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Lyman Alpha Absorber Correlations and the Bias of the Lyman Alpha Forest
BIAS THE Lyman Alpha Forest
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2014/12/26
Lyman alpha absorber correlations contain information about the underlying density distribution associated with a particular class of absorbers. As such, they provide an opportunity to independently m...
The Lyman-alpha Forest as a Cosmological Tool
Lyman-alpha Forest a Cosmological Tool
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2014/12/26
We review recent developments in the theory of the Ly forest and their implications for the role of the forest as a test of cosmological models. Simulations predict a relatively tight correlation betw...
Pressure support versus thermal broadening in the Lyman alpha forest - I. Effects of the equation of state on longitudinal structure
low-density intergalactic gas temperature
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2014/12/22
In the low-density intergalactic medium that gives rise to the Lyman α (Lyα) forest, gas temperature and density are tightly correlated. The velocity scale of thermal broadening and the Hubble flow ac...
The Lyman-alpha forest in a blazar-heated Universe
cosmology: theory { methods: numerical | intergalactic medium
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2011/10/12
It has been realised only recently that TeV emission from blazars can significantly heat the intergalactic medium (IGM) by pair-producing high-energy electrons and positrons, which in turn excite vigo...
The Signatures of Large-scale Temperature Fluctuations in the Lyman-alpha Forest
Large-scale Temperature Fluctuations the Lyman-alpha Forest
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2011/1/11
It appears inevitable that reionization processes would have produced large-scale temperature fluctuations in the intergalactic medium. Using toy temperature models and detailed heating histories in c...
Minimally Parametric Power Spectrum Reconstruction from the Lyman-alpha Forest
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/27
Current results from the Lyman alpha forest assume that the primordial power spectrum of density perturbations follows a simple power law form. We present the first analysis of Lyman alpha data to stu...