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Inferred Cosmic-Ray Spectrum from Fermi Large Area Telescope gamma-Ray Observations of Earth's Limb
- Ackermann, M. (author)
- Ajello, M. (author)
- Albert, A. (author)
- show more...
- Allafort, A. (author)
- Baldini, L. (author)
- Barbiellini, G. (author)
- Bastieri, D. (author)
- Bechtol, K. (author)
- Bellazzini, R. (author)
- Blandford, R. D. (author)
- Bloom, E. D. (author)
- Bonamente, E. (author)
- Bottacini, E. (author)
- Bouvier, A. (author)
- Brandt, T. J. (author)
- Brigida, M. (author)
- Bruel, P. (author)
- Buehler, R. (author)
- Buson, S. (author)
- Caliandro, G. A. (author)
- Cameron, R. A. (author)
- Caraveo, P. A. (author)
- Cecchi, C. (author)
- Charles, E. (author)
- Chaves, R. C. G. (author)
- Chekhtman, A. (author)
- Chiang, J. (author)
- Chiaro, G. (author)
- Ciprini, S. (author)
- Claus, R. (author)
- Cohen-Tanugi, J. (author)
- Cutini, S. (author)
- Dalton, M. (author)
- D'Ammando, F. (author)
- de Angelis, A. (author)
- de Palma, F. (author)
- Dermer, C. D. (author)
- Digel, S. W. (author)
- Di Venere, L. (author)
- do Couto e Silva, E. (author)
- Drell, P. S. (author)
- Drlica-Wagner, A. (author)
- Favuzzi, C. (author)
- Fegan, S. J. (author)
- Ferrara, E. C. (author)
- Focke, W. B. (author)
- Franckowiak, A. (author)
- Fukazawa, Y. (author)
- Funk, S. (author)
- Fusco, P. (author)
- Gargano, F. (author)
- Gasparrini, D. (author)
- Germani, S. (author)
- Giglietto, N. (author)
- Giordano, F. (author)
- Giroletti, M. (author)
- Glanzman, T. (author)
- Godfrey, G. (author)
- Gomez-Vargas, G. A. (author)
- Grenier, I. A. (author)
- Grove, J. E. (author)
- Guiriec, S. (author)
- Gustafsson, M. (author)
- Hadasch, D. (author)
- Hanabata, Y. (author)
- Harding, A. K. (author)
- Hayashida, M. (author)
- Hayashi, K. (author)
- Hewitt, J. W. (author)
- Horan, D. (author)
- Hou, X. (author)
- Hughes, R. E. (author)
- Inoue, Y. (author)
- Jogler, T. (author)
- Johannesson, G. (author)
- Johnson, A. S. (author)
- Kamae, T. (author)
- Kawano, T. (author)
- Knoedlseder, J. (author)
- Kuss, M. (author)
- Lande, J. (author)
- Latronico, L. (author)
- Longo, F. (author)
- Loparco, F. (author)
- Lovellette, M. N. (author)
- Lubrano, P. (author)
- Mayer, M. (author)
- Mazziotta, M. N. (author)
- McEnery, J. E. (author)
- Mehault, J. (author)
- Michelson, P. F. (author)
- Mitthumsiri, W. (author)
- Mizuno, T. (author)
- Moiseev, A. A. (author)
- Monte, C. (author)
- Monzani, M. E. (author)
- Morselli, A. (author)
- Moskalenko, I. V. (author)
- Murgia, S. (author)
- Nemmen, R. (author)
- Nuss, E. (author)
- Ohsugi, T. (author)
- Okumura, A. (author)
- Orienti, M. (author)
- Orlando, E. (author)
- Ormes, J. F. (author)
- Paneque, D. (author)
- Panetta, J. H. (author)
- Perkins, J. S. (author)
- Pesce-Rollins, M. (author)
- Piron, F. (author)
- Pivato, G. (author)
- Porter, T. A. (author)
- Raino, S. (author)
- Rando, R. (author)
- Razzano, M. (author)
- Razzaque, S. (author)
- Reimer, A. (author)
- Reimer, O. (author)
- Ritz, S. (author)
- Roth, M. (author)
- Schaal, M. (author)
- Schulz, A. (author)
- Sgro, C. (author)
- Siskind, E. J. (author)
- Spandre, G. (author)
- Spinelli, P. (author)
- Strong, A. W. (author)
- Takahashi, H. (author)
- Takeuchi, Y. (author)
- Thayer, J. G. (author)
- Thayer, J. B. (author)
- Thompson, D. J. (author)
- Tibaldo, L. (author)
- Tinivella, M. (author)
- Torres, D. F. (author)
- Tosti, G. (author)
- Troja, E. (author)
- Tronconi, V. (author)
- Usher, T. L. (author)
- Vandenbroucke, J. (author)
- Vasileiou, V. (author)
- Vianello, G. (author)
- Vitale, V. (author)
- Werner, M. (author)
- Winer, B. L. (author)
- Wood, K. S. (author)
- Wood, M. (author)
- Yang, Z. (author)
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- (creator_code:org_t)
- 2014
- 2014
- English.
- In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 112:15, s. 151103-
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Recent accurate measurements of cosmic-ray (CR) species by ATIC-2, CREAM, and PAMELA reveal an unexpected hardening in the proton and He spectra above a few hundred GeV, a gradual softening of the spectra just below a few hundred GeV, and a harder spectrum of He compared to that of protons. These newly discovered features may offer a clue to the origin of high-energy CRs. We use the Fermi Large Area Telescope observations of the gamma-ray emission from Earth's limb for an indirect measurement of the local spectrum of CR protons in the energy range similar to 90 GeV-6 TeV (derived from a photon energy range 15 GeV-1 TeV). Our analysis shows that single power law and broken power law spectra fit the data equally well and yield a proton spectrum with index 2.68 +/- 0.04 and 2.61 +/- 0.08 above similar to 200 GeV, respectively.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Energy-Spectrum
- Helium Spectra
- Emission
- Galaxy
- Atmosphere
- Proton
- Albedo
- Model
- Egret
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Physical Review Letters (Search for host publication in LIBRIS)
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- By the author/editor
- Ackermann, M.
- Ajello, M.
- Albert, A.
- Allafort, A.
- Baldini, L.
- Barbiellini, G.
- show more...
- Bastieri, D.
- Bechtol, K.
- Bellazzini, R.
- Blandford, R. D.
- Bloom, E. D.
- Bonamente, E.
- Bottacini, E.
- Bouvier, A.
- Brandt, T. J.
- Brigida, M.
- Bruel, P.
- Buehler, R.
- Buson, S.
- Caliandro, G. A.
- Cameron, R. A.
- Caraveo, P. A.
- Cecchi, C.
- Charles, E.
- Chaves, R. C. G.
- Chekhtman, A.
- Chiang, J.
- Chiaro, G.
- Ciprini, S.
- Claus, R.
- Cohen-Tanugi, J.
- Conrad, Jan
- Cutini, S.
- Dalton, M.
- D'Ammando, F.
- de Angelis, A.
- de Palma, F.
- Dermer, C. D.
- Digel, S. W.
- Di Venere, L.
- do Couto e Silva ...
- Drell, P. S.
- Drlica-Wagner, A ...
- Favuzzi, C.
- Fegan, S. J.
- Ferrara, E. C.
- Focke, W. B.
- Franckowiak, A.
- Fukazawa, Y.
- Funk, S.
- Fusco, P.
- Gargano, F.
- Gasparrini, D.
- Germani, S.
- Giglietto, N.
- Giordano, F.
- Giroletti, M.
- Glanzman, T.
- Godfrey, G.
- Gomez-Vargas, G. ...
- Grenier, I. A.
- Grove, J. E.
- Guiriec, S.
- Gustafsson, M.
- Hadasch, D.
- Hanabata, Y.
- Harding, A. K.
- Hayashida, M.
- Hayashi, K.
- Hewitt, J. W.
- Horan, D.
- Hou, X.
- Hughes, R. E.
- Inoue, Y.
- Jackson, Miranda ...
- Jogler, T.
- Johannesson, G.
- Johnson, A. S.
- Kamae, T.
- Kawano, T.
- Knoedlseder, J.
- Kuss, M.
- Lande, J.
- Larsson, Stefan
- Latronico, L.
- Longo, F.
- Loparco, F.
- Lovellette, M. N ...
- Lubrano, P.
- Mayer, M.
- Mazziotta, M. N.
- McEnery, J. E.
- Mehault, J.
- Michelson, P. F.
- Mitthumsiri, W.
- Mizuno, T.
- Moiseev, A. A.
- Monte, C.
- Monzani, M. E.
- Morselli, A.
- Moskalenko, I. V ...
- Murgia, S.
- Nemmen, R.
- Nuss, E.
- Ohsugi, T.
- Okumura, A.
- Orienti, M.
- Orlando, E.
- Ormes, J. F.
- Paneque, D.
- Panetta, J. H.
- Perkins, J. S.
- Pesce-Rollins, M ...
- Piron, F.
- Pivato, G.
- Porter, T. A.
- Raino, S.
- Rando, R.
- Razzano, M.
- Razzaque, S.
- Reimer, A.
- Reimer, O.
- Ritz, S.
- Roth, M.
- Schaal, M.
- Schulz, A.
- Sgro, C.
- Siskind, E. J.
- Spandre, G.
- Spinelli, P.
- Strong, A. W.
- Takahashi, H.
- Takeuchi, Y.
- Thayer, J. G.
- Thayer, J. B.
- Thompson, D. J.
- Tibaldo, L.
- Tinivella, M.
- Torres, D. F.
- Tosti, G.
- Troja, E.
- Tronconi, V.
- Usher, T. L.
- Vandenbroucke, J ...
- Vasileiou, V.
- Vianello, G.
- Vitale, V.
- Werner, M.
- Winer, B. L.
- Wood, K. S.
- Wood, M.
- Yang, Z.
- show less...
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Royal Institute of Technology
- Stockholm University
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