Research Article

Cosmic Dark Radiation and Neutrinos

Table 3

Marginalized 68% c.l. constraints on and and 95% cl upper bounds on in extended models with massive neutrinos. We also include the lensing amplitude as a free parameter.

ā€‰ Planck + WP + highL Planck + WP + highL Planck + WP + highL + Planck + WP + highL + DR9 Planck + WP + highL + DR9 +


[eV] <0.64 <1.03 <0.66 <0.66 <0.51