Evidence for TeV gamma-ray emission from a region of the galactic plane

R. Atkins, W. Benbow, D. Berley, E. Blaufuss, D. G. Coyne, T. Deyoung, B. L. Dingus, D. E. Dorfan, R. W. Ellsworth, L. Fleysher, R. Fleysher, G. Gisler, M. M. Gonzalez, J. A. Goodman, T. J. Haines, E. Hays, C. M. Hoffman, L. A. Kelley, C. P. Lansdell, J. T. Linnemann & 17 others J. E. McEnery, R. S. Miller, A. I. Mincer, M. F. Morales, P. Nemethy, D. Noyes, J. M. Ryan, F. W. Samuelson, P. M Saz Parkinson, A. Shoup, G. Sinnis, A. J. Smith, G. W. Sullivan, D. A. Williams, M. E. Wilson, X. W. Xu, G. B. Yodh

    Research output: Contribution to journalArticle

    Abstract

    Gamma-ray emission from a narrow band at the galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of galactic longitude l (40°,100°) and latitude |b|<5°. Under the assumption of a simple power law spectrum, with no cutoff in the EGRET-Milagro energy range, the measured integral flux is γ(>3.5TeV)=(6.4±1. 4±2.1)×10-11cm-2s-1sr-1. This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.

    Original languageEnglish (US)
    Article number251103
    JournalPhysical Review Letters
    Volume95
    Issue number25
    DOIs
    StatePublished - Dec 16 2005

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    gamma rays
    cosmic ray showers
    equators
    longitude
    field of view
    narrowband
    extrapolation
    standard deviation
    detectors
    water

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Atkins, R., Benbow, W., Berley, D., Blaufuss, E., Coyne, D. G., Deyoung, T., ... Yodh, G. B. (2005). Evidence for TeV gamma-ray emission from a region of the galactic plane. Physical Review Letters, 95(25), [251103]. https://doi.org/10.1103/PhysRevLett.95.251103

    Evidence for TeV gamma-ray emission from a region of the galactic plane. / Atkins, R.; Benbow, W.; Berley, D.; Blaufuss, E.; Coyne, D. G.; Deyoung, T.; Dingus, B. L.; Dorfan, D. E.; Ellsworth, R. W.; Fleysher, L.; Fleysher, R.; Gisler, G.; Gonzalez, M. M.; Goodman, J. A.; Haines, T. J.; Hays, E.; Hoffman, C. M.; Kelley, L. A.; Lansdell, C. P.; Linnemann, J. T.; McEnery, J. E.; Miller, R. S.; Mincer, A. I.; Morales, M. F.; Nemethy, P.; Noyes, D.; Ryan, J. M.; Samuelson, F. W.; Parkinson, P. M Saz; Shoup, A.; Sinnis, G.; Smith, A. J.; Sullivan, G. W.; Williams, D. A.; Wilson, M. E.; Xu, X. W.; Yodh, G. B.

    In: Physical Review Letters, Vol. 95, No. 25, 251103, 16.12.2005.

    Research output: Contribution to journalArticle

    Atkins, R, Benbow, W, Berley, D, Blaufuss, E, Coyne, DG, Deyoung, T, Dingus, BL, Dorfan, DE, Ellsworth, RW, Fleysher, L, Fleysher, R, Gisler, G, Gonzalez, MM, Goodman, JA, Haines, TJ, Hays, E, Hoffman, CM, Kelley, LA, Lansdell, CP, Linnemann, JT, McEnery, JE, Miller, RS, Mincer, AI, Morales, MF, Nemethy, P, Noyes, D, Ryan, JM, Samuelson, FW, Parkinson, PMS, Shoup, A, Sinnis, G, Smith, AJ, Sullivan, GW, Williams, DA, Wilson, ME, Xu, XW & Yodh, GB 2005, 'Evidence for TeV gamma-ray emission from a region of the galactic plane', Physical Review Letters, vol. 95, no. 25, 251103. https://doi.org/10.1103/PhysRevLett.95.251103
    Atkins R, Benbow W, Berley D, Blaufuss E, Coyne DG, Deyoung T et al. Evidence for TeV gamma-ray emission from a region of the galactic plane. Physical Review Letters. 2005 Dec 16;95(25). 251103. https://doi.org/10.1103/PhysRevLett.95.251103
    Atkins, R. ; Benbow, W. ; Berley, D. ; Blaufuss, E. ; Coyne, D. G. ; Deyoung, T. ; Dingus, B. L. ; Dorfan, D. E. ; Ellsworth, R. W. ; Fleysher, L. ; Fleysher, R. ; Gisler, G. ; Gonzalez, M. M. ; Goodman, J. A. ; Haines, T. J. ; Hays, E. ; Hoffman, C. M. ; Kelley, L. A. ; Lansdell, C. P. ; Linnemann, J. T. ; McEnery, J. E. ; Miller, R. S. ; Mincer, A. I. ; Morales, M. F. ; Nemethy, P. ; Noyes, D. ; Ryan, J. M. ; Samuelson, F. W. ; Parkinson, P. M Saz ; Shoup, A. ; Sinnis, G. ; Smith, A. J. ; Sullivan, G. W. ; Williams, D. A. ; Wilson, M. E. ; Xu, X. W. ; Yodh, G. B. / Evidence for TeV gamma-ray emission from a region of the galactic plane. In: Physical Review Letters. 2005 ; Vol. 95, No. 25.
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    abstract = "Gamma-ray emission from a narrow band at the galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of galactic longitude l (40°,100°) and latitude |b|<5°. Under the assumption of a simple power law spectrum, with no cutoff in the EGRET-Milagro energy range, the measured integral flux is γ(>3.5TeV)=(6.4±1. 4±2.1)×10-11cm-2s-1sr-1. This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.",
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    AU - Atkins, R.

    AU - Benbow, W.

    AU - Berley, D.

    AU - Blaufuss, E.

    AU - Coyne, D. G.

    AU - Deyoung, T.

    AU - Dingus, B. L.

    AU - Dorfan, D. E.

    AU - Ellsworth, R. W.

    AU - Fleysher, L.

    AU - Fleysher, R.

    AU - Gisler, G.

    AU - Gonzalez, M. M.

    AU - Goodman, J. A.

    AU - Haines, T. J.

    AU - Hays, E.

    AU - Hoffman, C. M.

    AU - Kelley, L. A.

    AU - Lansdell, C. P.

    AU - Linnemann, J. T.

    AU - McEnery, J. E.

    AU - Miller, R. S.

    AU - Mincer, A. I.

    AU - Morales, M. F.

    AU - Nemethy, P.

    AU - Noyes, D.

    AU - Ryan, J. M.

    AU - Samuelson, F. W.

    AU - Parkinson, P. M Saz

    AU - Shoup, A.

    AU - Sinnis, G.

    AU - Smith, A. J.

    AU - Sullivan, G. W.

    AU - Williams, D. A.

    AU - Wilson, M. E.

    AU - Xu, X. W.

    AU - Yodh, G. B.

    PY - 2005/12/16

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    N2 - Gamma-ray emission from a narrow band at the galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of galactic longitude l (40°,100°) and latitude |b|<5°. Under the assumption of a simple power law spectrum, with no cutoff in the EGRET-Milagro energy range, the measured integral flux is γ(>3.5TeV)=(6.4±1. 4±2.1)×10-11cm-2s-1sr-1. This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.

    AB - Gamma-ray emission from a narrow band at the galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of galactic longitude l (40°,100°) and latitude |b|<5°. Under the assumption of a simple power law spectrum, with no cutoff in the EGRET-Milagro energy range, the measured integral flux is γ(>3.5TeV)=(6.4±1. 4±2.1)×10-11cm-2s-1sr-1. This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.

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