THE TEMPERATURE-DENSITY RELATION IN THE INTERGALACTIC MEDIUM AT REDSHIFT ⟨z⟩ = 2.4*

@article{Rudie2012THETR,
title={THE TEMPERATURE-DENSITY RELATION IN THE INTERGALACTIC MEDIUM AT REDSHIFT ⟨z⟩ = 2.4*},
author={Gwen C. Rudie and Charles C. Steidel and Max Pettini},
journal={The Astrophysical Journal},
year={2012},
volume={757}
}
• Published 31 August 2012
• Physics
• The Astrophysical Journal
We present new measurements of the temperature-density (T-ρ) relation for neutral hydrogen in the 2.0 < z < 2.8 intergalactic medium (IGM) using a sample of ~6000 individual H I absorbers fitted with Voigt profiles constrained in all cases by multiple Lyman series transitions. We find model-independent evidence for a positive correlation between the column density of H I (N_(HI)) and the minimum observed velocity width of absorbers (b_(min)). With minimal interpretation, this implies that the T…
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