SH055-05
Multiscale Solar Wind Turbulence Properties inside and near Switchbacks measured by Parker Solar Probe

Wednesday, 16 December 2020: 16:20
Virtual
Mihailo Martinović1, Kristopher G. Klein1, Jia Huang2, Benjamin D G Chandran3, Justin Christophe Kasper2, Emily Rose Lichko4, Michael Louis Stevens5, Anthony W Case5, Stuart Bale6 and Parker Solar Probe SWEAP, Parker Solar Probe Fields, (1)University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ, United States, (2)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (3)University of New Hampshire, Durham, NH, United States, (4)University of Wisconsin Madison, Madison, WI, United States, (5)Smithsonian Astrophysical Observatory, Cambridge, MA, United States, (6)University of California, Berkeley, Berkeley, CA, United States
Recorded Presentation
Abstract:
Parker Solar Probe (PSP) routinely observes characteristic magnetic field deflections at distances less than 0.3 au from the Sun. These deflections are related to structures commonly called 'switchbacks' (SBs), the origins and characteristics of which are currently debated. Here, we use a database of manually selected SB intervals---and regions of solar wind plasma measured just before and after each SB---to examine plasma parameters, turbulent spectra from injection to dissipation scales, and intermittency effects in these intervals. We find that many properties, such as perpendicular stochastic heating rates and inertial- and dissipation-scale spectral slopes are fairly similar inside and outside of SBs. However, the characteristic break scale between the inertial to dissipation ranges differ in these intervals, as does the level of intermittency, which is notably enhanced inside SBs and in their close proximity, most likely due to magnetic field and velocity shears at the borders of these structures.
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