The impact and evolution of magnetic confinement in hot stars

TL;DR

This paper investigates how magnetic confinement influences the evolution of hot, massive stars, revealing new pathways to form heavy black holes and supernovae, through advanced 1D stellar models incorporating magnetic field evolution.

Contribution

It introduces the first 1D stellar evolution models that include surface effects and the evolution of fossil magnetic fields in hot stars.

Findings

Identification of new evolutionary pathways to heavy black holes.

Potential revision of parameters for observed magnetic massive stars.

Insights into long-term effects of magnetic confinement on stellar evolution.

Abstract

Magnetic confinement of the winds of hot, massive stars has far-reaching consequences on timescales ranging from hours to Myr. Understanding the long-term effects of this interplay has already led to the identification of two new evolutionary pathways to form `heavy' stellar mass black holes and pair-instability supernova even at galactic metallicity. We are performing 1D stellar evolution model calculations that, for the first time, account for the surface effects and the time evolution of fossil magnetic fields. These models will be thoroughly confronted with observations and will potentially lead to a significant revision of the derived parameters of observed magnetic massive stars.