A note on the apparent superluminal motion in radio sources

Details A note on the apparent superluminal motion in radio sources A note on the apparent superluminal motion in radio sources

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983acasn..24..388q&link_type=abstract

(Acta Astronomica Sinica, vol. 24, no. 1, 1983, p. 388-394) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 8, June 19

Astronomy and Astrophysics

Astronomy

1

Galactic Radio Waves, Light Speed, Plasmons, Radio Sources (Astronomy), Ejection, Geometry, Shock Waves

Scientific paper

The geometry of apparent superluminal motion in a relativistic shock traveling between radio sources is examined numerically. It is assumed that a spherical plasmon is ejected from the core of a galaxy and expands relativistically. The Lorentz and Doppler velocities are calculated at every point of the spherical ejected plasmon. The arrival times of photons leaving the surface and interior of the plasmon are also quantified, and thereby the appearance of the plasmon to the observer. Finally, consideration is given to the velocity difference between the extreme edges of plasmons ejected in different directions from the core. An apparent superluminal velocity is shown to be observable even if the ejection is 40-60 deg from the line of sight.

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