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
收藏
页码：667 / 668
页数：2
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