Very high energy gamma rays from Cygnus X3?

Details Very high energy gamma rays from Cygnus X3? Very high energy gamma rays from Cygnus X3?

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc....1..127m&link_type=abstract

IN: International Cosmic Ray Conference, 18th, Bangalore, India, August 22-September 3, 1983, Conference Papers. Volume 1 (A85-2

Computer Science

Energetic Particles, Energy Spectra, Gamma Rays, Light Curve, Radiant Flux Density, X Ray Sources, Amplitude Modulation, Cerenkov Counters, Cosmic Ray Showers, Periodic Variations, Phase Modulation

Scientific paper

The high energy gamma ray emission from Cygnus X3 has been studied by measuring the arrival directions of small air showers (Eo of about 3 x 10 to the 13th eV) at mountain altitude. The analysis of 1.8 x 10 to the 5th showers within 5 degrees from the source indicates a periodic component (P approximately 4.8 h) at a 99 percent confidence level. A peak (2.8 s.d.) observed at phase 0.60-0.65 conicides with the maximum of the X-ray emission, and the corresponding flux is s = 4.2 + or - 1.5 x 10 to the -12th ph per sq cm s. A preliminary analysis indicates a 34.1 d phase and amplitude modulation.

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