Neutron star kick velocity induced by neutrino chirality flip and a lower bound for the neutrino magnetic moment

1 Dec 2020, 10:00
30m
Talk

Speaker

Daryel Manreza Paret (Facultad de Física, Universidad de La Habana, Habana, Cuba)

Description

We study the neutrino chirality flip during the birth of a neutron star, produced in a core made of strange quark matter. This mechanism is applied to the neutron star kick velocity problem and we show that it is efficient when the neutrino magnetic moment is not smaller than $4.7 \times 10^{-15}\mu_B$, where $\mu_B$ is the Bohr magneton. When this lower bound is combined with the most stringent upper bound, our results set a range for the neutrino magnetic moment given by $4.7 \times 10^{-15} \leq \mu_\nu/\mu_B \leq (0.1 - 0.4)\times 10^{-11}$. The obtained kick velocities for natal conditions are consistent with the observed ones and span the correct range of radii for typical magnetic field intensities.

Author

Daryel Manreza Paret (Facultad de Física, Universidad de La Habana, Habana, Cuba)

Co-authors

Prof. Alejandro Ayala (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Luis Alberto Hernandez (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Mr Santiago Bernal Langarica (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Saúl Hernández-Ortiz (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico)

Presentation materials