The 1982 September radio outburst of Cygnus X-3 - Evidence for jetlike emission expanding at not less than about 0.35 C

Details The 1982 September radio outburst of Cygnus X-3 - Evidence for jetlike emission expanding at not less than about 0.35 C The 1982 September radio outburst of Cygnus X-3 - Evidence for jetlike emission expanding at not less than about 0.35 C

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...273l..65g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 273, Oct. 15, 1983, p. L65-L69.

Astronomy and Astrophysics

Astronomy

85

Binary Stars, Plasma Jets, Radio Bursts, Radio Sources (Astronomy), X Ray Sources, Centimeter Waves, Cygnus Constellation, Expansion, Gamma Ray Astronomy, Microwave Spectra, Radio Interferometers

Scientific paper

The angular size of Cyg X-3 was measured at 20, 6, 2, and 1.3 cm, 10 and 21 days after a strong outburst occurred within one day of September 28, 1982. From the 1.3 and 2 cm source sizes and the date of the outburst, the expansion velocity was found to be 0.010 + or - 0.002 arcsec per day along a position angle of approximately 0 deg. The energy transport mechanism in Cyg X-3 may be similar to that in SS 433 since the ratio of major to minor axes at 1.3 and 2 cm is 4:1. If the source is at a distance in excess of 11.6 kpc, the inferred expansion speed is not less than about 0.35 c. At wavelengths longer than 6 cm, the source size varies as lambda-squared, suggesting scattering due to local thermal plasma inhomogeneities.

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