We present new constraints on possible features in the primordial inflationary density perturbation power spectrum in light of the recent cosmic microwave background anisotropy measurements from the Planck satellite. We found that the Planck data hints for the presence of features in two different ranges of angular scales, corresponding to multipoles 10< l < 60 and 150< l < 300, with a decrease in the best- fit chi(2) value with respect to the featureless "vanilla'' Lambda CDM model of Delta chi(2) similar or equal to 9 in both cases.
Updating constraints on inflationary features in the primordial power spectrum with the Planck data
Benetti M
2013-01-01
Abstract
We present new constraints on possible features in the primordial inflationary density perturbation power spectrum in light of the recent cosmic microwave background anisotropy measurements from the Planck satellite. We found that the Planck data hints for the presence of features in two different ranges of angular scales, corresponding to multipoles 10< l < 60 and 150< l < 300, with a decrease in the best- fit chi(2) value with respect to the featureless "vanilla'' Lambda CDM model of Delta chi(2) similar or equal to 9 in both cases.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
