Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating

  title={Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating},
  author={Kristina G. Kislyakova and Lena Noack and Colin P. Johnstone and Valery V. Zaitsev and Luca Fossati and Helmut Lammer and Maxim L. Khodachenko and Petra Odert and Manuel G{\"u}del},
  journal={Nature Astronomy},
Low-mass M stars are plentiful in the Universe and often host small, rocky planets detectable with current instrumentation. These stars host magnetic fields, some of which have been observed to exceed a few hundred gauss. Recently, seven small planets have been discovered orbiting the ultra-cool M dwarf TRAPPIST-1, which has an observed magnetic field of 600 G. We suggest electromagnetic induction heating as an energy source inside these planets. If the stellar rotation and magnetic dipole axes… 
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  • K. Kislyakova
  • Physics, Geology
    Proceedings of the International Astronomical Union
  • 2018
Abstract We propose induction heating of planetary interiors as an energy source in the planetary mantles. Induction heating arises when a changing magnetic field induces currents in a conducting
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