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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 6.

The solar wind speed gradually decreases with increasing distance from the Sun and becomes clear at about 30 au and ranges from 13% to 15% between 50.0 and 58.42 au. In the top panel we show a time series of the percent difference in the propagated solar rotation–averaged 1 au speeds in the inner heliosphere and NH in the outer heliosphere as a function of distance between NH and the Sun.

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