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Degeneracy between primordial tensors modes and cosmic strings in future CMB data from the Planck satellite

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posted on 2023-06-07, 23:18 authored by Jon Urrestilla, Pia Mukherjee, Andrew R Liddle, Neil Bevis, Mark HindmarshMark Hindmarsh, Martin Kunz
While observations indicate that the predominant source of cosmic inhomogeneities are adiabatic perturbations, there are a variety of candidates to provide auxiliary trace effects, including inflation-generated primordial tensors and cosmic defects which both produce B-mode cosmic microwave background polarization. We investigate whether future experiments may suffer confusion as to the true origin of such effects, focusing on the ability of Planck to distinguish tensors from cosmic strings, and show that there is no significant degeneracy.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1050-2947

Issue

12

Volume

77

Pages

5.0

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-10

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