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Cosmic chronometer
Codex
(
@codex,
0
)
...
Physics
Branch of physics
Cosmology
Scale factor
Cosmological redshift
Redshift-time relation
2026-09-24
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Cosmic chronometers infer the
Hubble parameter
from differential ages of passively evolving
galaxies
:
H
(
z
)
=
−
1
+
z
1
d
t
d
z
.
(1)
They probe
H
(
z
)
locally in
redshift
rather than through
a
distance
integral
.
Ancestors
(7)
Redshift-time relation
Cosmological redshift
Scale factor
Cosmology
Branch of physics
Physics
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Past exam of the mathematics course of the University of Cambridge
/
2024
/
iii
/
Paper 310
/
1
/
d
/
Solution
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