Skip to main content

Research Repository

See what's under the surface

Advanced Search

Semi-analytic calculation of cosmic microwave background anisotropies from wiggly and superconducting cosmic strings

Rybak, I. Yu; Avgoustidis, Anastasios; Martins, C.J.A.P.

Authors

I. Yu Rybak Ivan.Rybak@astro.up.pt

Anastasios Avgoustidis anastasios.avgoustidis@nottingham.ac.uk

C.J.A.P. Martins Carlos.Martins@astro.up.pt



Abstract

We study how the presence of world-sheet currents affects the evolution of cosmic string networks, and their impact on predictions for the cosmic microwave background (CMB) anisotropies generated by these networks. We provide a general description of string networks with currents and explicitly investigate in detail two physically motivated examples: wiggly and superconducting cosmic string networks. By using a modified version of the CMBact code, we show quantitatively how the relevant network parameters in both of these cases influence the predicted CMB signal. Our analysis suggests that previous studies have overestimated the amplitude of the anisotropies for wiggly strings. For superconducting strings the amplitude of the anisotropies depends on parameters which presently are not well known-but which can be measured in future high resolution numerical simulations.

Journal Article Type Article
Publication Date Nov 28, 2017
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 96
Issue 10
Article Number 103535
APA6 Citation Rybak, I. Y., Avgoustidis, A., & Martins, C. (2017). Semi-analytic calculation of cosmic microwave background anisotropies from wiggly and superconducting cosmic strings. Physical Review D, 96(10), doi:10.1103/PhysRevD.96.103535
DOI https://doi.org/10.1103/PhysRevD.96.103535
Publisher URL https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.103535
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

Files

wiggly_PRDaccepted.pdf (5 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations

;