Fossil field decay due to nonlinear tides in massive binaries

Context. Surface magnetic fields have been detected in 5% to 10% of isolated massive stars, hosting outer radiative envelopes. They are often thought to have a fossil origin, i.e. inherited from the stellar formation phase. Yet, magnetic massive stars are scarcer in (close) short-period binaries, as reported by the BinaMIcS collaboration. Conclusions. We predict that the turbulent Joule diffusion of fossil fields would occur in a few million years for several short-period massive binaries. Therefore, turbulent tidal flows could explain the observed dearth of some short-period magnetic binaries.

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Work Title Fossil field decay due to nonlinear tides in massive binaries
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Open Access
Creators
  1. Asif ud-Doula
Keyword
  1. MHD, tidal interactions, instabilities–waves–stars:magnetic field–stars: massive
License All rights reserved
Work Type Article
Deposited October 02, 2019

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  • Added 2019_AA_Vidal_Accepted.pdf
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