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

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

2008-03-11

arxiv.org/abs/0803.1585v2

JCAP 0804:019,2008

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, uses iopart.cls; v2 matches published version

Scientific paper

10.1088/1475-7516/2008/04/019

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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