J
James S. Bolton
Researcher at University of Nottingham
Publications - 109
Citations - 9737
James S. Bolton is an academic researcher from University of Nottingham. The author has contributed to research in topics: Redshift & Reionization. The author has an hindex of 54, co-authored 102 publications receiving 8759 citations. Previous affiliations of James S. Bolton include University of Cambridge & Max Planck Society.
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Warm dark matter as a solution to the small scale crisis: New constraints from high redshift Lyman-α forest data
TL;DR: In this paper, an analysis of the Lyman-$\ensuremath{\alpha}$ flux power spectrum measured from high-resolution spectra of 25 $zg4$ quasars obtained with the Keck High Resolution Echelle Spectrometer and the Magellan Inamori Kyocera Echeline spectrograph is presented.
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New constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-α forest data
Vid Iršič,Vid Iršič,Vid Iršič,Matteo Viel,Matteo Viel,Martin G. Haehnelt,James S. Bolton,Stefano Cristiani,George D. Becker,Valentina D'Odorico,Guido Cupani,Tae-Sun Kim,T. A. M. Berg,Sebastian Lopez,Sara L. Ellison,Lise Christensen,Kelly D. Denney,Gabor Worseck +17 more
TL;DR: In this paper, the free-streaming of warm dark matter (WDM) from Lyman-α flux-power spectra was studied using hydrodynamical simulations.
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The observed ionization rate of the intergalactic medium and the ionizing emissivity at z≥ 5: evidence for a photon-starved and extended epoch of reionization
TL;DR: In this article, a large set of hydrodynamical simulations, combined with measurements of the Lya opacity of the intergalactic medium (IGM) taken from the literature, were used to obtain robust estimates of the photoionization rate per hydrogen atom at z = 5 and 6.
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First Constraints on Fuzzy Dark Matter from Lyman-α Forest Data and Hydrodynamical Simulations
Vid Iršič,Vid Iršič,Vid Iršič,Matteo Viel,Matteo Viel,Martin G. Haehnelt,James S. Bolton,George D. Becker +7 more
TL;DR: Light boson masses in the range 1-10×10^{-22} eV are ruled out at high significance by the analysis, casting strong doubts that FDM helps solve the "small scale crisis" of the cold dark matter models.
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Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six
TL;DR: In this article, the authors report the discovery of an extremely long (∼110 Mpc/h) and dark (τeff≳7) Lyα trough extending down to z≃5.5 towards the zem≃6.0 quasar ULAS J0148+0600.