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courses:ast403:absorption-systems [2026/03/23 22:13] – [The Lyman-$\alpha$ Forest] shuvocourses:ast403:absorption-systems [2026/03/26 07:03] (current) – [Infographics on Absorption Systems] shuvo
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 **Cosmological Significance:** These clouds are the most common type of absorption system and represent a significant reservoir of the Universe's baryons. They also show traces of "missing metals"—pollutants from early star formation found even far from galaxies. **Cosmological Significance:** These clouds are the most common type of absorption system and represent a significant reservoir of the Universe's baryons. They also show traces of "missing metals"—pollutants from early star formation found even far from galaxies.
  
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 +[{{ :courses:ast403:lymanforest.png?600 | Fig 2: Lyman-alpha forest.}}]
  
 Here is a video of how this is generated: [[https://youtu.be/6Bn7Ka0Tjjw?si=6O0a9UhoEDe6JY4x]] Here is a video of how this is generated: [[https://youtu.be/6Bn7Ka0Tjjw?si=6O0a9UhoEDe6JY4x]]
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-[{{ :courses:ast403:lymanasb.jpeg?600 | Fig 2: Spectrum foa quasar at z=1.34 showing various Lyman absorptions.}}]+[{{ :courses:ast403:lymanasb.jpeg?600 | Fig 3: Spectrum foa quasar at z=1.34 showing various Lyman absorptions.}}]
 ===== Lyman-Limit Systems ===== ===== Lyman-Limit Systems =====
 These systems have column densities of $N(HI) \gtrsim 2 \times 10^{17} \text{ cm}^{-2}$. \\ These systems have column densities of $N(HI) \gtrsim 2 \times 10^{17} \text{ cm}^{-2}$. \\
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-[{{ :courses:ast403:lymanasb.png?600 | Fig 3: Various absorption systems. See [[https://arxiv.org/abs/1510.03368]] for details.}}]+[{{ :courses:ast403:lymanasb.png?600 | Fig 4: Various absorption systems. See [[https://arxiv.org/abs/1510.03368]] for details.}}]
  
 ===== The Gunn-Peterson Trough ===== ===== The Gunn-Peterson Trough =====
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-[{{ :courses:ast403:gpt.jpg?600 | Fig 3: Gunn-Peterson trough.}}]+[{{ :courses:ast403:gp_trough.jpg?600 | Fig 5: Gunn-Peterson trough.}}] 
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 ===== Infographics on Absorption Systems ===== ===== Infographics on Absorption Systems =====
  
-[{{ :courses:ast403:absorption_systems.png?800 | Fig 4: IGM absorption systems explained.}}]+[{{ :courses:ast403:absorption_systems.png?800 | Fig 6: IGM absorption systems explained.}}]
courses/ast403/absorption-systems.1774325631.txt.gz · Last modified: by shuvo
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