Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980acasn..21....1l&link_type=abstract
Acta Astronomica Sinica, vol. 21, Mar. 1980, p. 1-6. In Chinese, with abstract in English.
Astronomy and Astrophysics
Astronomy
5
Angular Velocity, Doppler Effect, Galactic Rotation, Quasars, Red Shift, Galactic Nuclei, Relativistic Effects, Stellar Motions
Scientific paper
The effect of transverse velocity on the redshift has been discussed by some authors. In this paper it is argued that the transverse velocity could never be larger than the velocity of light no matter how large the angular velocity is, if the relativistic Doppler formula containing the term of transverse velocity is used. Based on the strict relativistic Doppler formula and Hubble law, the transverse velocities and the distances of some quasars with known proper motions are calculated. It turns out that the transverse velocities of all these quasars are less than c, and the distances of quasars reduce to 1-10 Mpc; correspondingly, the size of the quasars is comparable with that of nuclei of galaxies (about 0.2 kpc). Furthermore, for testing the hypothesis that some quasars can be regarded as the ejections from their companion galaxies the expected values of the proper motions are given from the differences of the redshift between them.
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