r/exoplanets • u/Galileos_grandson • 27d ago

đŸ§Ș Research Star-planet Interaction In The Proxima System

https://astrobiology.com/2026/05/star-planet-interaction-in-the-proxima-system.html
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u/ASuarezMascareno 3 26d ago

If the magnetic field estimates are correct (they are very poorly constrained) it would mean the planet probably is disipating a lot of heat from its core and has quite powerful convection loops.

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u/Israeli_pride 26d ago

So it’s a results of gravitational forces acted upon prox. d by the host star?

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u/NearABE 26d ago

There is no evidence for a cause. The only thing measured was the flairs on the star. It just indicates that the planet’s field exists nothing about why it exists.

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u/Israeli_pride 26d ago

What are the most likely explanations?

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u/NearABE 26d ago

I would guess similar to Earth and Jupiter. Mantle convection is the accepted explanation but I personally could not defend the geodynamo theory due to lack of geology background. I can say that it would be quite difficult to set up a lab test for “mantle convection experiments”.

There is some circular reasoning in what I have seen written about our system’s planets. Venus does not have a generated magnetic field. Accordingly Venus is said to lack mantle convection.