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Nucleon Spin Fluctuations and the Supernova Emission of Neutrinos and Axions

H. -T. Janka·W. Keil·G. Raffelt·D. Seckel
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Abstract

In the hot and dense medium of a supernova (SN) core, the nucleon spins fluctuate so fast that the axial-vector neutrino opacity and the axion emissivity are expected to be significantly modified. Axions with $m_a\alt10^{-2}\,{\rm eV}$ are not excluded by SN~1987A. A substantial transfer of energy in neutrino-nucleon ($νN$) collisions is enabled which may alter the spectra of SN neutrinos relative to calculations where energy-conserving $νN$ collisions had been assumed near the neutrinosphere.

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H. -T. Janka, W. Keil, G. Raffelt, D. Seckel. 1996-02-28. Nucleon Spin Fluctuations and the Supernova Emission of Neutrinos and Axions. https://doi.org/10.1103/physrevlett.76.2621

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