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    New Theoretical Model accounts for Sun’s Rotation and Magnetic Field

    June 1, 2022, Categories  Astronomy/Space

    The model developed by the scientists includes the history of the rotation of the sun but also the magnetic instabilities that it generates. (c) Sylvia Ekström / UNIGE

    In the early 2000s, a new set of data revised the chemical abundances at the surface of the sun, contradicting the values predicted by the standard models used by astrophysicists. Often challenged, these new abundances made it through several new analyses. As they seemed to prove correct, it was thus up to the solar models to adapt, especially since they serve as a reference for the study of stars in general...

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    Solving Solar Puzzle could help save Earth from Planet-wide Blackouts

    August 9, 2021, Categories  Astronomy/Space

    Artist's image of the internal structure of the Sun. NASA
    Diagram showing the internal structure of the Sun based on existing theory that assumes circular convection cells near the solar surface. Dr Vasil’s new model suggests thinner, spinning ‘cigar-shaped’ convection cells driving the Sun’s magnetic dynamo. Image: NASA

    Scientists in Australia and in the USA have solved a long-standing mystery about the Sun that could help astronomers predict space weather and help us prepare for potentially devastating geomagnetic storms if they were to hit Earth.

    The Sun’s internal magnetic field is directly responsible for space weather — streams of high-energy particles from the Sun that can be triggered by solar flares, sunspots or coronal mass ejections that produce geomagnetic storms...

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