Quasi-stellar objects as rotating magnetic superstars. I - Luminosity and density evolution

Details Quasi-stellar objects as rotating magnetic superstars. I - Luminosity and density evolution Quasi-stellar objects as rotating magnetic superstars. I - Luminosity and density evolution

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..85....3s&link_type=abstract

Astrophysics and Space Science, vol. 85, no. 1-2, July 1982, p. 3-15.

Astronomy and Astrophysics

Astrophysics

2

Magnetic Stars, Mass To Light Ratios, Quasars, Stellar Evolution, Stellar Luminosity, Density Distribution, Galactic Evolution, Galactic Nuclei, Stellar Mass Ejection, Stellar Models

Scientific paper

QSO luminosity and density evolution are examined in the framework of the magnetic superstar model. It is assumed that mass from old stars in massive galaxies cools and then falls into the center to form a nuclear disk, and that magnetic superstars in galactic nuclei condense out of gaseous material at the center of a supermassive magnetized disk. It is shown that the nonthermal (synchrotron) optical luminosity varies as (L-cubed)(t to the -7/3 power), where L is the total blue luminosity of old stars in the galaxy and t is cosmic time. It is also shown that QSO co-moving density varies as exp -(t/t Evol) to the 16/15 power, with an evolution timescale t Evol = 1.95 billion years.

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