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Fermi Large Area Te...
Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87
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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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show more...
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Atwood, W. B. (author)
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- Axelsson, M. (author)
- Stockholms universitet,Institutionen för astronomi
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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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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. (author)
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Bonamente, E. (author)
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Borgland, A. W. (author)
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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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Cannon, 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. (author)
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Çelik, Ö. (author)
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Charles, E. (author)
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Cheung, C. C. (author)
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Chiang, J. (author)
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Ciprini, S. (author)
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Claus, R. (author)
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Cohen-Tanugi, J. (author)
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Colafrancesco, S. (author)
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- Conrad, J. (author)
- Stockholms universitet,Fysikum
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Costamante, L. (author)
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Cutini, S. (author)
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Davis, D. S. (author)
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Dermer, C. D. (author)
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de Angelis, A. (author)
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de Palma, F. (author)
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Digel, S. W. (author)
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Donato, D. (author)
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Silva, E. do Couto e. (author)
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Drell, P. S. (author)
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Dubois, R. (author)
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Dumora, D. (author)
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Edmonds, Y. (author)
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Farnier, C. (author)
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Favuzzi, C. (author)
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Fegan, S. J. (author)
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Finke, J. (author)
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Focke, W. B. (author)
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Fortin, P. (author)
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Frailis, M. (author)
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Fukazawa, Y. (author)
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Funk, S. (author)
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Fusco, P. (author)
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Gargano, F. (author)
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Gasparrini, D. (author)
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Gehrels, N. (author)
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Georganopoulos, M. (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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Giroletti, M. (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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Grondin, M.-H. (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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Harding, A. K. (author)
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Hayashida, M. (author)
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Hays, E. (author)
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Horan, D. (author)
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Jóhannesson, G. (author)
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Johnson, A. S. (author)
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Johnson, R. P. (author)
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Johnson, T. J. (author)
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Johnson, W. N. (author)
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Kamae, T. (author)
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Katagiri, H. (author)
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Kataoka, J. (author)
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Kawai, N. (author)
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Kerr, M. (author)
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Knödlseder, J. (author)
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Kocian, M. L. (author)
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Kuss, M. (author)
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Lande, J. (author)
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Latronico, L. (author)
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Lemoine-Goumard, M. (author)
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Longo, F. (author)
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Loparco, F. (author)
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Lott, B. (author)
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Lovellette, M. N. (author)
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Lubrano, P. (author)
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Madejski, G. M. (author)
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Makeev, A. (author)
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Mazziotta, M. N. (author)
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McConville, W. (author)
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McEnery, J. E. (author)
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Meurer, C. (author)
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Michelson, P. F. (author)
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Mitthumsiri, W. (author)
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Mizuno, T. (author)
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Moiseev, A. A. (author)
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Monte, C. (author)
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Monzani, M. E. (author)
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Morselli, A. (author)
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Moskalenko, I. V. (author)
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Murgia, S. (author)
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Nolan, P. L. (author)
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Norris, J. P. (author)
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Nuss, E. (author)
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Ohsugi, T. (author)
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Omodei, N. (author)
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Orlando, E. (author)
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Ormes, J. F. (author)
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Ozaki, M. (author)
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Paneque, D. (author)
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Panetta, J. H. (author)
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Parent, D. (author)
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Pelassa, V. (author)
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Pepe, M. (author)
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Pesce-Rollins, M. (author)
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Piron, F. (author)
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Porter, T. A. (author)
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Rainò, S. (author)
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Rando, R. (author)
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Razzano, M. (author)
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Reimer, A. (author)
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Reimer, O. (author)
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Reposeur, T. (author)
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Ritz, S. (author)
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Rochester, L. S. (author)
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Rodriguez, A. Y. (author)
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Romani, R. W. (author)
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Roth, M. (author)
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Ryde, F. (author)
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Sadrozinski, H. F.-W. (author)
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Sambruna, R. (author)
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Sanchez, D. (author)
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Sander, A. (author)
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Saz Parkinson, P. M. (author)
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Scargle, J. D. (author)
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Sgrò, C. (author)
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Shaw, M. S. (author)
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Smith, D. A. (author)
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Smith, P. D. (author)
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Spandre, G. (author)
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Spinelli, P. (author)
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Strickman, M. S. (author)
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Suson, D. J. (author)
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Tajima, H. (author)
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Takahashi, H. (author)
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- Ylinen, T. (author)
- Högskolan i Kalmar,Naturvetenskapliga institutionen
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Taylor, G. B. (author)
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Thayer, J. B. (author)
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Thompson, D. J. (author)
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Tibaldo, L. (author)
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Torres, D. F. (author)
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Tosti, G. (author)
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Tramacere, A. (author)
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Uchiyama, Y. (author)
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Usher, T. L. (author)
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Vasileiou, V. (author)
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Vilchez, N. (author)
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Waite, A. P. (author)
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Wang, P. (author)
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Winer, B. L. (author)
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Wood, K. S. (author)
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Ylinen, T. (author)
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Ziegler, M. (author)
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Harris, D. E. (author)
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Massaro, F. (author)
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Stawarz, Ł. (author)
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 707:1, s. 55-60
- Related links:
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https://urn.kb.se/re...
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show more...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- We report the Fermi Large Area Telescope (LAT) discovery of high-energy (MeV/GeV) γ-ray emission positionally consistent with the center of the radio galaxy M87, at a source significance of over 10σ in 10 months of all-sky survey data. Following the detections of Cen A and Per A, this makes M87 the third radio galaxy seen with the LAT. The faint point-like γ-ray source has a >100 MeV flux of 2.45 (±0.63) × 10–8 photons cm–2 s–1 (photon index = 2.26 ± 0.13) with no significant variability detected within the LAT observation. This flux is comparable with the previous EGRET upper limit (<2.18 × 10–8 photons cm–2 s–1, 2σ), thus there is no evidence for a significant MeV/GeV flare on decade timescales. Contemporaneous Chandra and Very Long Baseline Array data indicate low activity in the unresolved X-ray and radio core relative to previous observations, suggesting M87 is in a quiescent overall level over the first year of Fermi-LAT observations. The LAT γ-ray spectrum is modeled as synchrotron self-Compton (SSC) emission from the electron population producing the radio-to-X-ray emission in the core. The resultant SSC spectrum extrapolates smoothly from the LAT band to the historical-minimum TeV emission. Alternative models for the core and possible contributions from the kiloparsec-scale jet in M87 are considered, and cannot be excluded.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- galaxies: active
- galaxies: individual: M87
- galaxies: jets
- gamma rays: observations
- radiation mechanisms: non-thermal
- High energy astrophysics
- Högenergiastrofysik
- High energy astrophysics
- Högenergiastrofysik
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Abdo, A. A.
-
Ackermann, M.
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Ajello, M.
-
Atwood, W. B.
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Axelsson, M.
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Baldini, L.
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show more...
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Ballet, J.
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Barbiellini, G.
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Bastieri, D.
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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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Cannon, 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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Charles, E.
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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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Colafrancesco, S ...
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Conrad, J.
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Costamante, L.
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Cutini, S.
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Davis, D. 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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Donato, D.
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Silva, E. do Cou ...
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Drell, P. S.
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Dubois, R.
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Dumora, D.
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Edmonds, Y.
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Farnier, C.
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Favuzzi, C.
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Fegan, S. J.
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Finke, 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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Georganopoulos, ...
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Germani, S.
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Giebels, B.
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Giglietto, N.
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Giommi, P.
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Giordano, F.
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Giroletti, M.
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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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Horan, D.
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Jóhannesson, G.
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Johnson, A. S.
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Johnson, R. P.
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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.
-
Knödlseder, J.
-
Kocian, M. L.
-
Kuss, M.
-
Lande, J.
-
Latronico, L.
-
Lemoine-Goumard, ...
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Longo, F.
-
Loparco, F.
-
Lott, B.
-
Lovellette, M. N ...
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Lubrano, P.
-
Madejski, G. M.
-
Makeev, A.
-
Mazziotta, M. N.
-
McConville, W.
-
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 ...
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Murgia, S.
-
Nolan, P. L.
-
Norris, J. P.
-
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.
-
Ozaki, M.
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Paneque, D.
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Panetta, J. H.
-
Parent, D.
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Pelassa, V.
-
Pepe, M.
-
Pesce-Rollins, M ...
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Piron, F.
-
Porter, T. A.
-
Rainò, S.
-
Rando, R.
-
Razzano, M.
-
Reimer, A.
-
Reimer, O.
-
Reposeur, T.
-
Ritz, S.
-
Rochester, L. S.
-
Rodriguez, A. Y.
-
Romani, R. W.
-
Roth, M.
-
Ryde, F.
-
Sadrozinski, H. ...
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Sambruna, R.
-
Sanchez, D.
-
Sander, A.
-
Saz Parkinson, P ...
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Scargle, J. D.
-
Sgrò, C.
-
Shaw, M. S.
-
Smith, D. A.
-
Smith, P. D.
-
Spandre, G.
-
Spinelli, P.
-
Strickman, M. S.
-
Suson, D. J.
-
Tajima, H.
-
Takahashi, H.
-
Ylinen, T.
-
Taylor, G. B.
-
Thayer, J. B.
-
Thompson, D. J.
-
Tibaldo, L.
-
Torres, D. F.
-
Tosti, G.
-
Tramacere, A.
-
Uchiyama, Y.
-
Usher, T. L.
-
Vasileiou, V.
-
Vilchez, N.
-
Waite, A. P.
-
Wang, P.
-
Winer, B. L.
-
Wood, K. S.
-
Ziegler, M.
-
Harris, D. E.
-
Massaro, F.
-
Stawarz, Ł.
-
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- NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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and Physical Science ...
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- By the university
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Stockholm University
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Linnaeus University