Reheating the intergalactic medium under extremal conditions

Details Reheating the intergalactic medium under extremal conditions Reheating the intergalactic medium under extremal conditions

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..387s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 387-389.

Astronomy and Astrophysics

Astrophysics

High Temperature Plasmas, Intergalactic Media, Radiant Heating, Astronomical Models, H Lines, Helium, Red Shift

Scientific paper

Previously published studies on the recombination epoch of a hypothetical closure density IGM are extended to the reheating phase. Extremal heating rates are sought and compared to normal ones. The minimal rate is ≡10-31ergs s-1cm-3, and it must commence heating the IGM at a redshift no greater than ≡28. Normal galactic heating rates are ≡10-30ergs s-1cm-3 and must be initiated at a redshift no later than ≡23. At heating rates ⪆10-27ergs s-1cm-3 over redshift intervals ⪉10-5 ionization equilibrium is not maintained; such impulsive heating lacks credible sources and yields line emission radiation far in excess of observations.

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