VLBI observations of expansion in Cygnus X-3

Details VLBI observations of expansion in Cygnus X-3 VLBI observations of expansion in Cygnus X-3

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331..494m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 331, Aug. 1, 1988, p. 494-508.

Astronomy and Astrophysics

Astronomy

49

Extragalactic Radio Sources, Very Long Base Interferometry, X Ray Binaries, Accretion Disks, Astronomical Models, Interstellar Extinction, Light Curve, Normal Density Functions, Radiant Flux Density, Radio Jets (Astronomy)

Scientific paper

The authors have made VLBI observations at 1.3 cm wavelength of two flares in 1985 February. The times at which flares began are consistent with the previously published period of 4.95 hr (significantly offset from the orbital period of 4.79 hr). A model of expanding synchrotron sources in a double-sided jet is applied to these data. The authors estimate the projected bulk velocity to lie between 0.16 c and 0.31 c where both statistical and systematic effects are fully accounted for, a range that includes the actual bulk velocity of SS433 (0.26 c).

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