The Radial Variation of Suprathermal Particles in Stream Interaction Regions: Comparisons between Solar Orbiter, ACE, and STEREO-A - Allen, R.C.; Ho, G.C.; Mason, G.M.; Kouloumvakos, A.; Li, G.; Filwett, R.J.; Dayeh, M.; Walker, M.H.; Vines, S.K.; Wimmer-Schweingruber, R.F.; Rodriguez-Pacheco, J. (Astrophysical Journal, 2025)