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Commission J2 Intergalactic Medium
Scientific Objectives
Commission J2 covers all thematics dealing with the physics of the Intergalactic Medium investigated with all approaches: observational, theoretical and numerical. The main topics can be listed under 4 research items:
1. The structure of the Intergalactic Medium
The Lyalpha forest in hydrogen and helium
3D tomography of the IGM (in absorption and in fluorescent emission)
2. The ultra-violet metagalactic background
Cosmic UV background
Populations of galaxies and Active Galactic Nuclei
3. The interaction of galaxies and Active Galactic Nuclei and the IGM
The Circumgalactic Medium and the extended gaseous environments of galaxies and AGN
Feedback (metal absorption lines, winds and photonionization)
4. The Epoch of Reionization
EoR 21 cm measurements
Nature of the reionization sources
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Volume 2024 n° 7
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