论文标题
“宇宙恐龙”的观察表现$ z \ sim20 $
Observational manifestations of "cosmological dinosaurs'' at redshifts $z\sim20$
论文作者
论文摘要
我们考虑一个非常高的质量的原始黑洞，$ 10^9-10^{10} m_ \ odot $，被暗物质包围，RedShifts $ z \ sim20 $包围，而没有任何本地能源释放。早期宇宙中如此沉重和集中的物体以前被称为``宇宙恐龙''。通过辐射转移理论计算了21 cm原子氢线中亮度的光谱分布和空间变化。结果表明，在特定半径处的原始黑洞周围的球形壳的形式出现了狭窄而深的吸收。该壳的参数几乎完全取决于黑洞的质量。讨论了搜索此类对象的硬件和方法论方面。
We consider a primordial black hole of very high mass, $10^9-10^{10}M_\odot$, surrounded by dark matter and barionic halo at redshifts $z\sim20$ without any local sources of energy release. Such heavy and concentrated objects in the early universe were previously called ``cosmological dinosaurs''. Spectral distribution and spatial variation of the brightness in the 21 cm line of atomic hydrogen are calculated with the theory of radiation transfer. It is shown that a narrow and deep absorption arises in the form of the spherical shell around the primordial black hole at the certain radius. The parameters of this shell depend almost exclusively on the mass of the black hole. The hardware and methodological aspects of the search for such objects are discussed.
