Discovery of Localized Regions of Excess 10-TeV Cosmic Rays

A. A. Abdo; B. Allen; T. Aune; D. Berley; E. Blaufuss; S. Casanova; C. Chen; B. L. Dingus; R. W. Ellsworth; L. Fleysher; R. Fleysher; M. M. Gonzalez; J. A. Goodman; C. M. Hoffman; P. H. Hüntemeyer; B. E. Kolterman; C. P. Lansdell; J. T. Linnemann; J. E. McEnery; A. I. Mincer; P. Nemethy; D. Noyes; J. Pretz; J. M. Ryan; P. M.Saz Parkinson; A. Shoup; G. Sinnis; A. J. Smith; G. W. Sullivan; V. Vasileiou; G. P. Walker; D. A. Williams; G. B. Yodh

doi:10.48550/arXiv.0801.3827

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Originalsprache	Englisch
Aufsatznummer	221101
Seitenumfang	5
Fachzeitschrift	Physical review letters
Jahrgang	101
Ausgabenummer	22
Frühes Online-Datum	24 Nov. 2008
Publikationsstatus	Veröffentlicht - 28 Nov. 2008
Extern publiziert	Ja

Abstract

The 7 year data set of the Milagro TeV observatory contains 2.2×1011 events of which most are due to hadronic cosmic rays. These data are searched for evidence of intermediate scale structure. Excess emission on angular scales of ∼10° has been found in two localized regions of unknown origin with greater than 12σ significance. Both regions are inconsistent with pure gamma-ray emission with high confidence. One of the regions has a different energy spectrum than the isotropic cosmic-ray flux at a level of 4.6σ, and it is consistent with hard spectrum protons with an exponential cutoff, with the most significant excess at ∼10TeV. Potential causes of these excesses are explored, but no compelling explanations are found.

ASJC Scopus Sachgebiete

Physik und Astronomie (insg.)
Allgemeine Physik und Astronomie

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Discovery of Localized Regions of Excess 10-TeV Cosmic Rays. / Abdo, A. A.; Allen, B.; Aune, T. et al.
in: Physical review letters, Jahrgang 101, Nr. 22, 221101, 28.11.2008.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Abdo, AA, Allen, B, Aune, T, Berley, D, Blaufuss, E, Casanova, S, Chen, C, Dingus, BL, Ellsworth, RW, Fleysher, L, Fleysher, R, Gonzalez, MM, Goodman, JA, Hoffman, CM, Hüntemeyer, PH, Kolterman, BE, Lansdell, CP, Linnemann, JT, McEnery, JE, Mincer, AI, Nemethy, P, Noyes, D, Pretz, J, Ryan, JM, Parkinson, PMS, Shoup, A, Sinnis, G, Smith, AJ, Sullivan, GW, Vasileiou, V, Walker, GP, Williams, DA & Yodh, GB 2008, 'Discovery of Localized Regions of Excess 10-TeV Cosmic Rays', Physical review letters, Jg. 101, Nr. 22, 221101. https://doi.org/10.48550/arXiv.0801.3827, https://doi.org/10.1103/PhysRevLett.101.221101

Abdo, A. A., Allen, B., Aune, T., Berley, D., Blaufuss, E., Casanova, S., Chen, C., Dingus, B. L., Ellsworth, R. W., Fleysher, L., Fleysher, R., Gonzalez, M. M., Goodman, J. A., Hoffman, C. M., Hüntemeyer, P. H., Kolterman, B. E., Lansdell, C. P., Linnemann, J. T., McEnery, J. E., ... Yodh, G. B. (2008). Discovery of Localized Regions of Excess 10-TeV Cosmic Rays. Physical review letters, 101(22), Artikel 221101. https://doi.org/10.48550/arXiv.0801.3827, https://doi.org/10.1103/PhysRevLett.101.221101

Abdo AA, Allen B, Aune T, Berley D, Blaufuss E, Casanova S et al. Discovery of Localized Regions of Excess 10-TeV Cosmic Rays. Physical review letters. 2008 Nov 28;101(22):221101. Epub 2008 Nov 24. doi: 10.48550/arXiv.0801.3827, 10.1103/PhysRevLett.101.221101

Abdo, A. A. ; Allen, B. ; Aune, T. et al. / Discovery of Localized Regions of Excess 10-TeV Cosmic Rays. in: Physical review letters. 2008 ; Jahrgang 101, Nr. 22.

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abstract = "The 7 year data set of the Milagro TeV observatory contains 2.2×1011 events of which most are due to hadronic cosmic rays. These data are searched for evidence of intermediate scale structure. Excess emission on angular scales of ∼10° has been found in two localized regions of unknown origin with greater than 12σ significance. Both regions are inconsistent with pure gamma-ray emission with high confidence. One of the regions has a different energy spectrum than the isotropic cosmic-ray flux at a level of 4.6σ, and it is consistent with hard spectrum protons with an exponential cutoff, with the most significant excess at ∼10TeV. Potential causes of these excesses are explored, but no compelling explanations are found.",

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AU - Abdo, A. A.

AU - Allen, B.

AU - Aune, T.

AU - Berley, D.

AU - Blaufuss, E.

AU - Casanova, S.

AU - Chen, C.

AU - Dingus, B. L.

AU - Ellsworth, R. W.

AU - Fleysher, L.

AU - Fleysher, R.

AU - Gonzalez, M. M.

AU - Goodman, J. A.

AU - Hoffman, C. M.

AU - Hüntemeyer, P. H.

AU - Kolterman, B. E.

AU - Lansdell, C. P.

AU - Linnemann, J. T.

AU - McEnery, J. E.

AU - Mincer, A. I.

AU - Nemethy, P.

AU - Noyes, D.

AU - Pretz, J.

AU - Ryan, J. M.

AU - Parkinson, P. M.Saz

AU - Shoup, A.

AU - Sinnis, G.

AU - Smith, A. J.

AU - Sullivan, G. W.

AU - Vasileiou, V.

AU - Walker, G. P.

AU - Williams, D. A.

AU - Yodh, G. B.

PY - 2008/11/28

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N2 - The 7 year data set of the Milagro TeV observatory contains 2.2×1011 events of which most are due to hadronic cosmic rays. These data are searched for evidence of intermediate scale structure. Excess emission on angular scales of ∼10° has been found in two localized regions of unknown origin with greater than 12σ significance. Both regions are inconsistent with pure gamma-ray emission with high confidence. One of the regions has a different energy spectrum than the isotropic cosmic-ray flux at a level of 4.6σ, and it is consistent with hard spectrum protons with an exponential cutoff, with the most significant excess at ∼10TeV. Potential causes of these excesses are explored, but no compelling explanations are found.

AB - The 7 year data set of the Milagro TeV observatory contains 2.2×1011 events of which most are due to hadronic cosmic rays. These data are searched for evidence of intermediate scale structure. Excess emission on angular scales of ∼10° has been found in two localized regions of unknown origin with greater than 12σ significance. Both regions are inconsistent with pure gamma-ray emission with high confidence. One of the regions has a different energy spectrum than the isotropic cosmic-ray flux at a level of 4.6σ, and it is consistent with hard spectrum protons with an exponential cutoff, with the most significant excess at ∼10TeV. Potential causes of these excesses are explored, but no compelling explanations are found.

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DO - 10.48550/arXiv.0801.3827

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VL - 101

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

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Discovery of Localized Regions of Excess 10-TeV Cosmic Rays

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