标题： 普朗克PR4数据对原初非高斯性的约束 显示英文标题

标题： Constraints on primordial non-Gaussianity from Planck PR4 data

摘要： 我们对最终的普朗克释放温度和E极化CMB数据进行了首次三谱分析，称为PR4。 我们使用了也用于之前普朗克释放的分箱三谱估计器流程以及积分三谱估计器。 我们测试了标准的原初（局部、等边和正交）和次级（引力透镜、未聚集的点源和星系红外背景）三谱形状。 完整T+E分析的最终原初结果为$f_\mathrm{NL}^\mathrm{local} = -0.1 \pm 5.0$，$f_\mathrm{NL}^\mathrm{equil} = 6 \pm 46$和$f_\mathrm{NL}^\mathrm{ortho} = -8 \pm 21$。 这些结果与之前的普朗克释放一致，但比PR3的误差范围略小，正交情况下的误差范围最多减小了$12\%$。 它们代表了普朗克对原初非高斯性的最佳限制。 引力透镜和点源三谱也得到了检测，与PR3一致。 我们进行了多个验证测试，特别是发现用于确定线性校正项和误差范围的600个模拟具有系统性较低的引力透镜三谱。 然而我们表明这不会影响我们的结果。 显示英文摘要

摘要： We perform the first bispectrum analysis of the final Planck release temperature and E-polarization CMB data, called PR4. We use the binned bispectrum estimator pipeline that was also used for the previous Planck releases as well as the integrated bispectrum estimator. We test the standard primordial (local, equilateral and orthogonal) and secondary (lensing, unclustered point sources and CIB) bispectrum shapes. The final primordial results of the full T+E analysis are $f_\mathrm{NL}^\mathrm{local} = -0.1 \pm 5.0$, $f_\mathrm{NL}^\mathrm{equil} = 6 \pm 46$ and $f_\mathrm{NL}^\mathrm{ortho} = -8 \pm 21$. These results are consistent with previous Planck releases, but have slightly smaller error bars than in PR3, up to $12\%$ smaller for orthogonal. They represent the best Planck constraints on primordial non-Gaussianity. The lensing and point source bispectra are also detected, consistent with PR3. We perform several validation tests and find in particular that the 600 simulations, used to determine the linear correction term and the error bars, have a systematically low lensing bispectrum. We show however that this has no impact on our results.