我们使用ACT DR 4、SPT-3G 2018、普朗克极化和受限普朗克温度数据(在$\ell<650$)研究了早期暗能量(EDE)的约束,发现EDE优于$Λ$ CDM的$3.3σ$偏好($Δχ^2=-16.2$额外3个自由度)。EDE在红移$z_c=3357\pm200$处贡献了最大分数能量密度$f_{\rm EDE}(z_c)=0.163^{+0.047}_{-0.04}$,并导致CMB推断的哈勃常数$H_0=74.2^{+1.9}_{-2.1}$ km/s/Mpc的值。我们发现,普朗克和ACT DR 4数据提供了$χ^2$的大部分改进,并且包含SPT-3G将$f_{\rm EDE}(z_c)$的后部拉离$Λ$ CDM。这是第一次,一个中等偏好的EDE已报告这三个组合CMB数据集。我们发现,包括测量超新星光度的距离和重子声振荡标准尺的影响最小的偏好($3.0σ$),而测量探测的集群的物质在晚些时候-从普朗克和$f σ_8$从BOSS的透镜势功率谱-减少的意义的偏好2.6 $σ$。相反,在SH 0 ES协作报告的$H_0$值上添加先验会增加对$4-5σ$水平的偏好。在没有这种先验的情况下,在$\ell>1300$中包含普朗克TT数据减少了从$3.0σ$到$2.3σ$的偏好,并且对$f_{\rm EDE}(z_c)$的约束变得与$1σ$中的$Λ$ CDM兼容。我们探讨了普朗克偏振数据中的系统误差是否会影响我们的结论,并发现改变TE偏振效率会显着降低普朗克对EDE的偏好。需要做更多的工作来确定这些仅在CMB数据中的EDE提示是系统误差的唯一结果还是新物理学的开放。
英文摘要:
We investigate constraints on early dark energy (EDE) using ACT DR4, SPT-3G 2018, Planck polarization, and restricted Planck temperature data (at $\ell<650$), finding a $3.3σ$ preference ($Δχ^2=-16.2$ for 3 additional degrees of freedom) for EDE over $Λ$CDM. The EDE contributes a maximum fractional energy density of $f_{\rm EDE}(z_c)=0.163^{+0.047}_{-0.04}$ at a redshift $z_c=3357\pm200$ and leads to a CMB inferred value of the Hubble constant $H_0=74.2^{+1.9}_{-2.1}$ km/s/Mpc. We find that Planck and ACT DR4 data provide the majority of the improvement in $χ^2$, and that the inclusion of SPT-3G pulls the posterior of $f_{\rm EDE}(z_c)$ away from $Λ$CDM. This is the first time that a moderate preference for EDE has been reported for these three combined CMB data sets. We find that including measurements of supernovae luminosity distances and the baryon acoustic oscillation standard ruler only minimally affects the preference ($3.0σ$), while measurements that probe the clustering of matter at late times - the lensing potential power spectrum from Planck and $f σ_8$ from BOSS - decrease the significance of the preference to 2.6$σ$. Conversely, adding a prior on the $H_0$ value as reported by the SH0ES collaboration increases the preference to the $4-5σ$ level. In the absence of this prior, the inclusion of Planck TT data at $\ell>1300$ reduces the preference from $3.0σ$ to $2.3σ$ and the constraint on $f_{\rm EDE}(z_c)$ becomes compatible with $Λ$CDM at $1σ$. We explore whether systematic errors in the Planck polarization data may affect our conclusions and find that changing the TE polarization efficiencies significantly reduces the Planck preference for EDE. More work will be necessary to establish whether these hints for EDE within CMB data alone are the sole results of systematic errors or an opening to new physics.
Using SPTpol, Planck 2015, and non-CMB data to constrain tilted spatially-flat and untilted non-flat $Λ$CDM, XCDM, and $ϕ$CDM dark energy inflation cosmologies
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data
Asia Pacific Center for Theoretical Physics(亚太理论物理中心);Department of Physics, POSTECH(浦项科技大学物理系);INAF/OAS Bologna, Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所/博洛尼亚天文与空间科学观测站);INFN, Sezione di Bologna(意大利国家核物理研究所博洛尼部分部);The Institute of Mathematical Sciences, HBNI(印度数学科学研究所);Homi Bhabha National Institute(霍米·巴巴国立大学);Korea Astronomy and Space Science Institute(韩国天文与空间科学研究院);Korea University of Science and Technology(韩国科学技术院)
Relaxing DESI DR2 BAO Constraints on $\sum m_ν$ with Planck and SPT-3G 2018 in the Context of SPT D1
Institute for Nuclear Research of the Russian Academy of Sciences(俄罗斯科学院核物理研究所);Moscow Institute of Physics and Technology(莫斯科物理技术学院);M.V. Lomonosov Moscow State University(莫斯科国立罗蒙诺索夫大学)
First constraints on causal sources of primordial gravitational waves from BICEP/Keck, SPTpol, SPT-3G, Planck and WMAP $B$-mode data
Fermi National Accelerator Laboratory(费米国家加速器实验室);Kavli Institute for Cosmological Physics, University of Chicago(芝加哥大学卡弗里宇宙物理研究所);Leinweber Institute for Theoretical Physics, Stanford University(斯坦福大学莱因韦伯理论物理研究所);School of Physics, University of Melbourne(墨尔本大学物理学院);Department of Physics and Astronomy, Seoul National University(首尔大学物理与天文学系);Department of Astronomy and Astrophysics, University of Chicago(芝加哥大学天文与天体物理学系);Department of Physics and Astronomy, University of Notre Dame(圣母大学物理与天文学系);Sorbonne Université, CNRS, UMR 7095, Institut d’Astrophysique de Paris(索邦大学,法国国家科学研究中心,UMR 7095,巴黎天体物理研究所)
Exploring $Λ$CDM extensions with SPT-3G and Planck data: 4$σ$ evidence for neutrino masses and implications of extended dark energy models for cosmological tensions
Single-field D-type inflation in the minimal supergravity in light of Planck-ACT-SPT data
Fudan University(复旦大学);Tokyo Metropolitan University(东京都立大学);Tomsk State University(托木斯克国立大学);Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study(宇宙物理与数学研究所(WPI),东京大学高等研究院)
Constraints on Pre-Recombination Early Dark Energy from SPT-3G Public Data
早期的暗能量(EDE)是一种针对哈勃张力的解决方案,其中一个新的宇宙学场在复合之前加速宇宙膨胀,并减小声音视界的物理尺寸。在以前的工作中,在最新的阿塔卡玛宇宙望远镜数据(ACT DR 4)中发现了对非零EDE贡献的轻微偏好,而普朗克卫星遗留数据本身并没有显示出证据。我们发现,在目前的精度水平的SPT-3G,EDE的贡献,宇宙的总能量密度之前的重组$\sim 10\%$不能被排除,但数据也是一致的,没有EDE。ACT DR 4和SPT-3G与普朗克大尺度温度各向异性测量的组合显示了非零EDE的提示($2.6σ$);然而,当包括完整的普朗克2018数据集时,这种偏好消失了。
Comment on: "Third-order corrections to the slow-roll expansion: Calculation and constraints with Planck, ACT, SPT, and BICEP/Keck [2025 PDU 47 101813]"
Institut d’Astrophysique de Paris(巴黎天体物理学研究所);University of Louvain(鲁汶大学)
Weak lensing analysis of SZ-selected clusters of galaxies from the SPT and Planck surveys
我们提出了弱透镜分析的宽视场成像仪SZ星系团(WISCy)的样本,一组12星系团的选择,他们的Sunyaev-Zel'dovich(SZ)效应。在开发新的和改进的方法,从绝对多波段光度学在集群领域的背景选择和确定几何透镜尺度因子,我们比较弱透镜质量估计与公共X射线和SZ数据。我们发现与流体静力学X射线质量的一致性,没有显著的偏差,没有质量依赖的偏差和小于20%的固有散射和约束fgas,500 c =0.128+0.029-0.023。我们独立校准南极望远镜的意义质量关系,并找到与以前的结果一致。弱透镜质量和普朗克康普顿参数的比较,无论是提取自相一致的质量可观测关系(MOR)或使用X射线先验信息的集群大小,显示出显着的差异。对MOR的偏离与星系团的质量和红移密切相关。这可以通过比预期的康普顿减量相对于质量的斜率明显更浅以及先前基于X射线的质量校准中的相应问题来解释,或者通过SZ信号提取中的尺寸或红移依赖性偏差来解释。
Intracluster Medium Fluctuations on Scales up to 1 Mpc: A Combined eROSITA and SPT/Planck Analysis of Abell 3266
California Institute of Technology(加州理工学院);University of Chicago(芝加哥大学);Max-Planck-Institut fur extraterrestrische Physik (MPE)(马克斯·普朗克地外物理研究所);University of Michigan(密歇根大学);NASA Jet Propulsion Laboratory(美国宇航局喷气推进实验室);Sapienza University of Rome(罗马智慧大学);INAF – IRA(意大利国家天体物理研究所-博洛尼亚天文台)
SPT-3G D1: Compton-$y$ maps using data from the SPT-3G and Planck surveys
Stanford University(斯坦福大学);SLAC National Accelerator Laboratory(SLAC国家加速器实验室);California Institute of Technology(加州理工学院);National Center for Supercomputing Applications(国家超级计算应用中心);Fermi National Accelerator Laboratory(费米国家加速器实验室);University of Chicago(芝加哥大学)
High $H_0$ Values from CMB E-mode Data: A Clue for Resolving the Hubble Tension?
由普朗克、ACTPol和SPTPol测量的E模式(EE)CMB功率谱将哈勃常数约束为标准$Λ$ CDM模型(后验均值和中心68%区间界限)内的$70.0\pm2.7$、$72.4^{+3.9}_{-4.8}$和$73.1^{+3.3}_{-3.9}$ km s $^{-1}$ Mpc $^{-1}$。这些值高于普朗克温度(TT)功率谱的限制,并与造父变星超新星距离阶梯测量$H_0=73.2\pm1.3$ km s $^{-1}$ Mpc $^{-1}$一致。如果这种对更高值的偏好在联合分析中得到加强,它可能会为哈勃分歧的解决提供一个有趣的暗示。然而,我们发现,结合普朗克,ACTPol,和SPTPol EE的可能性产生$H_0=68.7\pm1.3$ km s $^{-1}$ Mpc $^{-1}$,$2.4σ$低于距离阶梯测量。这是由于不同的简并方向在整个参数空间,特别是涉及重子密度,$Ω_bh^2$,和标量倾斜,$n_s$,所产生的灵敏度不同的多极范围。我们表明,E-模式$Λ$ CDM约束是一致的,在$1.4σ$内的不同实验,并与普朗克TT结果在$0.8σ$。结合普朗克,ACTPol,和SPTPol EE数据约束的现象学透镜振幅,$A_L=0.89\pm0.10$,与预期值一致的单位。