Kavli Affiliate: Shunsaku Horiuchi
| First 5 Authors: Kanji Mori, Tomoya Takiwaki, Kei Kotake, Shunsaku Horiuchi,
| Summary:
Axion-like particles (ALPs) are a class of hypothetical pseudoscalar
particles which feebly interact with ordinary matter. The hot plasma of
core-collapse supernovae is a possible laboratory to explore physics beyond the
standard model including ALPs. Once produced, some of the ALPs can be absorbed
by the supernova matter and affect energy transfer. In this study, we calculate
the ALP emission in core-collapse supernovae and the backreaction on supernova
dynamics consistently. It is found that the stalled bounce shock can be revived
if the coupling between ALPs and photons is as high as g_{ag}~10^{-9} GeV^{-1}
and the ALP mass is 40-400 MeV. This provides a new mechanism to obtain a
successful supernova explosion with explosion energies reaching even those of
broad-line type Ic supernovae.
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