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Unprecedented 19 Day Type IV Radio Burst as a Corotating Electron Reservoir

  • Authors: Vratislav Krupar, Oksana Kruparova, Adam Szabo, Lynn B. Wilson, Lan K. Jian, David Lario, Teresa Nieves-Chinchilla, Andreas J. Weiss, Anthony Iampietro, Hamish A. S. Reid, Lucie M. Green, Eduard P. Kontar, Rui F. Pinto, Keith Goetz

Vratislav Krupar et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 6.

STEREO-A time series at 975 kHz (blue), 1475 kHz (green), and 1925 kHz (red). Top: radio flux with smoothed trend and two broad maxima (P1, P2). Middle: degree of circular polarization V/I (negative values correspond to left-hand polarization in the STEREO/WAVES convention), reaching ∣V/I∣  ≳ 0.9 near the peaks. Bottom: wavevector azimuth with three linear fits (magenta) between P1 and P2, whose slopes yield the apparent rotation radii Rapp and the frequency-dependent scattering factors ΞF quoted in the text.

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