The interaction of matter and radiation in the hot model of the Universe, II

Details The interaction of matter and radiation in the hot model of the Universe, II The interaction of matter and radiation in the hot model of the Universe, II

Apr 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970ap%26ss...7...20s&link_type=abstract

Astrophysics and Space Science, Volume 7, Issue 1, pp.20-30

Astronomy and Astrophysics

Astrophysics

136

Scientific paper

Heating of the primaeval plasma prior to the epoch of recombination results in distortions in the Rayleigh-Jeans region of the microwave relic radiation spectrum (λ˜1 60 cm, or more exactly λ=2.5Ω-7/8 cm). The present observational data allow limits to be set to such energy injection from which follow upper limits to (a) the amount of antimatter in the universe; (b) the parameters of primaeval turbulence; and (c) the adiabatic fluctuation spectrum for small masses (M<1011 M &sun;). If the heating takes place prior to the epocht=1010Ω12/5 sec (and in particular at the annihilation of electron-positron pairs atT˜108 1010 K,t<300 sec), no observable distortions are expected in the relic radiation spectrum. Here Ω=ϱ/ϱcrit is the dimensionless average density of matter in the universe.

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