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Table 2
Resulting Thomson optical depths for various evolutions of CH II with redshift.
| Model | ⟨τ⟩ | σ |
|---|---|---|
| CH II = 3 | 0.0612 | 0.0013 |
| Free | 0.0570 | 0.0019 |
| HM12 | 0.0604 | 0.0020 |
| I07 | 0.0579 | 0.0027 |
References. Free: model with CH II as a fifth parameter, varying in [1, 10]; HM12: Haardt & Madau (2012), Eq. (10); I07: Iliev et al. (2007), Eq. (11).
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