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

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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.

Original languageEnglish (US)
Pages (from-to)2079-2082
Number of pages4
JournalPhysical Review Letters
Volume54
Issue number19
DOIs
StatePublished - Jan 1 1985

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