The discovery of geomagnetically trapped cosmic-ray antiprotons (Articolo in rivista)

Type
Label
  • The discovery of geomagnetically trapped cosmic-ray antiprotons (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/2041-8205/737/2/L29 (literal)
Alternative label
  • Adriani O.; Barbarino G.C.; Bazilevskaya G.A.; Bellotti R.; Boezio M.; Bogomolov E.A.; Bongi M.; Bonvicini V.; Borisov S.; Bottai S.; Bruno A.; Cafagna F.; Campana D.; Carbone R.; Carlson P.; Casolino M.; Castellini G.; Consiglio L.; De Pascale M.P.; De Santis C.; De Simone N.; Di Felice V.; Galper A.M.; Gillard W.; Grishantseva L.; Jerse G.; Karelin A.V.; Kheymits M.D.; Koldashov S.V.; Krutkov S.Y.; Kvashnin A.N.; Leonov A.; Malakhov V.; Marcelli L.; Mayorov A.G.; Menn W.; Mikhailov V.V.; Mocchiutti E.; Monaco A.; Mori N.; Nikonov N.; Osteria G.; Palma F.; Papini P.; Pearce M.; Picozza P.; Pizzolotto C.; Ricci M.; Ricciarini S.B.; Rossetto L.; Sarkar R.; Simon M.; Sparvoli R.; Spillantini P.; Stozhkov Y.I.; Vacchi A.; Vannuccini E.; Vasilyev G.; Voronov S.A.; Yurkin Y.T.; Wu J.; Zampa G.; Zampa N.; Zverev V.G. (2011)
    The discovery of geomagnetically trapped cosmic-ray antiprotons
    in The astrophysical journal. Letters (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Adriani O.; Barbarino G.C.; Bazilevskaya G.A.; Bellotti R.; Boezio M.; Bogomolov E.A.; Bongi M.; Bonvicini V.; Borisov S.; Bottai S.; Bruno A.; Cafagna F.; Campana D.; Carbone R.; Carlson P.; Casolino M.; Castellini G.; Consiglio L.; De Pascale M.P.; De Santis C.; De Simone N.; Di Felice V.; Galper A.M.; Gillard W.; Grishantseva L.; Jerse G.; Karelin A.V.; Kheymits M.D.; Koldashov S.V.; Krutkov S.Y.; Kvashnin A.N.; Leonov A.; Malakhov V.; Marcelli L.; Mayorov A.G.; Menn W.; Mikhailov V.V.; Mocchiutti E.; Monaco A.; Mori N.; Nikonov N.; Osteria G.; Palma F.; Papini P.; Pearce M.; Picozza P.; Pizzolotto C.; Ricci M.; Ricciarini S.B.; Rossetto L.; Sarkar R.; Simon M.; Sparvoli R.; Spillantini P.; Stozhkov Y.I.; Vacchi A.; Vannuccini E.; Vasilyev G.; Voronov S.A.; Yurkin Y.T.; Wu J.; Zampa G.; Zampa N.; Zverev V.G. (literal)
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  • http://www.scopus.com/inward/record.url?eid=2-s2.0-80051780010&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 737 (literal)
Rivista
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  • 2 (literal)
Note
  • Scopu (literal)
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  • Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence, Italy; INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy; Department of Physics, University of Naples Federico II, I-80126 Naples, Italy; INFN, Sezione di Naples, I-80126 Naples, Italy; Lebedev Physical Institute, RU-119991 Moscow, Russian Federation; Department of Physics, University of Bari, I-70126 Bari, Italy; INFN, Sezione di Bari, I-70126 Bari, Italy; INFN, Sezione di Trieste, I-34149 Trieste, Italy; Ioffe Physical Technical Institute, RU-194021 St. Petersburg, Russian Federation; INFN, Sezione di Rome Tor Vergata, I-00133 Rome, Italy; Department of Physics, University of Rome Tor Vergata, I-00133 Rome, Italy; NRNU MEPhI, RU-115409 Moscow, Russian Federation; Department of Physics, Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, SE-10691 Stockholm, Sweden; IFAC, I-50019 Sesto Fiorentino, Florence, Italy; Department of Physics, University of Trieste, I-34147 Trieste, Italy; Department of Physics, Universitat Siegen, D-57068 Siegen, Germany; INFN, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy; School of Mathematics and Physics, China University of Geosciences, CN-430074 Wuhan, China (literal)
Titolo
  • The discovery of geomagnetically trapped cosmic-ray antiprotons (literal)
Abstract
  • The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton radiation belt around the Earth. The trapped antiproton energy spectrum in the South Atlantic Anomaly (SAA) region has been measured by the PAMELA experiment for the kinetic energy range 60-750MeV. A measurement of the atmospheric sub-cutoff antiproton spectrum outside the radiation belts is also reported. PAMELA data show that the magnetospheric antiproton flux in the SAA exceeds the cosmic-ray antiproton flux by three orders of magnitude at the present solar minimum, and exceeds the sub-cutoff antiproton flux outside radiation belts by four orders of magnitude, constituting the most abundant source of antiprotons near the Earth. © 2011. The American Astronomical Society. All rights reserved. (literal)
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