Abstract

Hypothetical, pseudoscalar particles would be abundantly emitted from the interior of white dwarfs through bremsstrahlung processes. These stars would then rapidly cool. From the observed number of hot degenerates we find a new bound on the Yukawa coupling to electrons of g < 4 × 10 −13. For “invisible axions” this translates into a new bound on the Peccei-Quinn scale of v > 1 × 10 9 GeV, corresponding to m a < 3 × 10 −2 eV.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.