%0 Journal Article
%T Fermi LARGE AREA TELESCOPE OBSERVATIONS OF BLAZAR 3C 279 OCCULTATIONS BY THE SUN
%+ Laboratoire Leprince-Ringuet (LLR)
%+ Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
%+ Institut de recherche en astrophysique et planétologie (IRAP)
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%A Barbiellini, G.
%A Bastieri, D.
%A Bechtol, K.
%A Bellazzini, R.
%A Blandford, R.D.
%A Borgland, A.W.
%A Bregeon, J.
%A Bruel, P.
%A Buehler, R.
%A Buson, S.
%A Caliandro, G.A.
%A Cameron, R.A.
%A Caraveo, P.A.
%A Cavazzuti, E.
%A Cecchi, C.
%A Chaves, R.C.G.
%A Chekhtman, A.
%A Cheung, C.C.
%A Chiang, J.
%A Ciprini, S.
%A Claus, R.
%A Cohen-Tanugi, J.
%A d'Ammando, F.
%A de Angelis, A.
%A Dermer, C.D.
%A Digel, S.W.
%A Couto E Silva, E.
%A Drell, P.S.
%A Drlica-Wagner, A.
%A Favuzzi, C.
%A Focke, W.B.
%A Franckowiak, A.
%A Fukazawa, Y.
%A Fusco, P.
%A Gargano, F.
%A Gasparrini, D.
%A Germani, S.
%A Giglietto, N.
%A Giommi, P.
%A Giordano, F.
%A Giroletti, M.
%A Glanzman, T.
%A Godfrey, G.
%A Grenier, I.A.
%A Grove, J.E.
%A Guiriec, S.
%A Hadasch, D.
%A Hayashida, M.
%A Hays, E.
%A Hughes, R.E.
%A Jackson, M.S.
%A Jogler, T.
%A Knödlseder, Jürgen
%A Kuss, M.
%A Lande, J.
%A Larsson, S.
%A Longo, F.
%A Loparco, F.
%A Lovellette, M.N.
%A Lubrano, P.
%A Mazziotta, M.N.
%A Mehault, J.
%A Michelson, P.F.
%A Mizuno, T.
%A Moiseev, A.A.
%A Monte, C.
%A Monzani, M.E.
%A Morselli, A.
%A Moskalenko, I.V.
%A Murgia, S.
%A Nemmen, R.
%A Nuss, E.
%A Ohsugi, T.
%A Omodei, N.
%A Orienti, M.
%A Orlando, E.
%A Paneque, D.
%A Perkins, J.S.
%A Piron, F.
%A Pivato, G.
%A Prokhorov, D.
%A Rainò, S.
%A Razzano, M.
%A Razzaque, S.
%A Reimer, A.
%A Reimer, O.
%A Ritz, S.
%A Romoli, C.
%A Sánchez-Conde, M.
%A Sanchez, D.A.
%A Sgrò, C.
%A Siskind, E.J.
%A Spandre, G.
%A Spinelli, P.
%A Takahashi, H.
%A Tanaka, T.
%A Tibaldo, L.
%A Tinivella, M.
%A Tosti, G.
%A Troja, E.
%A Usher, T.L.
%A Vandenbroucke, J.
%A Vasileiou, V.
%A Vianello, G.
%A Vitale, V.
%A Waite, A.P.
%A Winer, B.L.
%A Wood, K.S.
%A Yang, Z.
%< avec comité de lecture
%J Astrophys.J.
%V 784
%N 2
%P 118
%8 2014
%D 2014
%R 10.1088/0004-637X/784/2/118
%Z Physics [physics]/Astrophysics [astro-ph]Journal articles
%X Observations of occultations of bright γ-ray sources by the Sun may reveal predicted pair halos around blazars and/or new physics, such as, e.g., hypothetical light dark matter particles—axions. We useFermi Gamma-Ray Space Telescope(Fermi) data to analyze four occultations of blazar 3C 279 by the Sun on October 8 each year from 2008 to 2011. A combined analysis of the observations of these occultations allows a point-like source at the position of 3C 279 to be detected with significance of ≈3σ, but does not reveal any significant excess over the flux expected from the quiescent Sun. The likelihood ratio test rules out complete transparency of the Sun to the blazar γ-ray emission at a 3σ confidence level.
%G English
%L hal-02017415
%U https://hal.science/hal-02017415
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