Magnetic fields of OB stars

Abstract

We studied the statistical properties of the magnetic fields of OB stars based on the recent measurements. As the statistically significant characteristic of the magnetic field we use the rms magnetic field of the star B. The distribution functions f(B) of magnetic fields of OB stars are evaluated. The function f(B) has a power-law dependence on the B with an index of about 2-3 and a fast drop below B=100 - 300 G. We proposed that the compact regions with strong local magnetic fields can contribute to the global magnetic field of O stars. © International Astronomical Union 2014.