Gravitational lensing angle equation

Click For Summary
SUMMARY

The discussion centers on the gravitational lensing angle equation, specifically the angle of light deflection caused by massive objects like the Sun. A participant references the Wikipedia article on gravitational lensing, highlighting the formula found in the "Explanation in terms of space-time curvature" section. This formula is essential for understanding how light is bent around massive celestial bodies, providing a clear method for calculating the deflection angle.

PREREQUISITES
  • Understanding of gravitational lensing principles
  • Familiarity with general relativity concepts
  • Basic knowledge of light propagation in space
  • Ability to interpret scientific diagrams
NEXT STEPS
  • Study the gravitational lensing angle equation in detail
  • Explore the implications of space-time curvature on light paths
  • Review advanced topics in general relativity
  • Investigate real-world applications of gravitational lensing in astronomy
USEFUL FOR

Astronomers, physicists, and students of general relativity who are interested in the effects of massive objects on light propagation and gravitational lensing phenomena.

scupydog
Messages
101
Reaction score
0
Hello.

In the attached a diagram there are 2 stars on the left, the upper star is the apparent position as veiwed from Earth and the lower star the true position. The central star is the Sun

Could anyone give or direct me to an equation for the angle by which the light is deflected aº in the attached diagram.
 

Attachments

Astronomy news on Phys.org
scupydog said:
Hello.

In the attached a diagram there are 2 stars on the left, the upper star is the apparent position as veiwed from Earth and the lower star the true position. The central star is the Sun

Could anyone give or direct me to an equation for the angle by which the light is deflected aº in the attached diagram.

See the Wikipedia article on "http://en.wikipedia.org/wiki/Gravitational_lensing" ". The relevant formula appears in the section "Explanation in terms of space-time curvature".
 
Last edited by a moderator:
Thx for your reply Johnathan, i never thought to look on there. lots of interesting stuff.
 

Similar threads

High School Are some objects in the night sky just older images of other objects?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Gravitational lensing: deriving magnification of lensed image
  • · Replies 2 ·
Replies
2
Views
2K
High School Beware of "truthiness" in astronomy in seemingly reliable websites
  • · Replies 21 ·
Replies
21
Views
3K
Undergrad Nuclear reactions in the Sun and other topics on stars
  • · Replies 49 ·
2
Replies
49
Views
5K
Undergrad Star Gravitational Binding Energy Questions
  • · Replies 8 ·
Replies
8
Views
7K
Undergrad Two recent tests of loop quantum gravity theory
  • · Replies 15 ·
Replies
15
Views
6K
High School Gravitatonal field force arrow diagram for Sun and Earth
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad New Hubble Paper On Lensing In Galactic Clusters
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Could gamma-ray bursts have an intragalactic origin?
  • · Replies 29 ·
Replies
29
Views
1K
Graduate Gravitational Lensing Q: Angle Deflection Sun/Earth?
  • · Replies 4 ·
Replies
4
Views
2K