Baryon concentration in string wakes at Z greater than about 200 - Implications for galaxy formation and large-scale structure

Details Baryon concentration in string wakes at Z greater than about 200 - Implications for galaxy formation and large-scale structure Baryon concentration in string wakes at Z greater than about 200 - Implications for galaxy formation and large-scale structure

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.222p..27r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 222, Oct. 1, 1986, p. 27P-32P.

Other

54

Baryons, Density Distribution, Galactic Evolution, Galactic Structure, Gravitational Effects, String Theory, Collisionless Plasmas, Jeans Theory, Radiant Cooling

Scientific paper

Strings with dimensions comparable to the horizon scale at cosmic time, t, create sheet-like wakes of thickness (Gmu)ct. After recombination (t greater than trec), the gas in such wakes undergoes molecular cooling, and gets sufficiently compressed for Jeans instability to ensue. Similar effects may occur in the linear wakes induced by much smaller loops which move with high velocities. In consequence, a fractioon (Gmu) of the baryons may condense into bound systems as early as z greater than about 200. (Gmu) = 10 to the -6th, the direct gravitational effect of the strings is unimportant on large scales. Nevertheless, if galaxy formation had been influenced by the energy output (or by some other environmental effect) of these first systems, the inhomogeneous distribution of galaxies on scales up to 100 Mpc (the comoving scale of the horizon at trec) may delineate the wake configuration at t = trec.

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