Cosmic string solution to the radio synchrotron background

B. Cyr; J. Chluba; S.K. Acharya

doi:10.1103/PhysRevD.109.L121301

Cosmic string solution to the radio synchrotron background

B. Cyr
, J. Chluba
, S.K. Acharya

Astronomy and Astrophysics Theory Group

Research output: Contribution to journal › Letter › peer-review

Abstract

We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension Gμ≃6.5×10-12 and current I≃2.5×106 GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon heating protects us against current constraints from global 21 cm experiments. © 2024 authors. Published by the American Physical Society.

Original language	English
Journal	Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume	109
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.109.L121301
Publication status	Published - 4 Jun 2024

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Astrophysics and Cosmology Research at the JBCA 2023-2026
Battye, R. (PI), Breton, R. (CoI), Brown, M. (CoI), Dickinson, C. (CoI), Grainge, K. (CoI), Keith, M. (CoI), Piccirillo, L. (CoI), Smith, R. (CoI), Stappers, B. (CoI) & Weltevrede, P. (CoI)
1/04/23 → 31/03/26
Project: Research

Cite this

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title = "Cosmic string solution to the radio synchrotron background",

abstract = "We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension Gμ≃6.5×10-12 and current I≃2.5×106 GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon heating protects us against current constraints from global 21 cm experiments. {\textcopyright} 2024 authors. Published by the American Physical Society.",

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T1 - Cosmic string solution to the radio synchrotron background

AU - Cyr, B.

AU - Chluba, J.

AU - Acharya, S.K.

N1 - Export Date: 23 January 2025; Cited By: 5

PY - 2024/6/4

Y1 - 2024/6/4

N2 - We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension Gμ≃6.5×10-12 and current I≃2.5×106 GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon heating protects us against current constraints from global 21 cm experiments. © 2024 authors. Published by the American Physical Society.

AB - We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension Gμ≃6.5×10-12 and current I≃2.5×106 GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon heating protects us against current constraints from global 21 cm experiments. © 2024 authors. Published by the American Physical Society.

U2 - 10.1103/PhysRevD.109.L121301

DO - 10.1103/PhysRevD.109.L121301

M3 - Letter

SN - 1550-7998

VL - 109

JO - Physical Review D: Particles, Fields, Gravitation and Cosmology

JF - Physical Review D: Particles, Fields, Gravitation and Cosmology

IS - 12

ER -

Cosmic string solution to the radio synchrotron background

Abstract

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Astrophysics and Cosmology Research at the JBCA 2023-2026

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