511 KeV photons from superconducting cosmic strings

Abstract

We show that a tangle of light superconducting strings in the Milky Way could be the source of the observed 511 KeV emission from electron-positron annihilation in the Galactic bulge. The scenario predicts a flux that is in agreement with observations if the strings are at the ~ 1 TeV scale making the particle physics within reach of planned accelerator experiments. The emission is directly proportional to the galactic magnetic field and future observations should be able to differentiate the superconducting string scenario from other proposals.

Final version to appear in PRL

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Cited by in corpus (27)

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• Constraints on Light Dark Matter From Core-Collapse Supernovae
• Continuum gamma-ray emission from light dark matter positrons and electrons
• Cosmic Sparks from Superconducting Strings
• The galactic 511 keV line from electroweak scale WIMPs
• Axino Light Dark Matter and Neutrino Masses with R-parity Violation
• Diffuse MeV Gamma-rays and Galactic 511 keV Line from Decaying WIMP Dark Matter
• Gamma ray bursts and the origin of galactic positrons
• High Redshift Gamma-Ray Bursts: Observational Signatures of Superconducting Cosmic Strings?
• Electroweak Baryogenesis, CDM and Anomaly-free Supersymmetric U(1)-prime Models
• Unification of Dark Energy and Dark Matter
• 511 keV line and diffuse gamma rays from moduli
• Is There a Dark Matter Signal in the Galactic Positron Annihilation Radiation?
• On the Origin of the 511 keV Emission in the Galactic Centre
• Exciting dark matter in the galactic center
• Hunting for Dark Matter and New Physics with GECCO
• MeV Right-handed Neutrinos and Dark Matter
• Spectroscopy of a canonically quantized horizon
• The Morphology of Exciting Dark Matter and the Galactic 511 keV Signal
• Dark Matter: the Connection with Gamma-Ray Astrophysics
• Light superconducting strings in the Galaxy
• Zero modes on cosmic strings in an external magnetic field
• Dynamical simulations of colliding superconducting strings
• Positron Annihilations at the Galactic Center: Generating More Questions Than Answers
• Lumpy cosmic strings