The 4.8-hour period of gamma-rays from Cygnus X-3 at energies E greater than or equal to 2 PeV

Details The 4.8-hour period of gamma-rays from Cygnus X-3 at energies E greater than or equal to 2 PeV The 4.8-hour period of gamma-rays from Cygnus X-3 at energies E greater than or equal to 2 PeV

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc....1..135s&link_type=abstract

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

Astronomy and Astrophysics

Astronomy

1

Cosmic Ray Showers, Gamma Ray Astronomy, Periodic Variations, X Ray Sources, Histograms, Light Curve, Modulation, Time Response

Scientific paper

The 4.8 hour modulation of E ≥ 2×1015eV gamma-rays from Cygnus X-3 has been analysed in detail on the basis of experimental data of the extensive air shower experiment at Kiel. A period p0 = 0.199,681,6±0.000,000,2 d is found. For the period derivate an upper limit of p⪉ 2×10-9 is derived. The light curve has a significant narrow peak at phase 0.35 and there are indications for a second smaller peak at phase 0.65.

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