Erratum for: A&A, 693, A198 (2025), https://doi.org/10.1051/0004-6361/202450945

A correction in 1 MeV electron peak intensities measured at Parker Solar Probe (PSP) is reported in the SERPENTINE SEP event catalog at https://doi.org/10.5281/zenodo.10732268, which was the main database used in Farwa et al. (2025). We updated the 1 MeV electron peak intensities measured by PSP in our study and noticed that these measurements are now systematically lower than STEREO A measurements. Because a re-normalization of PSP 1 MeV electron peak intensities was already applied in our original work (Farwa et al. 2025), the results of the study change only slightly, with no effect on the conclusions. However, we redetermined the inter-calibration factor for 1 MeV electrons measured by PSP based on a comparison with STEREO/HET measurements as presented in Appendix B of Farwa et al. (2025). The new analysis is shown in Fig. 1. The correct re-normalization factor obtained for the 1 MeV electrons is $C_{1\mathrm{MeV}}^{\mathrm{PSP}}=3.84$. Applying this re-normalization factor to 1 MeV electron peak intensities, we found that only Fig. 3 (lower panel) in Farwa et al. (2025), which shows electron-to-proton peak intensity ratios, has a noticeable change in the position of PSP points. The updated figure is shown in Fig. 2.

Fig. 1. Re-normalization applied to corrected PSP measurements for 1 MeV electrons. Left: Fits applied to STEREO A/HET and PSP data points for 1 MeV electrons. Right: Results of PSP re-normalization applied to 1 MeV electrons. The orange and purple plus signs represent the PSP data points before and after the re-normalization, respectively. This figure addresses the correction applied to Fig. B.3 (upper panel) of Farwa et al. (2025).

Fig. 2. Electron-to-proton peak intensity ratios for 1 MeV electrons using the updated PSP measurements as a function of ≥25 MeV proton peak intensities for well-connected (left), western (middle), and eastern (right) events. This figure addresses the correction applied to Fig. 3 (lower panel) of Farwa et al. (2025).

Farwa et al. (2025) report various correlation coefficients (CCs), whose significance does not change after updating the 1 MeV electron PSP values. The changes in CCs are all minor. The original table of CCs from Farwa et al. (2025) is reproduced in Table 1; the values that changed are highlighted in red. Note that the last column refers to the figure numbers in Farwa et al. (2025).

Data availability

The comprehensive table of all parameters employed in Farwa et al. (2025) for the analyzed solar energetic particle event sample has been updated accordingly at Zenodo at https://doi.org/10.5281/zenodo.15650284.

References

© The Authors 2025

All Tables

All Figures

Fig. 1. Re-normalization applied to corrected PSP measurements for 1 MeV electrons. Left: Fits applied to STEREO A/HET and PSP data points for 1 MeV electrons. Right: Results of PSP re-normalization applied to 1 MeV electrons. The orange and purple plus signs represent the PSP data points before and after the re-normalization, respectively. This figure addresses the correction applied to Fig. B.3 (upper panel) of Farwa et al. (2025).

In the text

	Fig. 2. Electron-to-proton peak intensity ratios for 1 MeV electrons using the updated PSP measurements as a function of ≥25 MeV proton peak intensities for well-connected (left), western (middle), and eastern (right) events. This figure addresses the correction applied to Fig. 3 (lower panel) of Farwa et al. (2025).
In the text