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<strong>Axion</strong> Hot Dark Matter Limits from Precision Data<br />
Georg Raffelt, Max-Planck-Institut für Physik, München, Germany<br />
PONT d‘Avignon, 21-25 April 2008, Avignon, France<br />
Credible regions for neutrino plus axion hot<br />
dark matter (WMAP-5, LSS, BAO, SNIa)<br />
Hannestad, Mirizzi, Raffelt & Wong<br />
[arXiv:0803.1585]<br />
Marginalizing over unknown neutrino hot dark matter component<br />
m a<br />
m a<br />
< 1.0 eV (95% CL)<br />
WMAP-5, LSS, BAO, SNIa<br />
< 0.4 eV (95% CL) WMAP-3, small-scale scale CMB,<br />
HST, BBN, LSS, Ly-α<br />
Hannestad, Mirizzi, Raffelt<br />
& Wong [arXiv:0803.1585[<br />
arXiv:0803.1585]<br />
Melchiorri, Mena & Slosar<br />
[arXiv:0705.2695]
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