- Cutoff in the Lyman-α forest power spectrum
- Warm IGM or warm dark matter?
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
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- Document type
- Faculty of Science (FNWI)
- Institute for Theoretical Physics Amsterdam (ITFA)
We re-analyse high redshift and high resolution Lyman-α forest spectra considered in , seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying reionization models. We discuss how to remove this degeneracy.
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