高能暂现源 · 每日文献综述

The Spin Light of neutrino (<inline-formula> <tex-math>$ SL\nu $</tex-math> </inline-formula>) is electromagnetic radiation produced by the neutrino magnetic moment when a neutrino moves under external conditions, such as fields or matter. This effect may be significant in the extremely dense matter of compact astrophysical objects, such as neutron stars (NS). If detected, this radiation could provide a valuable opportunity to study the properties of neutrinos and of the medium through which they move, because the properties of the radiation depend on both. Motivated by the possibility of nuclear matter spin polarization, in this paper, we study the new properties of <inline-formula> <tex-math>$ SL\nu $</tex-math> </inline-formula> that arise under the influence of net matter polarization. We demonstrate that polarization can either enhance or completely suppress the radiation. It also introduces a characteristic asymmetry into the total radiation from the compact object, which could be an observable feature depending on the matter polarization and the magnetic field inside the star, if the field is connected to the stellar matter polarization. This research may have implications for the physics of NS and magnetars, bringing us closer to the possibility of studying their internal structure.