The impact of temperature fluctuations on the large-scale clustering of the Ly alpha forest
Bradley Greig, James S Bolton, J Stuart B Wyithe
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2015
We develop a semi-analytic method for assessing the impact of the large-scale IGM temperature fluctuations expected following He II reionization on three-dimensional clustering measurements of the Lyα forest. Our methodology builds upon the existing large volume, mock Lyα forest survey simulations presented by Greig et al. by including a prescription for a spatially inhomogeneous ionizing background, temperature fluctuations induced by patchy He II photoheating and the clustering of quasars. This approach enables us to achieve a dynamic range within our semi-analytic model substantially larger than currently feasible with computationally expensive, fully numerical simulations. The results ag..View full abstract
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Awarded by Science and Technology Facilities Council
We thank Andrew Pontzen, Satya Gontcho A Gontcho and K.G. Lee for providing helpful comments on a draft version of this manuscript. We also thank the anonymous referee for providing helpful suggestions. BG acknowledges the support of the Australian Postgraduate Award. The Centre for All-sky Astrophysics is an Australian Research Council Centre of Excellence, funded by grant CE110001020. JSB acknowledges the support of a Royal Society University Research Fellowship.