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The Gradual Slowing of the Solar Wind in the Outer Heliosphere

  • Authors: Heather A. Elliott, Tae K. Kim, John D. Richardson, Justyna M. Sokół, Bishwas L. Shrestha, Eric J. Zirnstein, David J. McComas, Paweł Swaczyna, Merav Opher, Maher A. Dayeh, Matthew E. Hill, Andrew Poppe, S. Alan Stern, Pontus C. Brandt, Kelsi Singer, Joel Parker, Anne J. Verbiscer

Heather A. Elliott et al 2026 The Astrophysical Journal 1001 .

  • Provider: AAS Journals

Caption: Figure 2.

Beginning in late 2018 through early 2023, an extended interval of slow solar wind speed (demarcated in pink) was detected at NH. Top: a time series of solar wind speed measurements spanning from 2011 October 23 through 2024 March 15 (21.35–58.42 au) measured by the SWAP plasma sensor on the NH spacecraft. Bottom: corresponding time series of the distance between NH and the Sun and the latitude of NH.

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