Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...114l...1c&link_type=abstract
Astronomy and Astrophysics, vol. 114, no. 1, Oct. 1982, p. L1-L3. Research supported by the Consiglio Nazionale delle Ricerche
Astronomy and Astrophysics
Astrophysics
5
Extragalactic Radio Sources, Galactic Evolution, Gravitational Collapse, Quasars, Radio Galaxies, Astronomical Models, Galactic Nuclei, Red Shift, Stellar Evolution, Stellar Mass Accretion
Scientific paper
A novel description is presented of the evolution of quasars and radio galaxies. Downstream propagation is suggested along t of the object density from simple initial conditions, with the aid of the continuity equation and the guidance of a model-independent physical assumption, to the effect that the evolving sources derive their power from conversion of their gravitational energy in compact configuration. Relevant numerical results are presented for the source population powered by a particular class of gravitational engines, for the case of massive black holes which accrete collisional debris from a dense star cluster up to the mass stockpile's exhaustion.
Cavaliere Alfonso
Giallongo Emanuele
Messina Andrea
Vagnetti Fausto
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