arXiv:0803.1585·v2·Astrophysics
Cosmological constraints on neutrino plus axion hot dark matter: Update after WMAP-5
Steen Hannestad🇩🇰 · Alessandro Mirizzi🇩🇪 · Georg G. Raffelt🇩🇪 · Yvonne Y. Y. Wong🇩🇪
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.).
Comments: 4 pages, 1 figure, uses iopart.cls; v2 matches published version