The effect of reionization of the intergalactic medium of galaxy formation

Details The effect of reionization of the intergalactic medium of galaxy formation The effect of reionization of the intergalactic medium of galaxy formation

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aipc..336..446s&link_type=abstract

Dark matter. AIP Conference Proceedings, Volume 336, pp. 446-449 (1995).

Computer Science

2

Local Group, Magellanic Clouds, Kinematics, Dynamics, And Rotation

Scientific paper

The reheating which accompanies reionization exerts a negative feedback effect on small-scale structure formation. To illustrate this, we simulate the formation of structure on galactic and sub-galactic scales in the mixed Cold+Hot Dark Matter (CHDM) model, utilizing our new Adaptive SPH method. We compare the rates of structure formation in a universe which is reionized and reheated at some epoch z>~5 (as required to satisfy the H I Gunn-Peterson (GP) constraint on the IGM at z<5) to the rate of structure formation in a universe without such reheating. These results have strong implications for the comparison of the CHDM model with the observed abundance of damped Ly alpha clouds and the total H I content of the universe at z>~3.

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