Max Tegmark's cosmology library: gp
Please click here to download the paper
described below. Since this postscript file does not
include the figures, I strongly recommend that
you download my
instead, in which
this paper constitutes Chapter 6.
if you are interested in
other research of mine.
LATE REIONIZATION BY SUPERNOVA DRIVEN WINDS
Authors: Max Tegmark, Joseph Silk & August Evrard
A model is presented in which supernova-driven winds
from early galaxies reionize the intergalactic medium by
This scenario can explain the observed absence of a
Gunn-Peterson trough in the spectra of high-redshift
providing that the bulk of these early galaxies are quite small,
no more massive than about 10^8 solar masses. It also
most of the IGM was enriched to at least 10% of current
metal content by z=5 and perhaps as early as z=15.
The existence of such
early mini-galaxies violates no spectral constraints
consistent with a pure CDM model with b<2. Since the final
radius of a typical ionized bubble is only around 100 kpc, the
induced modification of the galaxy autocorrelation function is
negligible, as is the induced angular smoothing of the CMBR.
Some of the gas swept up by shells may be observable as
pressure-supported Lyman-alpha forest clouds.
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This page was last modified July 1, 1998.