Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb

M. Ackermann; M. Ajello; A. Albert; A. Allafort; L. Baldini; G. Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; R. D. Blandford; E. D. Bloom; E. Bonamente; E. Bottacini; A. Bouvier; T. J. Brandt; M. Brigida; P. Bruel; R. Buehler; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; C. Cecchi; E. Charles; R. C.G. Chaves; A. Chekhtman; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; S. Cutini; M. Dalton; F. Dammando; A. De Angelis; F. De Palma; C. D. Dermer; S. W. Digel; L. Di Venere; E. Do Couto E Silva; P. S. Drell; A. Drlica-Wagner; C. Favuzzi; S. J. Fegan; E. C. Ferrara; W. B. Focke; A. Franckowiak; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; S. Germani; N. Giglietto; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; G. A. Gomez-Vargas; I. A. Grenier; J. E. Grove; S. Guiriec; M. Gustafsson; D. Hadasch; Y. Hanabata; A. K. Harding; M. Hayashida; K. Hayashi; J. W. Hewitt; D. Horan; X. Hou; R. E. Hughes; Y. Inoue; M. S. Jackson; T. Jogler; G. Jóhannesson; A. S. Johnson; T. Kamae; T. Kawano; J. Knödlseder; M. Kuss; J. Lande; S. Larsson; L. Latronico; F. Longo; F. Loparco; M. N. Lovellette; P. Lubrano; M. Mayer; M. N. Mazziotta; J. E. McEnery; J. Mehault; P. F. Michelson; W. Mitthumsiri; T. Mizuno; A. A. Moiseev; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; R. Nemmen; E. Nuss; T. Ohsugi; A. Okumura; M. Orienti; E. Orlando; J. F. Ormes; D. Paneque; J. H. Panetta; J. S. Perkins; M. Pesce-Rollins; F. Piron; G. Pivato; T. A. Porter; S. Rainò; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; S. Ritz; M. Roth; M. Schaal; A. Schulz; C. Sgrò; E. J. Siskind; G. Spandre; P. Spinelli; A. W. Strong; H. Takahashi; Y. Takeuchi; J. G. Thayer; J. B. Thayer; D. J. Thompson; L. Tibaldo; M. Tinivella; D. F. Torres; G. Tosti; E. Troja; V. Tronconi; T. L. Usher; J. Vandenbroucke; V. Vasileiou; G. Vianello; V. Vitale; M. Werner; B. L. Winer; K. S. Wood; M. Wood; Z. Yang

doi:10.1103/PhysRevLett.112.151103

Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb

M. Ackermann
, M. Ajello
, A. Albert
, A. Allafort
, L. Baldini
, G. Barbiellini
, D. Bastieri
, K. Bechtol
, R. Bellazzini
, R. D. Blandford
, E. D. Bloom
, E. Bonamente
, E. Bottacini
, A. Bouvier
, T. J. Brandt
, M. Brigida
, P. Bruel
, R. Buehler
, S. Buson
, G. A. Caliandro

R. A. Cameron, P. A. Caraveo, C. Cecchi, E. Charles, R. C.G. Chaves, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, S. Cutini, M. Dalton, F. Dammando, A. De Angelis, F. De Palma, C. D. Dermer, S. W. Digel, L. Di Venere, E. Do Couto E Silva, P. S. Drell, A. Drlica-Wagner, C. Favuzzi, S. J. Fegan, E. C. Ferrara, W. B. Focke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, G. A. Gomez-Vargas, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, D. Hadasch, Y. Hanabata, A. K. Harding, M. Hayashida, K. Hayashi, J. W. Hewitt, D. Horan, X. Hou, R. E. Hughes, Y. Inoue, M. S. Jackson, T. Jogler, G. Jóhannesson, A. S. Johnson, T. Kamae, T. Kawano, J. Knödlseder, M. Kuss, J. Lande, S. Larsson, L. Latronico, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, M. Mayer, M. N. Mazziotta, J. E. McEnery, J. Mehault, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, R. Nemmen, E. Nuss, T. Ohsugi, A. Okumura, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, J. H. Panetta, J. S. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, S. Ritz, M. Roth, M. Schaal, A. Schulz, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, A. W. Strong, H. Takahashi, Y. Takeuchi, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, M. Tinivella, D. F. Torres, G. Tosti, E. Troja, V. Tronconi, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, M. Werner, B. L. Winer, K. S. Wood, M. Wood, Z. Yang

Physics

German Electron Synchrotron
University of California at Berkeley
Stanford University
National Institute for Nuclear Physics
University of Trieste
University of Padua
University of Perugia
University of California at Santa Cruz
NASA Goddard Space Flight Center
Polytechnic University of Bari
École polytechnique
Consorzio Interuniversitario per la Fisica Spaziale (CIFS)
Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
CNRS
George Mason University
Italian Space Agency
Osservatorio Astronomico Roma
Université Montpellier 2
Stockholm University
Oskar Klein Centre
Royal Swedish Academy of Sciences
Centre d'Etudes Nucléaires Bordeaux-Gradingnan (CENBG)
National Institute for Astrophysics
University of Udine
Naval Research Laboratory
Fermi National Accelerator Laboratory
Hiroshima University
Universidad Autónoma de Madrid
Université libre de Bruxelles
Innsbruck Medical University
The University of Tokyo
JAXA Institute of Space and Astronautical Science
Ohio State University
KTH Royal Institute of Technology
University of Iceland
IRAP
Université Toulouse III - Paul Sabatier
University of Maryland
Faculty of Science, Mahidol University
University of California at Irvine
University of Maryland Baltimore County
Nagoya University
University of Denver
Max Planck Institute for Physics (Werner Heisenberg Institute)
University of Washington
National Research Council
NYCB Real-Time Computing Inc.
Max Planck Institute for Extraterrestrial Physics
Waseda University
Campus UAB
ICREA
University of Rome Tor Vergata

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

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 -ray emission from Earthas limb for an indirect measurement of the local spectrum of CR protons in the energy range 90GeV-6TeV (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 200GeV, respectively.

Original language	English
Article number	151103
Journal	Physical Review Letters
Volume	112
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.112.151103
Publication status	Published - 17 Apr 2014

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.112.151103

Cite this

Ackermann, M., Ajello, M., Albert, A., Allafort, A., Baldini, L., Barbiellini, G., 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., ... Yang, Z. (2014). Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb. Physical Review Letters, 112(15), Article 151103. https://doi.org/10.1103/PhysRevLett.112.151103

@article{9b131d0ef71441cd9af868b76e949bd8,

title = "Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb",

abstract = "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 -ray emission from Earthas limb for an indirect measurement of the local spectrum of CR protons in the energy range 90GeV-6TeV (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 200GeV, respectively.",

author = "M. Ackermann and M. Ajello and A. Albert and A. Allafort and L. Baldini and G. Barbiellini and D. Bastieri and K. Bechtol and R. Bellazzini and Blandford, \{R. D.\} and Bloom, \{E. D.\} and E. Bonamente and E. Bottacini and A. Bouvier and Brandt, \{T. J.\} and M. Brigida and P. Bruel and R. Buehler and S. Buson and Caliandro, \{G. A.\} and Cameron, \{R. A.\} and Caraveo, \{P. A.\} and C. Cecchi and E. Charles and Chaves, \{R. C.G.\} and A. Chekhtman and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and J. Conrad and S. Cutini and M. Dalton and F. Dammando and \{De Angelis\}, A. and \{De Palma\}, F. and Dermer, \{C. D.\} and Digel, \{S. W.\} and \{Di Venere\}, L. and \{Do Couto E Silva\}, E. and Drell, \{P. S.\} and A. Drlica-Wagner and C. Favuzzi and Fegan, \{S. J.\} and Ferrara, \{E. C.\} and Focke, \{W. B.\} and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and S. Germani and N. Giglietto and F. Giordano and M. Giroletti and T. Glanzman and G. Godfrey and Gomez-Vargas, \{G. A.\} and Grenier, \{I. A.\} and Grove, \{J. E.\} and S. Guiriec and M. Gustafsson and D. Hadasch and Y. Hanabata and Harding, \{A. K.\} and M. Hayashida and K. Hayashi and Hewitt, \{J. W.\} and D. Horan and X. Hou and Hughes, \{R. E.\} and Y. Inoue and Jackson, \{M. S.\} and T. Jogler and G. J{\'o}hannesson and Johnson, \{A. S.\} and T. Kamae and T. Kawano and J. Kn{\"o}dlseder and M. Kuss and J. Lande and S. Larsson and L. Latronico and F. Longo and F. Loparco and Lovellette, \{M. N.\} and P. Lubrano and M. Mayer and Mazziotta, \{M. N.\} and McEnery, \{J. E.\} and J. Mehault and Michelson, \{P. F.\} and W. Mitthumsiri and T. Mizuno and Moiseev, \{A. A.\} and C. Monte and Monzani, \{M. E.\} and A. Morselli and Moskalenko, \{I. V.\} and S. Murgia and R. Nemmen and E. Nuss and T. Ohsugi and A. Okumura and M. Orienti and E. Orlando and Ormes, \{J. F.\} and D. Paneque and Panetta, \{J. H.\} and Perkins, \{J. S.\} and M. Pesce-Rollins and F. Piron and G. Pivato and Porter, \{T. A.\} and S. Rain{\`o} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and S. Ritz and M. Roth and M. Schaal and A. Schulz and C. Sgr{\`o} and Siskind, \{E. J.\} and G. Spandre and P. Spinelli and Strong, \{A. W.\} and H. Takahashi and Y. Takeuchi and Thayer, \{J. G.\} and Thayer, \{J. B.\} and Thompson, \{D. J.\} and L. Tibaldo and M. Tinivella and Torres, \{D. F.\} and G. Tosti and E. Troja and V. Tronconi and Usher, \{T. L.\} and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and M. Werner and Winer, \{B. L.\} and Wood, \{K. S.\} and M. Wood and Z. Yang",

year = "2014",

month = apr,

day = "17",

doi = "10.1103/PhysRevLett.112.151103",

language = "English",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

}

Ackermann, M, Ajello, M, Albert, A, Allafort, A, Baldini, L, Barbiellini, G, Bastieri, D, Bechtol, K, Bellazzini, R, Blandford, RD, Bloom, ED, Bonamente, E, Bottacini, E, Bouvier, A, Brandt, TJ, Brigida, M, Bruel, P, Buehler, R, Buson, S, Caliandro, GA, Cameron, RA, Caraveo, PA, Cecchi, C, Charles, E, Chaves, RCG, Chekhtman, A, Chiang, J, Chiaro, G, Ciprini, S, Claus, R, Cohen-Tanugi, J, Conrad, J, Cutini, S, Dalton, M, Dammando, F, De Angelis, A, De Palma, F, Dermer, CD, Digel, SW, Di Venere, L, Do Couto E Silva, E, Drell, PS, Drlica-Wagner, A, Favuzzi, C, Fegan, SJ, Ferrara, EC, Focke, WB, 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, GA, Grenier, IA, Grove, JE, Guiriec, S, Gustafsson, M, Hadasch, D, Hanabata, Y, Harding, AK, Hayashida, M, Hayashi, K, Hewitt, JW, Horan, D, Hou, X, Hughes, RE, Inoue, Y, Jackson, MS, Jogler, T, Jóhannesson, G, Johnson, AS, Kamae, T, Kawano, T, Knödlseder, J, Kuss, M, Lande, J, Larsson, S, Latronico, L, Longo, F, Loparco, F, Lovellette, MN, Lubrano, P, Mayer, M, Mazziotta, MN, McEnery, JE, Mehault, J, Michelson, PF, Mitthumsiri, W, Mizuno, T, Moiseev, AA, Monte, C, Monzani, ME, Morselli, A, Moskalenko, IV, Murgia, S, Nemmen, R, Nuss, E, Ohsugi, T, Okumura, A, Orienti, M, Orlando, E, Ormes, JF, Paneque, D, Panetta, JH, Perkins, JS, Pesce-Rollins, M, Piron, F, Pivato, G, Porter, TA, Rainò, S, Rando, R, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Ritz, S, Roth, M, Schaal, M, Schulz, A, Sgrò, C, Siskind, EJ, Spandre, G, Spinelli, P, Strong, AW, Takahashi, H, Takeuchi, Y, Thayer, JG, Thayer, JB, Thompson, DJ, Tibaldo, L, Tinivella, M, Torres, DF, Tosti, G, Troja, E, Tronconi, V, Usher, TL, Vandenbroucke, J, Vasileiou, V, Vianello, G, Vitale, V, Werner, M, Winer, BL, Wood, KS, Wood, M & Yang, Z 2014, 'Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb', Physical Review Letters, vol. 112, no. 15, 151103. https://doi.org/10.1103/PhysRevLett.112.151103

TY - JOUR

T1 - Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb

AU - Ackermann, M.

AU - Ajello, M.

AU - Albert, A.

AU - Allafort, A.

AU - Baldini, L.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Bechtol, K.

AU - Bellazzini, R.

AU - Blandford, R. D.

AU - Bloom, E. D.

AU - Bonamente, E.

AU - Bottacini, E.

AU - Bouvier, A.

AU - Brandt, T. J.

AU - Brigida, M.

AU - Bruel, P.

AU - Buehler, R.

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caraveo, P. A.

AU - Cecchi, C.

AU - Charles, E.

AU - Chaves, R. C.G.

AU - Chekhtman, A.

AU - Chiang, J.

AU - Chiaro, G.

AU - Ciprini, S.

AU - Claus, R.

AU - Cohen-Tanugi, J.

AU - Conrad, J.

AU - Cutini, S.

AU - Dalton, M.

AU - Dammando, F.

AU - De Angelis, A.

AU - De Palma, F.

AU - Dermer, C. D.

AU - Digel, S. W.

AU - Di Venere, L.

AU - Do Couto E Silva, E.

AU - Drell, P. S.

AU - Drlica-Wagner, A.

AU - Favuzzi, C.

AU - Fegan, S. J.

AU - Ferrara, E. C.

AU - Focke, W. B.

AU - Franckowiak, A.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Germani, S.

AU - Giglietto, N.

AU - Giordano, F.

AU - Giroletti, M.

AU - Glanzman, T.

AU - Godfrey, G.

AU - Gomez-Vargas, G. A.

AU - Grenier, I. A.

AU - Grove, J. E.

AU - Guiriec, S.

AU - Gustafsson, M.

AU - Hadasch, D.

AU - Hanabata, Y.

AU - Harding, A. K.

AU - Hayashida, M.

AU - Hayashi, K.

AU - Hewitt, J. W.

AU - Horan, D.

AU - Hou, X.

AU - Hughes, R. E.

AU - Inoue, Y.

AU - Jackson, M. S.

AU - Jogler, T.

AU - Jóhannesson, G.

AU - Johnson, A. S.

AU - Kamae, T.

AU - Kawano, T.

AU - Knödlseder, J.

AU - Kuss, M.

AU - Lande, J.

AU - Larsson, S.

AU - Latronico, L.

AU - Longo, F.

AU - Loparco, F.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Mayer, M.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Mehault, J.

AU - Michelson, P. F.

AU - Mitthumsiri, W.

AU - Mizuno, T.

AU - Moiseev, A. A.

AU - Monte, C.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nemmen, R.

AU - Nuss, E.

AU - Ohsugi, T.

AU - Okumura, A.

AU - Orienti, M.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Paneque, D.

AU - Panetta, J. H.

AU - Perkins, J. S.

AU - Pesce-Rollins, M.

AU - Piron, F.

AU - Pivato, G.

AU - Porter, T. A.

AU - Rainò, S.

AU - Rando, R.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Ritz, S.

AU - Roth, M.

AU - Schaal, M.

AU - Schulz, A.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Spandre, G.

AU - Spinelli, P.

AU - Strong, A. W.

AU - Takahashi, H.

AU - Takeuchi, Y.

AU - Thayer, J. G.

AU - Thayer, J. B.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Tinivella, M.

AU - Torres, D. F.

AU - Tosti, G.

AU - Troja, E.

AU - Tronconi, V.

AU - Usher, T. L.

AU - Vandenbroucke, J.

AU - Vasileiou, V.

AU - Vianello, G.

AU - Vitale, V.

AU - Werner, M.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Wood, M.

AU - Yang, Z.

PY - 2014/4/17

Y1 - 2014/4/17

N2 - 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 -ray emission from Earthas limb for an indirect measurement of the local spectrum of CR protons in the energy range 90GeV-6TeV (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 200GeV, respectively.

AB - 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 -ray emission from Earthas limb for an indirect measurement of the local spectrum of CR protons in the energy range 90GeV-6TeV (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 200GeV, respectively.

UR - https://www.scopus.com/pages/publications/84898959342

U2 - 10.1103/PhysRevLett.112.151103

DO - 10.1103/PhysRevLett.112.151103

M3 - Article

AN - SCOPUS:84898959342

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151103

ER -

Inferred cosmic-ray spectrum from fermi large area telescope -Ray Observations of Eartha's Limb

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