Upper limit to the flux of neutral particles from Cygnus X-3 above 5 X 10 to the 17th eV

Details Upper limit to the flux of neutral particles from Cygnus X-3 above 5 X 10 to the 17th eV Upper limit to the flux of neutral particles from Cygnus X-3 above 5 X 10 to the 17th eV

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvl..63.1121l&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 63, Sept. 11, 1989, p. 1121-1124. Research supported by SERC.

Physics

23

Cosmic Ray Showers, Energetic Particles, Neutral Particles, Particle Flux Density, X Ray Binaries, Arrays, Cerenkov Counters, Cygnus Constellation, Hadrons, Histograms

Scientific paper

Data recorded by the Haverah Park extensive air-shower array above 5 x 10 to the 17th eV have been analyzed to search for a neutral particle signal from Cygnus X-3 as reported by the Fly's Eye group. For the period 1974 to 1987 a 95 percent upper limit of 4 x 10 to the -18th particles/sq cm/s was obtained, in significant disagreement with the Fly's Eye signal of (2.0 + or - 0.6) x 10 to the -17th particles/sq cm/s. The limit assumes that the neutral particles are hadronlike. For gamma-ray primaries the limit is weakened to 8 x 10 to the -18th photons/sq cm/s because of the reduced sensitivity of the Haverah Park array to photon primaries.

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