Radiative transfer in stars by feebly interacting bosons
arXiv:2204.11862 · doi:10.1088/1475-7516/2022/08/045
Abstract
Starting from first principles, we study radiative transfer by new feebly-interacting bosons (FIBs) such as axions, axion-like particles (ALPs), dark photons, and others. Our key simplification is to include only boson emission or absorption (including decay), but not scattering between different modes of the radiation field. Based on a given distribution of temperature and FIB absorption rate in a star, we derive explicit volume-integral expressions for the boson luminosity, reaching from the free-streaming to the strong-trapping limit. The latter is seen explicitly to correspond to quasi-thermal emission from a "FIB sphere" according to the Stefan-Boltzmann law. Our results supersede expressions and approximations found in the recent literature on FIB emission from a supernova core and, for radiatively unstable FIBs, provide explicit expressions for the nonlocal ("ballistic") transfer of energy recently discussed in horizontal-branch stars.
arXiv comment30 pages, 13 figures. Version published in JCAP
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Cited by in corpus (6)
- Strong Supernova 1987A Constraints on Bosons Decaying to Neutrinos
- Strong supernovae bounds on ALPs from quantum loops
- Proto-neutron stars as cosmic factories for massive axion-like-particles
- Improved stellar limits on a light CP-even scalar
- Chiral in FASER, FASER2, DUNE, and ILC beam dump experiments
- Enhanced neutrino polarizability