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arXiv · 0808.0814

Axion hot dark matter bounds

G. Raffelt·S. Hannestad·A. Mirizzi·Y. Y. Y. Wong
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Abstract

We derive cosmological limits on two-component hot dark matter consisting of neutrinos and axions. We restrict the large-scale structure data to the safely linear regime, excluding the Lyman-alpha forest. We derive Bayesian credible regions in the two-parameter space consisting of m_a and sum(m_nu). Marginalizing over sum(m_nu) provides m_a<1.02 eV (95% CL). In the absence of axions the same data and methods give sum(m_nu)< 0.63 eV (95% CL).

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G. Raffelt, S. Hannestad, A. Mirizzi, Y. Y. Y. Wong. 2008-08-06. Axion hot dark matter bounds. https://arxiv.org/abs/0808.0814

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