MHD SIMULATIONS
work of
Alicia Moranchel-Basurto,
Daniela Korčáková ,
Raul Ortega Chametla
published results: Moranchel-Basurto et al. (2023)
(2024)
We use the observed properties of IRAS 17449+2320 and other FS CMa stars as initial conditions
for PLUTO code. Our 2.5D magneto-hydrodynamic simulations show that in the presence of the magnetic field
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the circumstellar disk becomes wider
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inhomogenities in the disk are created - matter concentration and gaps
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the wind from the disk is formed
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a hot plasmoid is created
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jet originates from the inner disk
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wind, jets and hot plasmoid, all supply the material into the "coronal" region
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the magnetic field lines are strongly and rapidly twisted
This is highly unstable configuration. The magnetic field reconnection must take place there. The released
energy heats the matter surrounding the disk and may create a hot corona. Indeed, we found Raman lines
in three FS CMa stars.
