publication . Article . Preprint . 2017

Wavelet-Bayesian inference of cosmic strings embedded in the cosmic microwave background

Stephen Feeney; Yves Wiaux; François R. Bouchet;
Open Access English
  • Published: 01 Jan 2017
  • Publisher: HAL CCSD
Cosmic strings are a well-motivated extension to the standard cosmological model and could induce a subdominant component in the anisotropies of the cosmic microwave background (CMB), in addition to the standard inflationary component. The detection of strings, while observationally challenging, would provide a direct probe of physics at very high energy scales. We develop a new framework for cosmic string inference, constructing a Bayesian analysis in wavelet space where the string-induced CMB component has distinct statistical properties to the standard inflationary component. Our wavelet-Bayesian framework provides a principled approach to compute the posteri...
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsHigh Energy Physics::Theory
free text keywords: mathematical methods, data analysis method, string tension, performance, wavelet, cosmological model, cosmology: cosmic background radiation, cosmology: observations, methods: data analysis, methods: statistical, cosmic background radiation, cosmic background radiation: anisotropy, cosmic string, statistics: Bayesian, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], methods: data analysis; methods: statistical; cosmic background radiation; cosmology: observations, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Funded by
RCUK| Signal analysis on the sphere
  • Funder: Research Council UK (RCUK)
  • Project Code: EP/M011852/1
  • Funding stream: EPSRC
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
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