搜索结果: 1-1 共查到“天体物理学 Quasar variability limits”相关记录1条 . 查询时间(0.046 秒)
Quasar variability limits on cosmological density of cosmic strings
Quasar variability limits cosmological density cosmic strings
2010/3/19
We put robust upper limits on the average cosmological density \Omega_s of cosmic strings based on the variability properties of a large homogeneous sample of SDSS quasars. We search for an excess of ...