Erratum: Planck 2018 results: VI. Cosmological parameters

• Published in: Astronomy and astrophysics (Berlin) Vol. 652
• Main Authors: Akrami, Y., Baccigalupi, C., Banday, A. J., Benabed, K., Bernard, J. -P., Bersanelli, M., Bielewicz, P., Bond, J. R., Borrill, J., Boulanger, F., Burigana, C., Butler, R. C., Calabrese, E., Carron, J., Challinor, A., Chiang, H. C., Chluba, J., Colombo, L. L., Contreras, D., Crill, B. P., Cuttaia, F., de Bernardis, P., de Zotti, G., Delouis, J. -M., Diego, J. M., Doré, O., Douspis, M., Ducout, A., Efstathiou, G., Enßlin, T. A., Fantaye, Y., Farhang, M., Fergusson, J., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Galli, S., Gerbino, M., Ghosh, T., González-Nuevo, J., Gratton, S., Gruppuso, A., Hansen, F. K., Herranz, D., Hildebrandt, S. R., Hivon, E., Jaffe, A. H., Karakci, A., Keihänen, E., Kiiveri, K., Kim, J., Knox, L., Kunz, M., Kurki-Suonio, H., Lagache, G., Lamarre, J. -M., Le Jeune, M., Lilje, P. B., Lilley, M., Lindholm, V., López-Caniego, M., Lubin, P. M., Ma, Y. -Z., Macías-Pérez, J. F., Maggio, G., Mandolesi, N., Mangilli, A., Marcos-Caballero, A., Maris, M., Mauri, N., McEwen, J. D., Melchiorri, A., Mitra, S., Molinari, D., Moss, A., Pagano, L., Patanchon, G., Pettorino, V., Polenta, G., Puget, J. -L., Remazeilles, M., Renzi, A., Ruiz-Granados, B., Salvati, L., Sandri, M., Savelainen, M., Sirignano, C., Sirri, G., Spencer, L. D., Suur-Uski, A. -S., Tavagnacco, D., Tenti, M., Toffolatti, L., Trombetti, T., Valiviita, J., Vibert, L., Vittorio, N., Wandelt, B. D., White, S. M.
• Format: Journal Article
• Language: English
• Published: United States EDP Sciences 06.08.2021
• Subjects: addenda; ASTRONOMY AND ASTROPHYSICS; cosmic background radiation; cosmological parameters; errata
• ISSN: 0004-6361; 1432-0746

In the original version, the bounds given in Eqs. (87a) and (87b) on the contribution to the early-time optical depth, (15,30), contained a numerical error in deriving the 95th percentile from the Monte Carlo samples. The corrected 95% upper bounds are: τ(15,30) < 0:018 (lowE, flat τ(15, 30), FlexKnot), (1) τ(15, 30) < 0:023 (lowE, flat knot, FlexKnot): (2) These bounds are a factor of 3 larger than the originally reported results. Consequently, the new bounds do not significantly improve upon previous results from Planck data presented in Millea & Bouchet (2018) as was stated, but are instead comparable. Equations (1) and (2) give results that are now similar to those of Heinrich & Hu (2021), who used the same Planck 2018 data to derive a 95% upper bound of 0.020 using the principal component analysis (PCA) model and uniform priors on the PCA mode amplitudes.