Abstract
Axion emission processes in degenerate neutron-star matter in the presence of a condensate of neutral or charged pions or kaons are studied. It is found that the presence of a neutral-pion condensate enhances axion emission over ordinary neutron-star matter as drastically as it enhances neutrino emission. Owing to a quartic temperature dependence, the energy loss due to axion emission in the interior could significantly accelerate the star's thermal evolution for the values of axion parameters that are currently allowed under astrophysical considerations. In addition, it could compete with surface photon radiation for the major part of the star's cooling phase, which may result in a reduced temperature difference between the interior and the surface.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
