Planck 2018 结果. VII. CMB 的各向同性与统计特性
宇宙学与河外天体物理
2020-09-16 v2
摘要
对 Planck 2018 数据集的分析表明，宇宙微波背景（CMB）温度各向异性的统计性质与之前使用 2013 和 2015 数据发布的研究结果高度一致。特别是，它们与 CDM 宇宙学模型的高斯预言相符，同时也确认了在大角尺度上存在若干所谓的“异常”。然而，当前研究的新颖之处在于首次尝试利用斯托克斯参数 和 的图，或通过这些参数采用新方法（我们在附录中描述）导出的 模信号，对全角尺度上的偏振信号统计进行综合分析。尽管在降低污染 2015 偏振图大角尺度的系统效应方面已取得显著进展，但残余系统效应（以及我们模拟它们的能力）仍可能限制某些非高斯性和各向同性检验。然而，应用于这些图的详细零检验表明，在中和大角尺度（即 ）上这些问题并不主导分析。在此范围内，未声称明确探测到宇宙学非高斯性，或与温度中所见异常相对应的异常。值得注意的是，以温度热斑和冷斑位置为中心的 CMB 偏振信号堆叠，与 CDM 宇宙学模型表现出极好的一致性，并且清晰表明了 Planck 如何在度尺度上提供最先进的 CMB 温度和偏振测量。
引用
@article{arxiv.1906.02552,
title = {Planck 2018 results. VII. Isotropy and Statistics of the CMB},
author = {Planck Collaboration and Y. Akrami and M. Ashdown and J. Aumont and C. Baccigalupi and M. Ballardini and A. J. Banday and R. B. Barreiro and N. Bartolo and S. Basak and K. Benabed and M. Bersanelli and P. Bielewicz and J. J. Bock and J. R. Bond and J. Borrill and F. R. Bouchet and F. Boulanger and M. Bucher and C. Burigana and R. C. Butler and E. Calabrese and J. -F. Cardoso and B. Casaponsa and H. C. Chiang and L. P. L. Colombo and C. Combet and D. Contreras and B. P. Crill and P. de Bernardis and G. de Zotti and J. Delabrouille and J. -M. Delouis and E. Di Valentino and J. M. Diego and O. Doré and M. Douspis and A. Ducout and X. Dupac and G. Efstathiou and F. Elsner and T. A. Enßlin and H. K. Eriksen and Y. Fantaye and R. Fernandez-Cobos and F. Finelli and M. Frailis and A. A. Fraisse and E. Franceschi and A. Frolov and S. Galeotta and S. Galli and K. Ganga and R. T. Génova-Santos and M. Gerbino and T. Ghosh and J. González-Nuevo and K. M. Górski and A. Gruppuso and J. E. Gudmundsson and J. Hamann and W. Handley and F. K. Hansen and D. Herranz and E. Hivon and Z. Huang and A. H. Jaffe and W. C. Jones and E. Keihänen and R. Keskitalo and K. Kiiveri and J. Kim and N. Krachmalnicoff and M. Kunz and H. Kurki-Suonio and G. Lagache and J. -M. Lamarre and A. Lasenby and M. Lattanzi and C. R. Lawrence and M. Le Jeune and F. Levrier and M. Liguori and P. B. Lilje and V. Lindholm and M. López-Caniego and Y. -Z. Ma and J. F. Macías-Pérez and G. Maggio and D. Maino and N. Mandolesi and A. Mangilli and A. Marcos-Caballero and M. Maris and P. G. Martin and E. Martínez-González and S. Matarrese and N. Mauri and J. D. McEwen and P. R. Meinhold and A. Mennella and M. Migliaccio and M. -A. Miville-Deschênes and D. Molinari and A. Moneti and L. Montier and G. Morgante and A. Moss and P. Natoli and L. Pagano and D. Paoletti and B. Partridge and F. Perrotta and V. Pettorino and F. Piacentini and G. Polenta and J. -L. Puget and J. P. Rachen and M. Reinecke and M. Remazeilles and A. Renzi and G. Rocha and C. Rosset and G. Roudier and J. A. Rubiño-Martín and B. Ruiz-Granados and L. Salvati and M. Savelainen and D. Scott and E. P. S. Shellard and C. Sirignano and R. Sunyaev and A. -S. Suur-Uski and J. A. Tauber and D. Tavagnacco and M. Tenti and L. Toffolatti and M. Tomasi and T. Trombetti and L. Valenziano and J. Valiviita and B. Van Tent and P. Vielva and F. Villa and N. Vittorio and B. D. Wandelt and I. K. Wehus and A. Zacchei and J. P. Zibin and A. Zonca},
journal= {arXiv preprint arXiv:1906.02552},
year = {2020}
}
备注
Paper VII of the Planck 2018 release, revised to closely match version published in Astronomy and Astrophysics