Neutrino Oscillation from Magnetized Strange Stars

TL;DR

This paper investigates the potential for neutrino oscillations within magnetized strange stars, considering high magnetic fields and recent mass constraints, to understand their internal properties and neutrino behavior.

Contribution

It introduces a study of neutrino oscillations in strange stars with strong magnetic fields, incorporating recent mass constraints and perturbative calculations of strange quark matter.

Findings

Neutrino oscillations can occur resonantly in strange stars with magnetic fields up to 10^{17} G.

Strange stars may host internal magnetic fields strong enough to influence neutrino behavior.

The study suggests possible observable effects of neutrino oscillations in magnetized strange stars.

Abstract

Strange-quark matter (SQM) is a likely candidate of the ground state of nuclear matter. Along with many other equations of state (EoSs), SQM seemed to be severely constrained by the recent discoveries of the 1.97 $M_\odot$ PSR J1614-2230 and the 2.01 $M_\odot$ PSR J0348+0432. However with new, $O(\alpha_c^2)$, perturbative calculations, SQM seems to be able to accommodate masses as large as $\sim 2.75 M_\odot$. The literature of SQM stars or strange stars includes estimates of internal magnetic fields as large as $10^{20}$ G, which are unlikely to be formed as they would require $\sim 10^{57}$ erg to be produced. Nonetheless, if strange stars may hold magnetar-strength fields ($10^{15}$ G), their internal fields are likely to reach magnetic fields as large as $10^{17}$ G. We consider neutrinos with energies of some MeV and oscillation parameters from solar, atmospheric and accelerator experiments. We study the possibility of resonant oscillation of neutrinos in strange stars.