Using the values obtained from the previous fit:

  • \(\beta_{\mathrm{He}}\) = 0.41
  • \(\beta_{\mathrm{H}}\) = 0.82
  • \(\Delta z_{\mathrm{He}}\) = 0.13
  • Changing \(\Delta z_{\mathrm{H}}\)

T0 and \(\tau_{eff}\)

Flux Power Spectrum: Small Scales

Flux Power Spectrum: Large Scales

Flux Power Spectrum: Middle Scales

HeII Optical Depth

Optical Depth Available Data