Scientists get a new clue to the origin of solar wind 'switchbacks'
Scientists using the European Space Agency's Solar Orbiter have identified the origin of 'switchbacks' in the solar wind. Data suggests these magnetic kinks are formed by 'interchange reconnection' within hot magnetic loops on the Sun's surface.
Why it matters
Understanding solar wind dynamics is crucial for predicting space weather that can impact satellite communications and power grids on Earth.
Understanding why our nearest star does what it does
The European Space Agency's Solar Orbiter has enabled scientists to trace magnetic switchbacks in the solar wind's magnetic field back to their source at the Sun.
"Switchback" is the name given to an S-shaped kink in the solar wind's magnetic field – a sudden and large deflection. In 2022, the spacecraft gave scientists a full view of the structure ( confirming the S-shape ), but the origin remained up for debate. At the time, the probe's data suggested it might be near the Sun's surface, but a recent flight through a switchback allowed scientists to identify the source.
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