guenette, R.
(author)
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Gyuk, G.
(author)
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Hanna, D.
(author)
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Holder, J.
(author)
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Hui, C. M.
(author)
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Humensky, T. B.
(author)
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Kaaret, P.
(author)
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Karlsson, N.
(author)
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Kertzman, M.
(author)
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Kieda, D.
(author)
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Konopelko, A.
(author)
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Krawczynski, H.
(author)
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Krennrich, F.
(author)
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Lang, M. J.
(author)
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LeBohec, S.
(author)
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Maier, G.
(author)
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McArthur, S.
(author)
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McCann, A.
(author)
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McCutcheon, M.
(author)
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Millis, J.
(author)
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Moriarty, P.
(author)
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Nagai, T.
(author)
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Ong, R. A.
(author)
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Otte, A. N.
(author)
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Pandel, D.
(author)
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Perkins, J. S.
(author)
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Pichel, A.
(author)
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Pohl, M.
(author)
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Quinn, J.
(author)
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Ragan, K.
(author)
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Reyes, L. C.
(author)
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Reynolds, P. T.
(author)
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Roache, E.
(author)
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Rose, H. J.
(author)
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Schroedter, M.
(author)
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Sembroski, G. H.
(author)
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Senturk, G. Demet
(author)
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Smith, A. W.
(author)
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Steele, D.
(author)
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Swordy, S. P.
(author)
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Theiling, M.
(author)
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Thibadeau, S.
(author)
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Varlotta, A.
(author)
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Vassiliev, V. V.
(author)
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Vincent, S.
(author)
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Wagner, R. G.
(author)
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Wakely, S. P.
(author)
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Ward, J. E.
(author)
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Weekes, T. C.
(author)
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Weinstein, A.
(author)
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Weisgarber, T.
(author)
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Williams, D. A.
(author)
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Wissel, S.
(author)
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Wood, M.
(author)
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Zitzer, B.
(author)
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Abdo, A. A.
(author)
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Ackermann, M.
(author)
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Ajello, M.
(author)
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Baldini, L.
(author)
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Ballet, J.
(author)
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Barbiellini, G.
(author)
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Bastieri, D.
(author)
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Baughman, B. M.
(author)
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Bechtol, K.
(author)
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Bellazzini, R.
(author)
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Berenji, B.
(author)
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Blandford, R. D.
(author)
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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.
(author)
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Brez, A.
(author)
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Brigida, M.
(author)
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Bruel, P.
(author)
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Burnett, T. H.
(author)
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Caliandro, G. A.
(author)
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Cameron, R. A.
(author)
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Caraveo, P. A.
(author)
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Casandjian, J. M.
(author)
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Cavazzuti, E.
(author)
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Cecchi, C.
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Celik, Oe
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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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Conrad, J.
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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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do Couto e Silva, E.
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Drell, P. S.
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Drlica-Wagner, A.
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Dubois, R.
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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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Fusco, P.
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Gargano, F.
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Gasparrini, D.
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Gehrels, N.
(author)
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Germani, S.
(author)
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Giebels, B.
(author)
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Giglietto, N.
(author)
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Giommi, P.
(author)
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Giordano, F.
(author)
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Glanzman, T.
(author)
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Godfrey, G.
(author)
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Grenier, I. A.
(author)
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Grove, J. E.
(author)
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Guillemot, L.
(author)
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Guiriec, S.
(author)
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Hanabata, Y.
(author)
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Hays, E.
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Hughes, R. E.
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Jackson, MirandaKTH,Partikel- och astropartikelfysik(Swepub:kth)u1k3ikhm
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Johannesson, G.
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Johnson, A. S.
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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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Knoedlseder, J.
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Kocian, M. L.
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Kuss, M.
(author)
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Lande, J.
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Latronico, L.
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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.
(author)
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Lubrano, P.
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Madejski, G. M.
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Makeev, A.
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Mazziotta, M. N.
(author)
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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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Paneque, D.
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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.
(author)
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Porter, T. A.
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Raino, S.
(author)
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Rando, R.
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Razzano, M.
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Reimer, A.
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Reimer, O.
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Reposeur, T.
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Rodriguez, A. Y.
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Ryde, FelixKTH,Partikel- och astropartikelfysik(Swepub:kth)u1tlyg6w
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Sadrozinski, H. F. -W
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Sanchez, D.
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Sander, A.
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Parkinson, P. M. Saz
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Scargle, J. D.
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Sgro, C.
(author)
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Shaw, M. S.
(author)
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Siskind, E. J.
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Smith, P. D.
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Spandre, G.
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Spinelli, P.
(author)
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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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Tanaka, T.
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Thayer, J. B.
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Thayer, J. G.
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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.
(author)
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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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Vilchez, N.
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Vitale, V.
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Waite, A. P.
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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, TomiKTH,Partikel- och astropartikelfysik(Swepub:kth)u1vmovqg
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Ziegler, M.
(author)
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Barber, S. D.
(author)
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Terndrup, D. M.
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In:ASTROPHYSICAL JOURNAL LETTERS708:2, s. L100-L1062041-8205
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Acciari, V. A.
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Aliu, E.
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Arlen, T.
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Aune, T.
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Bautista, M.
-
Beilicke, M.
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Benbow, W.
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Boettcher, M.
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Boltuch, D.
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Bradbury, S. M.
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Buckley, J. H.
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Bugaev, V.
-
Byrum, K.
-
Cannon, A.
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Cesarini, A.
-
Chow, Y. C.
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Ciupik, L.
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Cogan, P.
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Cui, W.
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Duke, C.
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Falcone, A.
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Finley, J. P.
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Finnegan, G.
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Fortson, L.
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Furniss, A.
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Galante, N.
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Gall, D.
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Gillanders, G. H ...
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Godambe, S.
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Grube, J.
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Guenette, R.
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Gyuk, G.
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Hanna, D.
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Holder, J.
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Hui, C. M.
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Humensky, T. B.
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Kaaret, P.
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Karlsson, N.
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Kertzman, M.
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Kieda, D.
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Konopelko, A.
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Krawczynski, H.
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Krennrich, F.
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Lang, M. J.
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LeBohec, S.
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Maier, G.
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McArthur, S.
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McCann, A.
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McCutcheon, M.
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Millis, J.
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Moriarty, P.
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Nagai, T.
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Ong, R. A.
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Otte, A. N.
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Pandel, D.
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Perkins, J. S.
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Pichel, A.
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Pohl, M.
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Quinn, J.
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Ragan, K.
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Reyes, L. C.
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Reynolds, P. T.
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Roache, E.
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Rose, H. J.
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Schroedter, M.
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Sembroski, G. H.
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Senturk, G. Deme ...
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Smith, A. W.
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Steele, D.
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Swordy, S. P.
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Theiling, M.
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Thibadeau, S.
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Varlotta, A.
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Vassiliev, V. V.
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Vincent, S.
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Wagner, R. G.
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Wakely, S. P.
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Ward, J. E.
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Weekes, T. C.
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Weinstein, A.
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Weisgarber, T.
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Williams, D. A.
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Wissel, S.
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Wood, M.
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Zitzer, B.
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Abdo, A. A.
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Ackermann, M.
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Ajello, 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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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.
-
Cecchi, C.
-
Celik, Oe
-
Chekhtman, A.
-
Cheung, C. C.
-
Chiang, J.
-
Ciprini, S.
-
Claus, R.
-
Cohen-Tanugi, J.
-
Conrad, J.
-
Cutini, S.
-
Dermer, C. D.
-
de Angelis, A.
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de Palma, F.
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do Couto e Silva ...
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Drell, P. S.
-
Drlica-Wagner, A ...
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Dubois, R.
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Dumora, D.
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Farnier, C.
-
Favuzzi, C.
-
Fegan, S. J.
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Focke, W. B.
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Fortin, P.
-
Frailis, M.
-
Fukazawa, Y.
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Fusco, P.
-
Gargano, F.
-
Gasparrini, D.
-
Gehrels, N.
-
Germani, S.
-
Giebels, B.
-
Giglietto, N.
-
Giommi, P.
-
Giordano, F.
-
Glanzman, T.
-
Godfrey, G.
-
Grenier, I. A.
-
Grove, J. E.
-
Guillemot, L.
-
Guiriec, S.
-
Hanabata, Y.
-
Hays, E.
-
Hughes, R. E.
-
Jackson, Miranda
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Johannesson, G.
-
Johnson, A. S.
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Johnson, W. N.
-
Kamae, T.
-
Katagiri, H.
-
Kataoka, J.
-
Kawai, N.
-
Kerr, M.
-
Knoedlseder, J.
-
Kocian, M. L.
-
Kuss, M.
-
Lande, J.
-
Latronico, L.
-
Longo, F.
-
Loparco, F.
-
Lott, B.
-
Lovellette, M. N ...
-
Lubrano, P.
-
Madejski, G. M.
-
Makeev, A.
-
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.
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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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Paneque, D.
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Parent, D.
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Pelassa, V.
-
Pepe, M.
-
Pesce-Rollins, M ...
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Piron, F.
-
Porter, T. A.
-
Raino, S.
-
Rando, R.
-
Razzano, M.
-
Reimer, A.
-
Reimer, O.
-
Reposeur, T.
-
Rodriguez, A. Y.
-
Roth, M.
-
Ryde, Felix
-
Sadrozinski, H. ...
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Sanchez, D.
-
Sander, A.
-
Parkinson, P. M. ...
-
Scargle, J. D.
-
Sgro, C.
-
Shaw, M. S.
-
Siskind, E. J.
-
Smith, P. D.
-
Spandre, G.
-
Spinelli, P.
-
Strickman, M. S.
-
Suson, D. J.
-
Tajima, H.
-
Takahashi, H.
-
Tanaka, T.
-
Thayer, J. B.
-
Thayer, J. G.
-
Thompson, D. J.
-
Tibaldo, L.
-
Torres, D. F.
-
Tosti, G.
-
Tramacere, A.
-
Uchiyama, Y.
-
Usher, T. L.
-
Vasileiou, V.
-
Vilchez, N.
-
Vitale, V.
-
Waite, A. P.
-
Wang, P.
-
Winer, B. L.
-
Wood, K. S.
-
Ylinen, Tomi
-
Ziegler, M.
-
Barber, S. D.
-
Terndrup, D. M.
-
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