Lyman alpha forest different for different objects?

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SUMMARY

The distribution of Lyman alpha absorbers in quasar spectra varies with redshift, following a power law, but the constants involved differ across various celestial objects. This indicates that the redshift distribution of absorption systems is not uniform, contradicting the expectation that all objects would exhibit similar distributions of absorbers. Recent studies suggest that environmental factors and the evolution of the universe contribute to these variations. For further understanding, recent literature beyond 2001 should be consulted.

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  • Understanding of Lyman alpha absorption and its significance in astrophysics
  • Familiarity with quasar spectra analysis
  • Knowledge of redshift and its implications in cosmology
  • Basic grasp of power law distributions in scientific data
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  • Research recent papers on Lyman alpha absorbers published after 2001
  • Explore the impact of cosmic evolution on absorption line distributions
  • Investigate the role of environmental factors in the variation of absorbers
  • Learn about advanced techniques in quasar spectrum analysis
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Astronomers, astrophysicists, and researchers studying cosmic evolution and quasar spectra will benefit from this discussion.

Jonathan Scott
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I was wondering how the distribution of Lyman alpha absorbers (as seen in the "forest" of absorption lines of a quasar spectrum) varies with red-shift (corresponding to evolution with the age of the universe). I've found various sources which mention in passing that the frequency of absorbers in a given spectrum vary with redshift according to a power law, which sounds interesting.

But it seems that the constants involved and hence the redshift distribution of absorption systems varies for different objects. Is that really right, and if so how can that be? I had expected that the average number of clouds between two given redshift values would be about the same in all directions, so all objects should show similar distributions.

Can anyone point me to a recent reference on this? Most of the papers I can find are around 1997-2001.
 
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