IGM damping wing constraints on the tail end of reionization from the enlarged XQR-30 sample
The attenuation of Lyα photons by neutral hydrogen in the intergalactic medium (IGM) at z ≳ 5 continues to be a powerful probe for studying the epoch of reionization. Given a framework to estimate the intrinsic (true) Lyα emission of high-z sources, one can infer the ionization state of the IGM duri...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
May 2024
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| In: |
Monthly notices of the Royal Astronomical Society
Year: 2024, Jahrgang: 530, Heft: 3, Pages: 3208-3227 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stae1080 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stae1080
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| Verfasserangaben: | B. Greig, A. Mesinger, E. Bañados, G.D. Becker, S.E.I. Bosman, H. Chen, F.B. Davies, V. D’Odorico, A.-C. Eilers, S. Gallerani, M.G. Haehnelt, L. Keating, S. Lai, Y. Qin, E. Ryan-Weber, S. Satyavolu, F. Wang, J. Yang and Y. Zhu |
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| 245 | 1 | 0 | |a IGM damping wing constraints on the tail end of reionization from the enlarged XQR-30 sample |c B. Greig, A. Mesinger, E. Bañados, G.D. Becker, S.E.I. Bosman, H. Chen, F.B. Davies, V. D’Odorico, A.-C. Eilers, S. Gallerani, M.G. Haehnelt, L. Keating, S. Lai, Y. Qin, E. Ryan-Weber, S. Satyavolu, F. Wang, J. Yang and Y. Zhu |
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| 520 | |a The attenuation of Lyα photons by neutral hydrogen in the intergalactic medium (IGM) at z ≳ 5 continues to be a powerful probe for studying the epoch of reionization. Given a framework to estimate the intrinsic (true) Lyα emission of high-z sources, one can infer the ionization state of the IGM during reionization. In this work, we use the enlarged XQR-30 sample of 42 high-resolution and high signal-to-noise quasar spectra between $5.8\lesssim \, z\lesssim \, 6.6$ obtained with VLT/X-shooter to place constraints on the IGM neutral fraction. This is achieved using our existing Bayesian QSO reconstruction framework which accounts for uncertainties such as the: (i) posterior distribution of predicted intrinsic Lyα emission profiles (obtained via covariance matrix reconstruction of the Lyα and N v emission lines from unattenuated high-ionization emission line profiles; C iv, Si iv + O iv], and C iii]) and (ii) distribution of ionized regions within the IGM using synthetic damping wing profiles drawn from a 1.63 Gpc3 reionization simulation. Following careful quality control, we used 23 of the 42 available QSOs to obtain constraints/limits on the IGM neutral fraction during the tail-end of reionization. Our median and 68th percentile constraints on the IGM neutral fraction are: $0.20\substack{+0.14 -0.12}$ and $0.29\substack{+0.14 -0.13}$ at z = 6.15 and 6.35. Further, we also report 68th percentile upper limits of $\bar{x}_{\mathrm{H\, {\small I}}{}} \lt 0.21$, 0.20, 0.21, and 0.18 at z = 5.8, 5.95, 6.05, and 6.55. These results imply reionization is still ongoing at $5.8\lesssim \, z\lesssim \, 6.55$, consistent with previous results from XQR-30 (dark fraction and Lyα forest) along with other observational probes considered in the literature. | ||
| 700 | 1 | |a Mesinger, A |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bañados Torres, Eduardo |e VerfasserIn |0 (DE-588)1073988821 |0 (DE-627)830105220 |0 (DE-576)435497049 |4 aut | |
| 700 | 1 | |a Becker, G D |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bosman, Sarah |e VerfasserIn |0 (DE-588)1297436172 |0 (DE-627)185378124X |4 aut | |
| 700 | 1 | |a Chen, H |e VerfasserIn |4 aut | |
| 700 | 1 | |a Davies, Frederick B. |e VerfasserIn |0 (DE-588)1192316126 |0 (DE-627)1670632318 |4 aut | |
| 700 | 1 | |a D’Odorico, V |e VerfasserIn |4 aut | |
| 700 | 1 | |a Eilers, A -C |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gallerani, S |e VerfasserIn |4 aut | |
| 700 | 1 | |a Haehnelt, M G |e VerfasserIn |4 aut | |
| 700 | 1 | |a Keating, L |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lai, S |e VerfasserIn |4 aut | |
| 700 | 1 | |a Qin, Y |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ryan-Weber, E |e VerfasserIn |4 aut | |
| 700 | 1 | |a Satyavolu, S |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wang, F |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yang, J |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhu, Yongda |e VerfasserIn |0 (DE-588)132527612X |0 (DE-627)1885067356 |4 aut | |
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