S
Sarah E. I. Bosman
Researcher at University College London
Publications - 48
Citations - 922
Sarah E. I. Bosman is an academic researcher from University College London. The author has contributed to research in topics: Quasar & Reionization. The author has an hindex of 12, co-authored 27 publications receiving 532 citations. Previous affiliations of Sarah E. I. Bosman include University of Cambridge & Max Planck Society.
Papers
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Journal ArticleDOI
Large Ly α opacity fluctuations and low CMB τ in models of late reionization with large islands of neutral hydrogen extending to z < 5.5
Girish Kulkarni,Girish Kulkarni,Laura C. Keating,Martin G. Haehnelt,Sarah E. I. Bosman,Ewald Puchwein,Ewald Puchwein,Jonathan Chardin,Dominique Aubert +8 more
TL;DR: In this article, the authors present a radiative transfer simulation of cosmic reionization driven by galaxies that reproduces this large scatter and the rapid evolution of the Ly-alpha opacity distribution at 5 ~ 6 Reionization is complete at z=53 in their model, and 50% of the volume of the Universe is ionized at z = 7.
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The role of galaxies and AGN in reionizing the IGM - I. Keck spectroscopy of 5 < z < 7 galaxies in the QSO field J1148+5251
Koki Kakiichi,Richard S. Ellis,Nicolas Laporte,Adi Zitrin,Anna-Christina Eilers,Emma V. Ryan-Weber,Romain A. Meyer,Brant Robertson,Daniel P. Stark,Sarah E. I. Bosman +9 more
TL;DR: In this paper, the authors presented a 3D model for sky astronomy in 3D space using the ASTRO 3D 3D system, which was developed at the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO3D).
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Four direct measurements of the fine-structure constant 13 billion years ago
Michael R. Wilczynska,John K. Webb,Matthew Bainbridge,John D. Barrow,Sarah E. I. Bosman,Robert F. Carswell,Mariusz P. Dąbrowski,Vincent Dumont,Chung-Chi Lee,A. C. O. Leite,Katarzyna Leszczynska,Jochen Liske,Konrad Marosek,Carlos Martins,Dinko Milaković,Dinko Milaković,Paolo Molaro,Luca Pasquini +17 more
TL;DR: These are the most distant direct measurements of a to date and the first measurements using a near-IR spectrograph, and it is found a spatial variation is preferred over a no-variation model at the 3:9σ level.
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New constraints on quasar evolution: broad-line velocity shifts over 1.5 ≲ z ≲ 7.5
TL;DR: In this article, a model-independent investigation of the rest-frame UV spectra from a comprehensive sample of $394$ quasars in the redshift range $1.5\gtrsim z \leq 7.5$ is presented.
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Re-examining the case for neutral gas near the redshift 7 quasar ULAS J1120+0641
TL;DR: Signs of damping wing absorption attenuating the Lyman- emission line of the rst known z 7 quasar, ULAS J1120+0641, recently provided exciting evidence as mentioned in this paper.