cosmological distance duality relation
C44741
concept
The cosmological distance duality relation is a fundamental relation in cosmology that links luminosity distance and angular diameter distance through the simple formula \(D_L = (1+z)^2 D_A\), assuming photon number conservation and standard spacetime geometry.
All labels observed (1)
| Label | Occurrences |
|---|---|
| cosmological distance duality relation canonical | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: cosmological distance duality relation
Generated description
The cosmological distance duality relation is a fundamental relation in cosmology that links luminosity distance and angular diameter distance through the simple formula \(D_L = (1+z)^2 D_A\), assuming photon number conservation and standard spacetime geometry.
Instances (1)
| Instance | Via concept surface |
|---|---|
| Etherington reciprocity theorem | — |