A Novel Statistical Method for Measuring the Temperature–Density Relation in the IGM Using the b–NH i Distribution of Absorbers in the Lyα Forest

We present a new method for determining the thermal state of the intergalactic medium based on Voigt profile decomposition of the Lyα forest. The distribution of Doppler parameter and column density (b–N H i distribution) is sensitive to the temperature–density relation T = T 0(ρ/ρ 0) γ−1, and previ...

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Veröffentlicht in:	The Astrophysical journal 2019-05, Vol.876 (1)
Hauptverfasser:	Hiss, Hector, Walther, Michael, Oñorbe, Jose, Hennawi, Joseph F
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorbers Astrophysics Computer simulation Decomposition Density Emulators Forests Intergalactic media Markov chains Monte Carlo simulation Parameter sensitivity Probability density functions Statistical analysis Statistical methods Systematics Temperature Thermal simulation Thermodynamic properties
Online-Zugang:	Volltext
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