| Gunn-Peterson constraint on mass of dominant DM particle | |||
|---|---|---|---|
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Universe was ionized before redshift z » 6
Ž small scale structures must have collapsed before this time Ž mass of dominant Dark Matter particle must exceed about 1 keV. |
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| Gunn-Peterson constraint on mass of dominant DM particle | |||
|---|---|---|---|
|
Universe was ionized before redshift z » 6
Ž small scale structures must have collapsed before this time Ž mass of dominant Dark Matter particle must exceed about 1 keV. |
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Reionization of the Universe
