On the Conservation of Spectral Properties across Interplanetary Shocks in the Inner Heliosphere

The spectral properties of interplanetary magnetic field fluctuations across different types of interplanetary (IP) shocks at 1 AU found to be almost conserved in the previous study (Park et al., 2023). Nevertheless, the spectral slope in the transition range obtained for fast reverse (FR) shocks exhibits strong flattening across the shock, which leads to less conclusive results with our limited dataset. We enlarge our dataset using PSP, Solar Orbiter, ACE, DSCOVR, STEREO and Wind, and compare fast forward (FF) and FR shocks. Furthermore, we analyze 2-year, 3-year, 12-year pristine solar wind data from Solar Orbiter, PSP, and Wind, respectively, in order to determine the relation between various plasma parameters and energy dissipating mechanisms. Once this relation is applied to IP shocks, the re-scaling of the characteristic ion lengths can be considered in the downstream. We focus predominantly on (i) the FR shocks due to their specific sources and shapes and (ii) on evolution of all shock types in the heliosphere.