Searching for oscillations in the primordial power spectrum. II. Constraints from Planck data

In this second of two papers we apply our recently developed code to search for resonance features in the Planck CMB temperature data. We search both for log-spaced oscillations or linear-spaced oscillations and compare our findings with results of our WMAP9 analysis and the Planck team analysis. Wh...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-03, Vol.89 (6), Article 063537
Main Authors: Meerburg, P. Daniel, Spergel, David N., Wandelt, Benjamin D.
Format: Article
Language:English
Subjects:
Amplitudes
Correlation
Cosmology
Gravitation
Oscillations
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Summary:In this second of two papers we apply our recently developed code to search for resonance features in the Planck CMB temperature data. We search both for log-spaced oscillations or linear-spaced oscillations and compare our findings with results of our WMAP9 analysis and the Planck team analysis. While there are hints of log-spaced resonant features present in the WMAP9 data, the significance of these features weaken with more data. We further investigate this improvement by allowing the lensing potential to vary as well, showing mild correlation between the amplitude of the oscillations and the lensing amplitude. We conclude that none of the detected features are statistically significant.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.89.063537