Angular Diameter Distance ·
d
A
= d
C
/ (1+z)
un
seel
.com · the distance that turns over near z ≈ 1.6
Redshift
z = 0.0
d
A
0 Mpc
State
—
Fixed-size galaxy
d_A curve
Turnover z ≈ 1.6
Subtended angle θ
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.com · Angular Diameter Distance