Search for 100 TeV γ-ray emission from the galactic disk

M. Aglietta; B. Alessandro; F. Arneodo; L. Bergamasco; A. Campos Fauth; C. Castagnoli; A. Castellina; C. Cattadori; A. Chiavassa; G. Cini; B. D'Ettorre Piazzoli; W. Fulgione; P. Galeotti; P. L. Ghia; G. Mannocchi; C. Morello; G. Navarra; L. Riccati; O. Saavedra; G. C. Trinchero; P. Vallania; S. Vernetto

doi:10.1086/171773

Search for 100 TeV γ-ray emission from the galactic disk

M. Aglietta, B. Alessandro, F. Arneodo, L. Bergamasco, A. Campos Fauth, C. Castagnoli, A. Castellina, C. Cattadori, A. Chiavassa, G. Cini, B. D'Ettorre Piazzoli, W. Fulgione, P. Galeotti, P. L. Ghia, G. Mannocchi, C. Morello, G. Navarra, L. Riccati, O. Saavedra, G. C. TrincheroP. Vallania, S. Vernetto

Physics

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

Abstract

A search for UHE (≥ 100 TeV) diffuse γ-ray emission from the Galactic disk has been carried out, through the excess in the cosmic-ray counting rate, by means of the EAS-TOP extensive air shower array at the Gran Sasso Laboratories. Measurements are performed from angular scales |b| ≈ 2° (as in 100 MeV satellite experiments, and as expected from CR interactions with the ISM) to |b| ≈ 10°. The obtained upper limits (90% c.l.) to the γ-ray excess over the cosmic-ray flux from the Galactic disk region are I_γ/I_p < 0.2% for |b| < 2°, I_γ/I_p < 0.04% for |b| < 5°, and I_γ/I_p < 0.02% for |b| < 12° at E₀ > 130 TeV, corresponding to upper limits to the flux of I_γ < 3.2 × 10^-13 cm^-2 s^-1 rad^-1, I_γ < 2.8 × 10^-13 cm^-2 s^-1 rad^-1, and I_γ < 4 × 10^-13 cm^-2 s^-1 rad^-1.

Original language	English (US)
Pages (from-to)	148-152
Number of pages	5
Journal	Astrophysical Journal
Volume	397
Issue number	1
DOIs	https://doi.org/10.1086/171773
State	Published - 1992

Keywords

Cosmic rays
Gamma rays: Observations

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/171773

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Aglietta, M., Alessandro, B., Arneodo, F., Bergamasco, L., Campos Fauth, A., Castagnoli, C., Castellina, A., Cattadori, C., Chiavassa, A., Cini, G., D'Ettorre Piazzoli, B., Fulgione, W., Galeotti, P., Ghia, P. L., Mannocchi, G., Morello, C., Navarra, G., Riccati, L., Saavedra, O., ... Vernetto, S. (1992). Search for 100 TeV γ-ray emission from the galactic disk. Astrophysical Journal, 397(1), 148-152. https://doi.org/10.1086/171773

Aglietta, M, Alessandro, B, Arneodo, F, Bergamasco, L, Campos Fauth, A, Castagnoli, C, Castellina, A, Cattadori, C, Chiavassa, A, Cini, G, D'Ettorre Piazzoli, B, Fulgione, W, Galeotti, P, Ghia, PL, Mannocchi, G, Morello, C, Navarra, G, Riccati, L, Saavedra, O, Trinchero, GC, Vallania, P & Vernetto, S 1992, 'Search for 100 TeV γ-ray emission from the galactic disk', Astrophysical Journal, vol. 397, no. 1, pp. 148-152. https://doi.org/10.1086/171773

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abstract = "A search for UHE (≥ 100 TeV) diffuse γ-ray emission from the Galactic disk has been carried out, through the excess in the cosmic-ray counting rate, by means of the EAS-TOP extensive air shower array at the Gran Sasso Laboratories. Measurements are performed from angular scales |b| ≈ 2° (as in 100 MeV satellite experiments, and as expected from CR interactions with the ISM) to |b| ≈ 10°. The obtained upper limits (90% c.l.) to the γ-ray excess over the cosmic-ray flux from the Galactic disk region are Iγ/Ip < 0.2% for |b| < 2°, Iγ/Ip < 0.04% for |b| < 5°, and Iγ/Ip < 0.02% for |b| < 12° at E0 > 130 TeV, corresponding to upper limits to the flux of Iγ < 3.2 × 10-13 cm-2 s-1 rad-1, Iγ < 2.8 × 10-13 cm-2 s-1 rad-1, and Iγ < 4 × 10-13 cm-2 s-1 rad-1.",

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author = "M. Aglietta and B. Alessandro and F. Arneodo and L. Bergamasco and {Campos Fauth}, A. and C. Castagnoli and A. Castellina and C. Cattadori and A. Chiavassa and G. Cini and {D'Ettorre Piazzoli}, B. and W. Fulgione and P. Galeotti and Ghia, {P. L.} and G. Mannocchi and C. Morello and G. Navarra and L. Riccati and O. Saavedra and Trinchero, {G. C.} and P. Vallania and S. Vernetto",

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AU - Aglietta, M.

AU - Alessandro, B.

AU - Arneodo, F.

AU - Bergamasco, L.

AU - Campos Fauth, A.

AU - Castagnoli, C.

AU - Castellina, A.

AU - Cattadori, C.

AU - Chiavassa, A.

AU - Cini, G.

AU - D'Ettorre Piazzoli, B.

AU - Fulgione, W.

AU - Galeotti, P.

AU - Ghia, P. L.

AU - Mannocchi, G.

AU - Morello, C.

AU - Navarra, G.

AU - Riccati, L.

AU - Saavedra, O.

AU - Trinchero, G. C.

AU - Vallania, P.

AU - Vernetto, S.

PY - 1992

Y1 - 1992

N2 - A search for UHE (≥ 100 TeV) diffuse γ-ray emission from the Galactic disk has been carried out, through the excess in the cosmic-ray counting rate, by means of the EAS-TOP extensive air shower array at the Gran Sasso Laboratories. Measurements are performed from angular scales |b| ≈ 2° (as in 100 MeV satellite experiments, and as expected from CR interactions with the ISM) to |b| ≈ 10°. The obtained upper limits (90% c.l.) to the γ-ray excess over the cosmic-ray flux from the Galactic disk region are Iγ/Ip < 0.2% for |b| < 2°, Iγ/Ip < 0.04% for |b| < 5°, and Iγ/Ip < 0.02% for |b| < 12° at E0 > 130 TeV, corresponding to upper limits to the flux of Iγ < 3.2 × 10-13 cm-2 s-1 rad-1, Iγ < 2.8 × 10-13 cm-2 s-1 rad-1, and Iγ < 4 × 10-13 cm-2 s-1 rad-1.

AB - A search for UHE (≥ 100 TeV) diffuse γ-ray emission from the Galactic disk has been carried out, through the excess in the cosmic-ray counting rate, by means of the EAS-TOP extensive air shower array at the Gran Sasso Laboratories. Measurements are performed from angular scales |b| ≈ 2° (as in 100 MeV satellite experiments, and as expected from CR interactions with the ISM) to |b| ≈ 10°. The obtained upper limits (90% c.l.) to the γ-ray excess over the cosmic-ray flux from the Galactic disk region are Iγ/Ip < 0.2% for |b| < 2°, Iγ/Ip < 0.04% for |b| < 5°, and Iγ/Ip < 0.02% for |b| < 12° at E0 > 130 TeV, corresponding to upper limits to the flux of Iγ < 3.2 × 10-13 cm-2 s-1 rad-1, Iγ < 2.8 × 10-13 cm-2 s-1 rad-1, and Iγ < 4 × 10-13 cm-2 s-1 rad-1.

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Search for 100 TeV γ-ray emission from the galactic disk

Abstract

Keywords

ASJC Scopus subject areas

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