Possibility of a gravitational effect in the spectra of quasi-stellar objects. II

Details Possibility of a gravitational effect in the spectra of quasi-stellar objects. II Possibility of a gravitational effect in the spectra of quasi-stellar objects. II

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jpha....7.2236d&link_type=abstract

Journal of Physics, Part A - Mathematical, Nuclear and General, vol. 7, Nov. 21, 1974, p. 2236-2247.

Physics

2

Absorption Spectra, Gravitational Effects, Line Spectra, Quasars, Red Shift, Spectrum Analysis, Astronomical Spectroscopy, Doppler Effect, Emission Spectra, Escape Velocity, Gravitational Fields, Spectral Line Width

Scientific paper

In quasi-stellar objects, the redshifts of the spectral lines are generally different in emission and absorption. It has been proposed that quasi-stellar objects which are at cosmological distances have a small contribution to their emission redshift due to their gravitational field (gravitational emission redshift ranges from 0.01 to 0.04). The absorption takes place in clouds of gases moving under the influence of this gravitational field. Different possible types of motions have been considered for these clouds. In order to explain the sharpness of absorption lines it has been assumed that the clouds of gases were ejected with a speed less than the escape velocity, and at the time of absorption the velocity of a cloud is comparable to the velocity required for the Doppler width of the absorption lines. For illustration, the quasi-stellar objects 3C191, Ton1530 and PHL1522 have been discussed.

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