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arXiv 2609.28257astro-ph.COastro-ph.GA

JWST 证据表明在 z = 15 处存在尖锐的“宇宙破晓”

JWST evidence for a sharp "Cosmic Daybreak" at z = 15

Jiashuo Zhang, Tom Broadhurst, Tzihong Chiueh, Hsi-Yu Schive, Keiichi Umetsu, Jose M. Diego, Paloma Morilla, Alvaro Pozo, Chian-Chou Chen, Jeremy Lim, Pablo G. … 展开作者

Jiashuo Zhang, Tom Broadhurst, Tzihong Chiueh, Hsi-Yu Schive, Keiichi Umetsu, Jose M. Diego, Paloma Morilla, Alvaro Pozo, Chian-Chou Chen, Jeremy Lim, Pablo G. Perez-Gonzalez, Rogier Windhorst

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中文总结 AI 辅助

JWST 观测发现高红移星系在 z=15 处恒星年龄突变为零,支持波暗物质模型,挑战标准宇宙学,预示“宇宙破晓”的尖锐转变。

中文摘要 AI 辅助

JWST 相对容易地发现了发光的年轻星系,其红移延伸至 z=14.5,因此令人困惑的是,对更暗候选天体的更深光谱观测现在只发现了闯入者。这种红移“僵局”通过测量这些高红移星系的恒星年龄而得到强调,我们显示这些年龄在 z=15 处收敛为零,并且明显缺乏更早的恒星形成。从字面上看,这种从黑暗时代到发光星系的晚期转变不同于标准 LCDM 中渐进的宇宙黎明,但确实证实了波暗物质($ψ$DM)作为玻色-爱因斯坦凝聚体的一个关键预测。德布罗意波压力抵抗引力,直到在 z=15 处克服 $4\times 10^9M_\odot$ 的显著金斯质量,这对应于轻玻色子 $m_ψ=2.2_{-0.3}^{+0.4} \times 10^{-22}$eV,并且与来自透镜异常和矮星系的独立估计相似。此外,最高红移星系的显著光度似乎收敛于 $ψ$DM 的初始金斯尺度,而 LCDM 预测延伸到比观测更低的亮度和更大的年龄。随着 JWST 观测的积累,这些对比鲜明的预测可以得到明确检验,对超出标准模型的暗物质重粒子或受弦轴子景观启发的超轻玻色子具有截然不同的意义。

英文摘要

Luminous young galaxies have been uncovered with relative ease by JWST, extending to z=14.5, so it is puzzling that deeper spectroscopy of fainter candidates now finds only interlopers. This redshift `ìmpasse" is underscored by the measured stellar ages of these high-z galaxies, which we show converge to zero by z=15, with a marked absence of earlier star-formation. Taken literally, such a late transition from the Dark Ages to luminous galaxies is unlike the gradual Cosmic Dawn of standard LCDM, but does confirm a key prediction of Wave Dark Matter, $ψ$DM, as a Bose-Einstein condensate. The de Broglie wave pressure resists gravity until a substantial Jeans mass of $4\times 10^9M_\odot$ is overcome at z$=$15, corresponding to a light boson $m_ψ=2.2_{-0.3}^{+0.4} \times 10^{-22}$eV, and similar to independent estimates from lensing anomalies and dwarf galaxies. Furthermore, the substantial luminosities of the highest redshift galaxies appear to converge to the initial Jeans scale of $ψ$DM, whereas LCDM predictions extend to lower luminosities and larger ages than observed. These contrasting predictions can be definitively tested as JWST observations accumulate, with diametric implications for Dark Matter as heavy particles beyond the Standard Model or ultra-light bosons motivated by the String Axiverse.

发表机构

  • Donostia International Physics Center, DIPC(多诺西亚国际物理中心)
  • Ikerbasque, Basque Foundation for Science(伊克尔巴斯基,巴斯克科学基金会)
  • Department of Theoretical Physics, University of the Basque Country UPV/EHU(巴斯克自治大学理论物理系)
  • Department of Physics, National Taiwan University(台湾大学物理系)
  • National Center for Theoretical Sciences, National Taiwan University(台湾大学国家理论科学中心)
  • Academia Sinica Institute of Astronomy and Astrophysics (ASIAA)(中央研究院天文及天文物理研究所)
  • Department of Physics, The University of Hong Kong(香港大学物理系)
  • The Hong Kong Institute for Astronomy and Astrophysics, The University of Hong Kong(香港大学香港天文及天文物理研究所)
  • Instituto de Física de Cantabria (CSIC-UC)(坎塔布里亚物理研究所)
  • Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心)
  • School of Earth and Space Exploration, Arizona State University(亚利桑那州立大学地球与太空探索学院)

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