2004/11/23 | 相对论红移[Relativistic Redshift]
类别(Ω〖物理〗) | 评论(0) | 阅读(31) | 发表于 13:23
The relativistic redshift for a particle is given by

(1)

where is the rest wavelength. From the relativistic Doppler shift
(2)

So, for


(3)

Since, to first-order approximation
(4)

using
(5)

gives
(6)

(7)

(8)

The time derivative of z is
(9)

where a is the expansion parameter and H is Hubble constant. In the Einstein-de Sitter cosmological model, the derivative is
(10)

(11)

(12)

In terms of the expansion parameter,
(13)

(14)

(15)

But
(16)

so
(17)
0

评论Comments

日志分类
首页[1408]
∑〖数学〗[349]
Ω〖物理〗[357]
¤〖天文〗[343]
℃〖化学〗[359]