Cosmological and astrophysical constraints on superconducting cosmic strings

Abstract

We investigate the cosmological and astrophysical constraints on superconducting cosmic strings (SCSs). SCS loops emit strong bursts of electromagnetic waves, which might affect various cosmological and astrophysical observations. We take into account the effect on the CMB anisotropy, CMB blackbody spectrum, BBN, observational implications on radio wave burst and X-ray or gamma-ray events, and stochastic gravitational wave background measured by pulsar timing experiments. We then derive constraints on the parameters of SCS from current observations and estimate prospects for detecting SCS signatures in on-going observations. As a result, we find that these constraints exclude broad parameter regions, and also that on-going radio wave observations can probe large parameter space.

31 pages, 9 figures

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Cited by in corpus (15)

• Time-domain Implementation of the Optimal Cross-Correlation Statistic for Stochastic Gravitational-Wave Background Searches in Pulsar Timing Data
• Implications of fast radio bursts for superconducting cosmic strings
• Constraints on Superconducting Cosmic Strings from the Global $21$-cm Signal before Reionization
• Inflation, String Theory and Cosmology
• Pulsar-timing measurement of the circular polarization of the stochastic gravitational-wave background
• Gravitational wave emission from metastable current-carrying strings in $E_6$
• Massive black holes at high redshifts from superconducting cosmic strings
• Superconducting cosmic strings as sources of cosmological fast radio bursts
• Emission of gravitational waves by superconducting cosmic strings
• Charge-velocity-dependent one-scale linear model
• Gravitating superconducting solitons in the (3+1)-dimensional Einstein gauged non-linear sigma-model
• Exact \textit{pp}-waves, (A)dS waves and Kundt spaces in the Abelian-Higgs model
• Can Superconducting Cosmic Strings Piercing Seed Black Holes Generate Supermassive Black Holes in the Early Universe?
• Dynamical simulations of colliding superconducting strings
• Lumpy cosmic strings