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| Verfasst von: | Zhu, Yongda [VerfasserIn]  |
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| | Becker, George D. [VerfasserIn] |
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| | Christenson, Holly M. [VerfasserIn] |
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| | D’Aloisio, Anson [VerfasserIn] |
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| | Bosman, Sarah [VerfasserIn] |
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| | Bakx, Tom [VerfasserIn] |
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| | D’Odorico, Valentina [VerfasserIn] |
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| | Bischetti, Manuela [VerfasserIn] |
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| | Cain, Christopher [VerfasserIn] |
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| | Davies, Frederick B. [VerfasserIn] |
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| | Davies, Rebecca L. [VerfasserIn] |
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| | Eilers, Anna-Christina [VerfasserIn] |
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| | Fan, Xiaohui [VerfasserIn] |
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| | Gaikwad, Prakash [VerfasserIn] |
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| | Haehnelt, Martin G. [VerfasserIn] |
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| | Keating, Laura C. [VerfasserIn] |
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| | Kulkarni, Girish [VerfasserIn] |
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| | Lai, Samuel [VerfasserIn] |
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| | Ma, Hai-Xia [VerfasserIn] |
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| | Mesinger, Andrei [VerfasserIn] |
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| | Qin, Yuxiang [VerfasserIn] |
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| | Satyavolu, Sindhu [VerfasserIn] |
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| | Takeuchi, Tsutomu T. [VerfasserIn] |
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| | Umehata, Hideki [VerfasserIn] |
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| | Yang, Jinyi [VerfasserIn] |
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| Titel: | Probing ultralate reionization |
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| Titelzusatz: | direct measurements of the mean free path over 5 < z < 6 |
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| Verf.angabe: | Yongda Zhu, George D. Becker, Holly M. Christenson, Anson D’Aloisio, Sarah E. I. Bosman, Tom Bakx, Valentina D’Odorico, Manuela Bischetti, Christopher Cain, Frederick B. Davies, Rebecca L. Davies, Anna-Christina Eilers, Xiaohui Fan, Prakash Gaikwad, Martin G. Haehnelt, Laura C. Keating, Girish Kulkarni, Samuel Lai, Hai-Xia Ma, Andrei Mesinger, Yuxiang Qin, Sindhu Satyavolu, Tsutomu T. Takeuchi, Hideki Umehata and Jinyi Yang |
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| E-Jahr: | 2023 |
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| Jahr: | 2023 October 1 |
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| Umfang: | 13 S. |
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| Fussnoten: | Im Titel steht für kleiner das mathematische Zeichen ; Gesehen am 08.04.2024 |
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| Titel Quelle: | Enthalten in: The astrophysical journal / 1 |
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| Ort Quelle: | London : Institute of Physics Publ., 1995 |
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| Jahr Quelle: | 2023 |
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| Band/Heft Quelle: | 955(2023), 2, Artikel-ID 115, Seite 1-13 |
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| ISSN Quelle: | 1538-4357 |
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| Abstract: | The mean free path of ionizing photons, λ mfp, is a critical parameter for modeling the intergalactic medium (IGM) both during and after reionization. We present direct measurements of λ mfp from QSO spectra over the redshift range 5 < z < 6, including the first measurements at z ≃ 5.3 and 5.6. Our sample includes data from the XQR-30 VLT large program, as well as new Keck/ESI observations of QSOs near z ∼ 5.5, for which we also acquire new [C ii] 158 μm redshifts with ALMA. By measuring the Lyman continuum transmission profile in stacked QSO spectra, we find , , , and pMpc at z = 5.08, 5.31, 5.65, and 5.93, respectively. Our results demonstrate that λ mfp increases steadily and rapidly with time over 5 < z < 6. Notably, we find that λ mfp deviates significantly from predictions based on a fully ionized and relaxed IGM as late as z = 5.3. By comparing our results to model predictions and indirect λ mfp constraints based on IGM Lyα opacity, we find that the evolution of λ mfp is consistent with scenarios wherein the IGM is still undergoing reionization and/or retains large fluctuations in the ionizing UV background well below redshift 6. |
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| DOI: | doi:10.3847/1538-4357/aceef4 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.3847/1538-4357/aceef4 |
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| | Volltext: https://dx.doi.org/10.3847/1538-4357/aceef4 |
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| | DOI: https://doi.org/10.3847/1538-4357/aceef4 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1885264445 |
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| Verknüpfungen: | → Zeitschrift |
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Probing ultralate reionization / Zhu, Yongda [VerfasserIn]; 2023 October 1 (Online-Ressource)
