Evidence for Muon Production by Particles from Cygnus X-3

M. L. Marshak; J. Bartelt; H. Courant; K. Heller; T. Joyce; E. A. Peterson; K. Ruddick; M. Shupe; D. S. Ayres; J. Dawson; T. Fields; E. N. May; L. E. Price; K. Sivaprasad

doi:10.1103/PhysRevLett.54.2079

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Evidence for Muon Production by Particles from Cygnus X-3

M. L. Marshak, J. Bartelt^*, H. Courant, K. Heller, T. Joyce, E. A. Peterson, K. Ruddick, and M. Shupe

D. S. Ayres, J. Dawson, T. Fields, E. N. May, L. E. Price, and K. Sivaprasad^†

School of Physics, University of Minnesota, Minneapolis, Minnesota 55455

High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

^*Present address: Stanford Linear Accelerator Center, P.O. Box 4349, Stanford, Cal. 94305.
^†Present address: Department of Physics, University of Maryland, College Park, Md. 20742.

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Phys. Rev. Lett. 54, 2079 – Published 13 May, 1985

DOI: https://doi.org/10.1103/PhysRevLett.54.2079

Abstract

We have observed underground cosmic-ray muons, corresponding to a secondary flux of ∼7× $10^{- 11}$ ${cm}^{- 2}$ $s^{- 1}$ , at a depth of 1800 m water equivalent, which appear to be initiated by Cygnus X-3. This identification is based on both direction and phase coherence. The existence of such secondary muons conflicts with the current understanding of photon cascades and/or the nature and location of Cygnus X-3.

References (9)

S. Danaher et al., Nature 289, 568 (1981)
M. Samorski and W. Stamm, Astrophys. J. 268, L17 (1983)
J. Lloyd-Evans et al., Nature 305, 784 (1983)
M. van der Klis and J. M. Bonnet-Bidaud, Astron. Astrophys. 95, L5 (1981)
J. M. Dickey, Astrophys. J. 273, L71 (1983)
N. C. Rana et al., Astron. Astrophys. 141, 394 (1984)
T. Stanev, T. K. Gaisser, and F. Halzen, to be published
M. Samorski and W. Stamm, in Proceedings of the Eighteenth International Cosmic Ray Conference, Bangalore, India, edited by N. Durgaprasad (Tata Institute of Fundamental Research, Bombay, 1983), Vol. 11, p. 244
J. Bartelt et al., to be published

[c1] S. Danaher et al., Nature 289, 568 (1981)

[c2] M. Samorski and W. Stamm, Astrophys. J. 268, L17 (1983)

[c3] J. Lloyd-Evans et al., Nature 305, 784 (1983)

[c4] M. van der Klis and J. M. Bonnet-Bidaud, Astron. Astrophys. 95, L5 (1981)

[c5] J. M. Dickey, Astrophys. J. 273, L71 (1983)

[c6] N. C. Rana et al., Astron. Astrophys. 141, 394 (1984)

[c7] T. Stanev, T. K. Gaisser, and F. Halzen, to be published

[c8] M. Samorski and W. Stamm, in Proceedings of the Eighteenth International Cosmic Ray Conference, Bangalore, India, edited by N. Durgaprasad (Tata Institute of Fundamental Research, Bombay, 1983), Vol. 11, p. 244

[c9] J. Bartelt et al., to be published

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Evidence for Muon Production by Particles from Cygnus X-3

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References (9)

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