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The Pitch-angle Distributions of Suprathermal Ions near an Interplanetary Shock

• Authors: Liu Yang, Lars Berger, Robert F. Wimmer-Schweingruber, Linghua Wang, Jia Yu, Antoinette B. Galvin, and Eberhard Möbius

2020 The Astrophysical Journal Letters 888 L22.

• Provider: AAS Journals

Caption: Figure 3.

(a) Average velocity distribution functions of He2+ observed by the SWS during “D1,” “D2,” and “U2” indicated in Figure 2. (b)–(c) PSD averaged over wsw ∼ 1.5–4 (dashed lines in (a)) as a function of PA, normalized to its maximum among all PA bins, shown as a line plot with estimated statistical errors for the three time periods. The PSDs are obtained with applying the base rate weight in (c) and without in (b).