The X-ray ephemeris of Cygnus X-3

Details The X-ray ephemeris of Cygnus X-3 The X-ray ephemeris of Cygnus X-3

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...214..203v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 214, no. 1-2, April 1989, p. 203-208.

Astronomy and Astrophysics

Astrophysics

79

Ephemeris Time, Light Curve, X Ray Binaries, Apsides, Cygnus Constellation, Exosat Satellite, Stellar Orbits

Scientific paper

A set of 17 measurements of the arrival time of the 4.8-hr period of the X-ray binary Cygnus X-3 over an interval of 2.3 yr are derived from Exosat data. These measurements are combined with previous data to study the period of Cygnus X-3 for the period 1970-1985. A cubic ephemeris with a 99.9 percent confidence fit to the data is presented with an average period derivative of -1.6 + or - 0.4 X 10 to the -10th/yr.

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