- #1
jstrunk
- 55
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I am trying to understand the formula's for Gravitational Radiation. At one point in the derivation, every source I have
seen comes up with Kirchhoff's Formula but they never derive it. They always just say its a well known result from
Electromagnetic Radiation. I have been able to determine that they use a Green's function to solve the PDQ. I have
a basic knowledge of Green's functions but I can't quite get the solution in the book because the book isn't very
clear about the physical situation that is being modeled and you need that to come up with the Green's function.
Anyway, can someone recommend free or inexpensive source that carefully derives this formula?
Thanks.
Incidentally, I spent several hours trying to get Kirchhoff's Formula to format in the Preview and had to give up. The Latex was produced by MathType. Maybe it will format when I actually post it.
[itex]h'_{jk,ii} = - 2\kappa T_{jk}[/itex]
Kirchhoff's Formula:
[itex]
h'_{jk} \left( x_0 ,t_0 \right) = \frac{\kappa }{2\pi} \int_V \frac{1}{r} T_{jk} \left( x, t_0 - \frac{r}{c} \right) dV
[/itex]
[Moderator's note: edited the formula so it formats. However, it still may not be quite right; jstrunk, you may want to edit further.]
seen comes up with Kirchhoff's Formula but they never derive it. They always just say its a well known result from
Electromagnetic Radiation. I have been able to determine that they use a Green's function to solve the PDQ. I have
a basic knowledge of Green's functions but I can't quite get the solution in the book because the book isn't very
clear about the physical situation that is being modeled and you need that to come up with the Green's function.
Anyway, can someone recommend free or inexpensive source that carefully derives this formula?
Thanks.
Incidentally, I spent several hours trying to get Kirchhoff's Formula to format in the Preview and had to give up. The Latex was produced by MathType. Maybe it will format when I actually post it.
[itex]h'_{jk,ii} = - 2\kappa T_{jk}[/itex]
Kirchhoff's Formula:
[itex]
h'_{jk} \left( x_0 ,t_0 \right) = \frac{\kappa }{2\pi} \int_V \frac{1}{r} T_{jk} \left( x, t_0 - \frac{r}{c} \right) dV
[/itex]
[Moderator's note: edited the formula so it formats. However, it still may not be quite right; jstrunk, you may want to edit further.]
Last edited by a moderator: