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MHD wave turbulence in space plasmas

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  • UserSébastien Galtier (Université Paris-Saclay)
  • ClockMonday 24 November 2025, 16:00-17:00
  • HouseMR14 DAMTP and online.

If you have a question about this talk, please contact Mattias Brynjell-Rahkola .

Waves and turbulence are two fundamental characteristics of space plasmas. In this context, it seems natural to rely on wave turbulence theory to interpret in situ data, such as that provided by PSP /MMS (NASA), whose degree of precision is unique in astrophysics. In this seminar, I will review recent observations and theoretical results on MHD wave turbulence, then focus on the case of compressible MHD in the limit of low beta, for which we can prove that the Iroshnikov-Kraichnan spectrum is an exact solution.

References:

S. Galtier, Fast magneto-acoustic wave turbulence and the Iroshnikov-Kraichnan spectrum, J. Plasma Physics 89 (2023)

S. Galtier, Physics of wave turbulence, Cambridge University Press (2022)

This talk is part of the DAMTP Astrophysics Seminars series.

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https://zoom.us/j/834693107?pwd=SzhzMXdPbmJJOHJubEFpZm8rVnRkZz09 Meeting ID: 834 693 107 - Passcode: 533456 Mahanakorn Laboratory, EEE Department of Computer Science and technology, FW26

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