We show that emerging tension between the direct astronomical measurements at low redshifts and cosmological parameters deduced from the Planck measurements of the cosmic microwave background anisotropies can be alleviated if the dark matter consists of two fractions, the stable part being dominant with a smaller unstable fraction. The latter constitutes about 5-10 per cent at the recombination epoch if it has decayed by now.
Reconciling Planck results with low redshift astronomical measurements
BEREJIANI, ZOURAB;
2015
Abstract
We show that emerging tension between the direct astronomical measurements at low redshifts and cosmological parameters deduced from the Planck measurements of the cosmic microwave background anisotropies can be alleviated if the dark matter consists of two fractions, the stable part being dominant with a smaller unstable fraction. The latter constitutes about 5-10 per cent at the recombination epoch if it has decayed by now.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
PhysRevD.92.061303(BDT).pdf
non disponibili
Descrizione: pdf
Tipologia:
Documento in Post-print
Licenza:
Dominio pubblico
Dimensione
233.66 kB
Formato
Adobe PDF
|
233.66 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
