Speaker
Description
The Spin Light of Neutrino (SLν) is a new possible mechanism of electromagnetic radiation by a massive neutrino (with nonzero magnetic moment) moving in media [1]. Although this effect is strongly suppressed due to smallness of neutrino magnetic moment, for ultra-high neutrino energies, for instance for PeV neutrino recently observed by the IceCube collaboration [2], consideration of the SLν is of interest in the case of neutrinos propagating in dense matter. Several astrophysical settings in which the effect might be possible, such as a neutron star, supernova, gamma-ray burst, and relic neutrino background, are considered. We also note that due to the specific polarization properties the SLν should be considered in connected with the observed polarization of GRB emission [3].
[1] A. Lobanov and A. Studenikin, Spin light of neutrino in matter and electromagnetic fields, Phys. Lett. B 564 (2003) 27; A. Studenikin and A.Ternov, Neutrino quantum states and spin light in matter, Phys.Lett. B 608 (2005) 107; A.Grigoriev, A. Studenikin,A.Ternov, Quantum theory of neutrino spin light in dense matter, Phys. Lett. B 622 (2005) 199; A.Grigoriev, A.Lokhov, A.Studenikin, A.Ternov, The effect of plasmon mass on spin light of neutrino in dense matter, Phys. Lett. B 718 (2012) 512.
[2] M. Aartsen. et al (IceCube Collaboration), A combined maximum-likelihood analysis of the high-energy astrophysical neutrino flux measured with IceCube, Astrophys. J. 809 (2015) 98.
[3] S.Covino, D.Gotz, Polarization of prompt and afterglow emission of Gamma-Ray Bursts A&AT, Vol. 29 (2016) 205.
