# PSP Bibliography

 Notice: Clicking on the DOI link will open a new window with the original bibliographic entry from the publisher. Clicking on a single author will show all publications by the selected author. Clicking on a single keyword, will show all publications by the selected keyword.

Energy Transfer, Discontinuities, and Heating in the Inner Heliosphere Measured with a Weak and Local Formulation of the Politano-Pouquet Law

 Author David, V.; Galtier, S.; Sahraoui, F.; Hadid, L.~Z.; Keywords Parker Data Used; interplanetary turbulence; Space plasmas; Solar wind; 830; 1544; 1534; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics Abstract The solar wind is a highly turbulent plasma for which the mean rate of energy transfer ɛ has been measured for a long time using the Politano-Pouquet (PP98) exact law. However, this law assumes statistical homogeneity that can be violated by the presence of discontinuities. Here, we introduce a new method based on the inertial dissipation $D _I^{\sigma }$ whose analytical form is derived from incompressible magnetohydrodynamics; it can be considered as a weak and local (in space) formulation of the PP98 law whose expression is recovered after integration in space. We used $D _I^{\sigma }$ to estimate the local energy transfer rate at scale {\ensuremath{\sigma}} from the THEMIS-B and Parker Solar Probe data taken in the solar wind at different heliospheric distances. Our study reveals that discontinuities near the Sun lead to a strong energy transfer that affects a wide range of scales {\ensuremath{\sigma}}. We also observe that switchbacks seem to be characterized by a singular behavior with an energy transfer varying as {\ensuremath{\sigma}} $^{-3/4}$, which slightly differs from classical discontinuities characterized by a {\ensuremath{\sigma}} $^{-1}$ scaling. A comparison between the measurements of ɛ and $D _I^{\sigma }$ shows that in general the latter is significantly larger than the former. Year of Publication 2022 Journal \apj Volume 927 Number of Pages 200 Section Date Published mar ISBN URL DOI 10.3847/1538-4357/ac524b