Bright phase in galactic evolution and ionization of intergalactic gas

Details Bright phase in galactic evolution and ionization of intergalactic gas Bright phase in galactic evolution and ionization of intergalactic gas

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976azh....53..459o&link_type=abstract

Astronomicheskii Zhurnal, vol. 53, May-June 1976, p. 459-474. In Russian.

Astronomy and Astrophysics

Astronomy

7

Galactic Evolution, Gas Ionization, Intergalactic Media, Red Shift, Gas Temperature, Ionizing Radiation, Optical Thickness, Thermal Radiation, Thomson Scattering

Scientific paper

Conditions are investigated under which ionization of intergalactic gas is possible at large redshifts as a result of thermal radiation from young galaxies passing through the bright phase of their evolution. Parameters of the ionizing radiation are evaluated for different models of galactic chemical evolution, and it is shown that total ionization may occur if the redshift corresponding to the beginning of the bright phase does not exceed certain values. The intergalactic-gas temperature in the ionization zone is obtained analytically along with the maximum redshift allowing total ionization. The maximum optical depth of the intergalactic gas to Thompson scattering is determined as a function of the luminosity of young galaxies as well as the moment of initiation and the duration of the bright phase. It is concluded that the optical depths required by the vortex theory of galaxy formation in order to explain the small-scale isotropy of relict radiation do not fall outside the limits of either the maximum optical depth or the applicability of the theory itself.

Affiliated with

Also associated with

No associations

Rating

Bright phase in galactic evolution and ionization of intergalactic gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bright phase in galactic evolution and ionization of intergalactic gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bright phase in galactic evolution and ionization of intergalactic gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1781949