Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The field strength predicted at the surface of massive stars. The prediction assumes an equipartition dynamo in the convective layer and a B∝ρ2/3 dependence in the overlying radiative layer. Also shown are the X-ray luminosities measured in a number of stars: there does seem to be some connection between subsurface convection and X-ray emission. The dotted lines are evolutionary tracks of stars of various initial masses. From Cantiello & Braithwaite [202].
