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000 | 08506naa a2202353 4500 | |
001 | oai:DiVA.org:kth-27097 | |
003 | SwePub | |
008 | 101206s2010 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-270972 URI |
024 | 7 | a https://doi.org/10.1088/0004-637X/723/1/6492 DOI |
040 | a (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Abdo, A. A.4 aut |
245 | 1 0 | a Fermi large area telescope observation of a gamma-ray source at the position of Eta Carinae |
264 | 1 | c 2010 |
338 | a print2 rdacarrier | |
500 | a QC 20101209 | |
520 | a The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope detected a gamma-ray source that is spatially consistent with the location of Eta Carinae. This source has been persistently bright since the beginning of the LAT survey observations (from 2008 August to 2009 July, the time interval considered here). The gamma-ray signal is detected significantly throughout the LAT energy band (i.e., up to similar to 100 GeV). The 0.1-100 GeV energy spectrum is well represented by a combination of a cutoff power-law model (<10 GeV) and a hard power-law component (>10 GeV). The total flux (>100 MeV) is 3.7(-0.1)(+0.3) x 10(-7) photons s(-1) cm(-2), with additional systematic uncertainties of 10%, and consistent with the average flux measured by AGILE. The light curve obtained by Fermi is consistent with steady emission. Our observations do not confirm the presence of a gamma-ray flare in 2008 October, as reported by Tavani et al., although we cannot exclude that a flare lasting only a few hours escaped detection by the Fermi LAT. We also do not find any evidence for gamma-ray variability that correlates with the large X-ray variability of Eta Carinae observed during 2008 December and 2009 January. We are thus not able to establish an unambiguous identification of the LAT source with Eta Carinae. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a binaries: general | |
653 | a stars: individual (Eta Carinae) | |
653 | a supergiants | |
653 | a Astronomy and astrophysics | |
653 | a Astronomi och astrofysik | |
700 | 1 | a Ackermann, M.4 aut |
700 | 1 | a Ajello, M.4 aut |
700 | 1 | a Allafort, A.4 aut |
700 | 1 | a Baldini, L.4 aut |
700 | 1 | a Ballet, J.4 aut |
700 | 1 | a Barbiellini, G.4 aut |
700 | 1 | a Bastieri, D.4 aut |
700 | 1 | a Bechtol, K.4 aut |
700 | 1 | a Bellazzini, R.4 aut |
700 | 1 | a Berenji, B.4 aut |
700 | 1 | a Blandford, R. D.4 aut |
700 | 1 | a Bonamente, E.4 aut |
700 | 1 | a Borgland, A. W.4 aut |
700 | 1 | a Bouvier, A.4 aut |
700 | 1 | a Brandt, T. J.4 aut |
700 | 1 | a Bregeon, J.4 aut |
700 | 1 | a Brez, A.4 aut |
700 | 1 | a Brigida, M.4 aut |
700 | 1 | a Bruel, P.4 aut |
700 | 1 | a Buehler, R.4 aut |
700 | 1 | a Burnett, T. H.4 aut |
700 | 1 | a Caliandro, G. A.4 aut |
700 | 1 | a Cameron, R. A.4 aut |
700 | 1 | a Caraveo, P. A.4 aut |
700 | 1 | a Carrigan, S.4 aut |
700 | 1 | a Casandjian, J. M.4 aut |
700 | 1 | a Cecchi, C.4 aut |
700 | 1 | a Celik, Oe4 aut |
700 | 1 | a Chaty, S.4 aut |
700 | 1 | a Chekhtman, A.4 aut |
700 | 1 | a Cheung, C. C.4 aut |
700 | 1 | a Chiang, J.4 aut |
700 | 1 | a Ciprini, S.4 aut |
700 | 1 | a Claus, R.4 aut |
700 | 1 | a Cohen-Tanugi, J.4 aut |
700 | 1 | a Cominsky, L. R.4 aut |
700 | 1 | a Conrad, J.4 aut |
700 | 1 | a Dermer, C. D.4 aut |
700 | 1 | a de Palma, F.4 aut |
700 | 1 | a Digel, S. W.4 aut |
700 | 1 | a do Couto e Silva, E.4 aut |
700 | 1 | a Drell, P. S.4 aut |
700 | 1 | a Dubois, R.4 aut |
700 | 1 | a Dumora, D.4 aut |
700 | 1 | a Favuzzi, C.4 aut |
700 | 1 | a Fegan, S. J.4 aut |
700 | 1 | a Ferrara, E. C.4 aut |
700 | 1 | a Frailis, M.4 aut |
700 | 1 | a Fukazawa, Y.4 aut |
700 | 1 | a Fusco, P.4 aut |
700 | 1 | a Gargano, F.4 aut |
700 | 1 | a Gehrels, N.4 aut |
700 | 1 | a Germani, S.4 aut |
700 | 1 | a Giglietto, N.4 aut |
700 | 1 | a Giordano, F.4 aut |
700 | 1 | a Godfrey, G.4 aut |
700 | 1 | a Grenier, I. A.4 aut |
700 | 1 | a Grondin, M. -H4 aut |
700 | 1 | a Grove, J. E.4 aut |
700 | 1 | a Guillemot, L.4 aut |
700 | 1 | a Guiriec, S.4 aut |
700 | 1 | a Hadasch, D.4 aut |
700 | 1 | a Hanabata, Y.4 aut |
700 | 1 | a Harding, A. K.4 aut |
700 | 1 | a Hayashida, M.4 aut |
700 | 1 | a Hays, E.4 aut |
700 | 1 | a Hill, A. B.4 aut |
700 | 1 | a Horan, D.4 aut |
700 | 1 | a Hughes, R. E.4 aut |
700 | 1 | a Itoh, R.4 aut |
700 | 1 | a Jackson, Mirandau KTH,Partikel- och astropartikelfysik4 aut0 (Swepub:kth)u1k3ikhm |
700 | 1 | a Johannesson, G.4 aut |
700 | 1 | a Johnson, A. S.4 aut |
700 | 1 | a Johnson, W. N.4 aut |
700 | 1 | a Kamae, T.4 aut |
700 | 1 | a Katagiri, H.4 aut |
700 | 1 | a Kataoka, J.4 aut |
700 | 1 | a Kerr, M.4 aut |
700 | 1 | a Knoedlseder, J.4 aut |
700 | 1 | a Kuss, M.4 aut |
700 | 1 | a Lande, J.4 aut |
700 | 1 | a Latronico, L.4 aut |
700 | 1 | a Lee, S. -H4 aut |
700 | 1 | a Lemoine-Goumard, M.4 aut |
700 | 1 | a Livingstone, M.4 aut |
700 | 1 | a Garde, M. Llena4 aut |
700 | 1 | a Longo, F.4 aut |
700 | 1 | a Loparco, F.4 aut |
700 | 1 | a Lovellette, M. N.4 aut |
700 | 1 | a Lubrano, P.4 aut |
700 | 1 | a Makeev, A.4 aut |
700 | 1 | a Mazziotta, M. N.4 aut |
700 | 1 | a McEnery, J. E.4 aut |
700 | 1 | a Mehault, J.4 aut |
700 | 1 | a Michelson, P. F.4 aut |
700 | 1 | a Mitthumsiri, W.4 aut |
700 | 1 | a Mizuno, T.4 aut |
700 | 1 | a Moiseev, A. A.4 aut |
700 | 1 | a Monte, C.4 aut |
700 | 1 | a Monzani, M. E.4 aut |
700 | 1 | a Morselli, A.4 aut |
700 | 1 | a Moskalenko, I. V.4 aut |
700 | 1 | a Murgia, S.4 aut |
700 | 1 | a Nakamori, T.4 aut |
700 | 1 | a Naumann-Godo, M.4 aut |
700 | 1 | a Nolan, P. L.4 aut |
700 | 1 | a Norris, J. P.4 aut |
700 | 1 | a Nuss, E.4 aut |
700 | 1 | a Ohsugi, T.4 aut |
700 | 1 | a Okumura, A.4 aut |
700 | 1 | a Omodei, N.4 aut |
700 | 1 | a Orlando, E.4 aut |
700 | 1 | a Ormes, J. F.4 aut |
700 | 1 | a Ozaki, M.4 aut |
700 | 1 | a Panetta, J. H.4 aut |
700 | 1 | a Parent, D.4 aut |
700 | 1 | a Pelassa, V.4 aut |
700 | 1 | a Pepe, M.4 aut |
700 | 1 | a Pesce-Rollins, M.4 aut |
700 | 1 | a Piron, F.4 aut |
700 | 1 | a Porter, T. A.4 aut |
700 | 1 | a Raino, S.4 aut |
700 | 1 | a Rando, R.4 aut |
700 | 1 | a Razzano, M.4 aut |
700 | 1 | a Reimer, A.4 aut |
700 | 1 | a Reimer, O.4 aut |
700 | 1 | a Reposeur, T.4 aut |
700 | 1 | a Rodriguez, A. Y.4 aut |
700 | 1 | a Romani, R. W.4 aut |
700 | 1 | a Roth, M.4 aut |
700 | 1 | a Sadrozinski, H. F. -W4 aut |
700 | 1 | a Sander, A.4 aut |
700 | 1 | a Parkinson, P. M. Saz4 aut |
700 | 1 | a Scargle, J. D.4 aut |
700 | 1 | a Sgro, C.4 aut |
700 | 1 | a Siskind, E. J.4 aut |
700 | 1 | a Smith, D. A.4 aut |
700 | 1 | a Smith, P. D.4 aut |
700 | 1 | a Spandre, G.4 aut |
700 | 1 | a Spinelli, P.4 aut |
700 | 1 | a Strickman, M. S.4 aut |
700 | 1 | a Suson, D. J.4 aut |
700 | 1 | a Takahashi, H.4 aut |
700 | 1 | a Takahashi, T.4 aut |
700 | 1 | a Tanaka, T.4 aut |
700 | 1 | a Thayer, J. B.4 aut |
700 | 1 | a Thayer, J. G.4 aut |
700 | 1 | a Thompson, D. J.4 aut |
700 | 1 | a Tibaldo, L.4 aut |
700 | 1 | a Tibolla, O.4 aut |
700 | 1 | a Torres, D. F.4 aut |
700 | 1 | a Tosti, G.4 aut |
700 | 1 | a Tramacere, A.4 aut |
700 | 1 | a Uchiyama, Y.4 aut |
700 | 1 | a Usher, T. L.4 aut |
700 | 1 | a Vandenbroucke, J.4 aut |
700 | 1 | a Vasileiou, V.4 aut |
700 | 1 | a Vilchez, N.4 aut |
700 | 1 | a Vitale, V.4 aut |
700 | 1 | a Waite, A. P.4 aut |
700 | 1 | a Wallace, E.4 aut |
700 | 1 | a Wang, P.4 aut |
700 | 1 | a Winer, B. L.4 aut |
700 | 1 | a Wood, K. S.4 aut |
700 | 1 | a Yang, Z.4 aut |
700 | 1 | a Ylinen, Tomiu KTH,Partikel- och astropartikelfysik4 aut0 (Swepub:kth)u1vmovqg |
700 | 1 | a Ziegler, M.4 aut |
710 | 2 | a KTHb Partikel- och astropartikelfysik4 org |
773 | 0 | t Astrophysical Journalg 723:1, s. 649-657q 723:1<649-657x 0004-637Xx 1538-4357 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-27097 |
856 | 4 8 | u https://doi.org/10.1088/0004-637X/723/1/649 |
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