Electromagnetic radiation from axion condensates in a time dependent magnetic field

Journal Article · 31 May 2022 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/jhep05(2022)192 · OSTI ID:1976482

Sen, Srimoyee ^[1]; Sivertsen, Lars  ^[2]

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1. Iowa State University, Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
2. Iowa State University, Ames, IA (United States)

Time dependent magnetic fields can be sourced by spinning neutron stars, orbiting binaries and merging neutron stars. We consider electromagnetic radiation from axion condensates in the background of an alternating magnetic field. We find that a resonant peak in radiation can occur when the frequency of the alternating magnetic field is comparable with the axion mass scale. More interestingly, in situations where the frequency of the alternating magnetic field itself changes with time, as can be the case in binary mergers due to a steady increase in orbital frequency, the resonant peak in radiation may occur for a range of axion mass scales scanned by the time-varying magnetic field frequency.

• Research Organization: Iowa State University, Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: SC0021892
• OSTI ID: 1976482
• Journal Information: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 5 Vol. 2022; ISSN 1029-8479
• Publisher: Springer NatureCopyright Statement
• Country of Publication: United States
• Language: English