By Samuel Wharton (University of Leicester)
Magnetosheath jets are regions of enhanced solar wind density that form inside the magnetosheath and can locally compress the magnetopause, generating space weather effects. The higher density of the jet should result in it being brighter in soft X-rays due to the greater occurrence of the solar wind change exchange mechanism. It has been theorised by many authors they might be visible to a soft X-ray imager.
We simulated magnetosheath jets and calculated the X-ray flux expected from them at a soft X-ray imager. We found that it was difficult to resolve the jets due to the LOS integration effect and the noise within the images. However, viewing jets is more likely from viewing angles where the path length through the magnetosheath is short and there is a strong contrast between the jet and its surroundings in the image. Strong solar wind driving is also required so the emission is greater than the astrophysical background. This could be achieved with a larger telescope than SMILE-SXI that would be practical to build.
See publication for more details:
https://academic.oup.com/rasti/article/doi/10.1093/rasti/rzag059/8760917

Simulations of a magnetosheath jet seen from SMILE-SXI from three different viewing positions. The left column shows the intensity of X-rays entering the telescope. The middle column shows the expected count rate on the detector without noise. The right column shows a realistic image with Poisson noise applied.