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Intergalactic medium
(IGM)
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2026-10-13
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The intergalactic medium is the
gas
between
galaxies
. Its diffuse, ionized component contains much of the ordinary
matter
outside
stars
.
Lyman-alpha absorption
measures
its small neutral-
hydrogen
fraction
, while hotter phases require other tracers.
Incoming links
(7)
Past exam of the mathematics course of the University of Cambridge
/
2005
/
iii
/
Paper 74
/
2
/
a
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2005
/
iii
/
Paper 74
/
2
/
b
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2005
/
iii
/
Paper 74
/
2
/
d
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2007
/
iii
/
Paper 67
/
3
/
iv
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2009
/
iii
/
Paper 66
/
3
/
ii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2009
/
iii
/
Paper 66
/
3
/
i
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2009
/
iii
/
Paper 66
/
3
/
v
/
Solution
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