Statistics of magnetic fields on OBA stars

Abstract

Starting from recent measurements, we studied the statistical properties of the magnetic fields of OBA stars. As one of the statistically significant characteristics of the magnetic field we use the average effective magnetic field of the star, ⟨B⟩. We then investigated the distribution function f (⟨B⟩) of the magnetic fields of OBA stars. This function has a power-law dependence on ⟨B⟩, with an index of 2–3 and a fast decrease for ⟨B⟩ ≤ 300G for B–A stars and ⟨B⟩ ≤ 80G for O stars.