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The Wave-regulated Precursor of a Near-parallel Interplanetary Shock Observed by Parker Solar Probe

  • Authors: I. C. Jebaraj, L. Colomban, O. V. Agapitov, M. Gedalin, M. A. Malkov, A. Kouloumvakos, E. Husidic, S. Mondal, S. Yadav, N. Wijsen

I. C. Jebaraj et al 2026 The Astrophysical Journal Letters 1008 .

  • Provider: AAS Journals

Caption: Figure 1.

Upstream plasma overview over 06:00–07:13 UT on 2023 March 13; the interval ends at the shock crossing at 07:13:13 UT. (a1) RTN magnetic field components BR, BT, BN (blue, orange, green) and total ∣B∣ (black). (a2) RTN solar-wind velocity VR, VT, VN and total ∣V∣ (colors as in panel (a1)). (a3) Electron density n (blue, left axis) and ion temperature Ti (orange, right axis). (a4) Alfvén speed vA (blue, left axis) and ion sound speed cs (orange, right axis). (a5) Thermal pressure Pth (blue), magnetic pressure PB (gold), energetic-particle pressure PEP from IS⊙IS/EPI-Lo (green), and total Ptot = Pth + PB + PEP (black).

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