Switchback-like structures observed by Solar Orbiter

Context. Rapid polarity reversals of the radial heliospheric magnetic field were discovered by Ulysses and they are now frequently observed as a common near-Sun phenomenon NASA’s Parker Solar Probe (PSP). Other solar wind missions, including ESA-NASA Orbiter (SolO), also observe similar phenomena. The nature these fluctuations is unclear, relation between “switchbacks” near Sun events at 1 AU unknown. Aims. We make detailed case study SolO plasma data obtained in region that magnetically connected to coronal hole. aim check whether such might have same origin PSP. Methods. used PSP support our analysis data. data, electron pitch angle distributions, proton velocity distribution functions, ? -particle parameters measured perform perturbations. Results. On 27 September 2020, located around Carrington longitude their latitudinal separation was very small. during this time interval confirms (at least certain times) both spacecraft does originate from hole intervals, experiences several short variations regularly Conclusions. suprathermal distributions speed indicate line bent 180° shear. Variations functions suggest lines reconnect with each other, producing flux ropes. ropes be surviving modified remains switchbacks created