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arXiv · 0803.1585

Cosmological constraints on neutrino plus axion hot dark matter: Update after WMAP-5

Steen Hannestad·Alessandro Mirizzi·Georg G. Raffelt·Yvonne Y. Y. Wong
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Abstract

We update our previous constraints on two-component hot dark matter (axions and neutrinos), including the recent WMAP 5-year data release. Marginalising over sum m_nu provides m_a < 1.02 eV (95% C.L.) for the axion mass. In the absence of axions we find sum m_nu < 0.63 eV (95% C.L.).

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Steen Hannestad, Alessandro Mirizzi, Georg G. Raffelt, Yvonne Y. Y. Wong. 2008-04-08. Cosmological constraints on neutrino plus axion hot dark matter: Update after WMAP-5. https://doi.org/10.1088/1475-7516%2F2008%2F04%2F019

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