LIGHT SUPERCONDUCTING STRINGS IN THE GALAXY

Author:

FERRER FRANCESC1,VACHASPATI TANMAY1

Affiliation:

1. CERCA, Department of Physics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7079, USA

Abstract

Observations of the Milky Way by the SPI/INTEGRAL satellite have confirmed the presence of a strong 511 keV gamma ray line emission from the bulge, which requires an intense source of positrons in the galactic center. These observations are hard to account for by conventional astrophysical scenarios, whereas other proposals, such as light DM, face stringent constraints from the diffuse gamma ray background. Here we suggest that light superconducting strings could be the source of the observed 511 keV emission. The associated particle physics, at the ~ 1 TeV scale, is within the reach of planned accelerator experiments, while the distinguishing spatial distribution, proportional to the galactic magnetic field, could be mapped by SPI or by future, more sensitive satellite missions.

Publisher

World Scientific Pub Co Pte Lt

Subject

Space and Planetary Science,Astronomy and Astrophysics,Mathematical Physics

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. The morphology of exciting dark matter and the galactic 511 keV signal;Journal of Cosmology and Astroparticle Physics;2023-11-01

2. Shocks waves in cosmic strings: Growth of current;Physical Review D;2012-05-29

3. The 511 keV emission from positron annihilation in the Galaxy;Reviews of Modern Physics;2011-09-29

4. Current discontinuities on superconducting cosmic strings;Journal of Experimental and Theoretical Physics;2011-07

5. B-L cosmic strings in heterotic standard models;J HIGH ENERGY PHYS;2010

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