Astronomy - Fine-structure variable?

被引：14

作者：

Songaila, A ^{[1
]}

Cowie, LL ^{[1
]}

机构：

[1] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

来源：

NATURE | 1999年 / 398卷 / 6729期

关键词：

D O I：

10.1038/19426

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Over the entire history of the Universe it is possible that even the known physical constants are not truly constant. The fine-structure constant — which characterizes the strength of the attraction between electrons and photons — is predicted by some theories to vary over time. New data from quasar spectra provide an upper limit on such variation.

引用

页码：667 / 668

页数：2

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