Recurrent 3He-rich solar energetic particle injections observed by Solar Orbiter at ∼0.5 au | Astronomy & Astrophysics (A&A)

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Recurrent 3He-rich solar energetic particle injections observed by Solar Orbiter at ∼0.5 au | Astronomy & Astrophysics (A&A)
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Latest research provides scientists close-up views of energetic particle jets ejected from the sun swri

shows SDO AIA and Solar Orbiter EUI HRI_EUV EUV images of the area where recurrent injections originated. The high-resolution EUI HRI_EUV image is shown at the time closest to the recurrent injection #2 . We lack high-resolution EUI observations at times of the injections’ associated type III radio bursts. To account for light travel time between Solar Orbiter at 0.55 au and SDO at 0.99 au, the AIA image is shown at a later time to compare with the EUI image.

There is likely no single factor that affects the observed abundance and spectral variability in recurrent injections. We saw that these properties vary with the size and shape of the associated jets and the distribution of the photospheric field. Solar Orbiter EUI, providing high-resolution EUV imaging observations from a closer distance to the Sun, disclosed features that were not seen from 1 au. Specifically, theHe-rich SEPs’ source showed a network of crisscrossing loops that might be prone to repeated reconnection.

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