Gravitational time dilation

  • #1
309
29

Summary:

Gravitational time dilation at Lagrangian points

Main Question or Discussion Point

In the Lagrangian (L1) point between two hypothetically massive (and close) objects , is gravitational time dilation effect summed or canceled, or something else?
 

Answers and Replies

  • #2
PeroK
Science Advisor
Homework Helper
Insights Author
Gold Member
11,627
4,663
  • #3
pervect
Staff Emeritus
Science Advisor
Insights Author
9,645
893
Summary:: Gravitational time dilation at Lagrangian points

In the Lagrangian (L1) point between two hypothetically massive (and close) objects , is gravitational time dilation effect summed or canceled, or something else?
It's an approximation, but it more or less adds, as Perok says.

The L1 point itself is an approximation in GR (though it's exact in Newtonian theory). The Newtonian analysis doesn't take into account, for example, the gravitational radiation that would make an orbiting body inspiral. Usually this is quite negligible, for instance it's negligible in the solar system. But it's not necessarily negligible for the Hulse-Taylor binary, for another example. If there is no inspiral, one can argue that the solution is stationary, and in that case Perok's source's arguments apply for the weak field case.
 

Related Threads for: Gravitational time dilation

  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
13
Views
2K
  • Last Post
2
Replies
40
Views
4K
  • Last Post
2
Replies
27
Views
2K
Top