Curtain-like plasma structures explain solar jets' apparent spinning in simulations

Solar Jets and the Mystery of Spicules

Solar jets known as spicules in the solar atmosphere were long considered to be curved, spinning tubular structures. An international team led by a research fellow from the University of Newcastle, alongside scientists from the University of Sheffield and the Indian Institute of Astrophysics, made a breakthrough discovery. The study marks an important milestone in understanding dynamic processes on the solar surface.

Measurement Details and Curtain-Like Plasma Sheets

In simulations and analyses, these jets—measuring 6 to 8 megameters (Mm) in length—were found to take the form of warped, denser plasma sheets resembling pleated drapery rather than simple tubes. As these complex plasma sheets move along the line of sight, they create an optical illusion of spinning in computer simulations.

Impact on Solar Physics Models and Future Observations

This discovery enables more accurate modeling of magnetic field interactions and energy transport mechanisms in the solar atmosphere. Revealing the true geometry of spicules aids in resolving fundamental solar physics questions, such as coronal heating and solar wind generation, while setting new benchmarks for future solar observation missions.