{{flagHref}}

Products

Products
Categories
Blog
Podcast
Application
Document

|

/ {{languageFlag}}

Inquiry

a

An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5

Title	An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5
Authors	Eduardo Bañados, Bram P. Venemans, Chiara Mazzucchelli, Emanuele P. Farina, Fabian Walter, Feige Wang, Roberto Decarli, Daniel Stern, Xiaohui Fan, Frederick B. Davies, Joseph F. Hennawi, Robert A. Simcoe, Monica L. Turner, Hans-Walter Rix, Jinyi Yang, Dan
Magazine	Nature
Date	12/06/2017
DOI	10.1038/nature25180
Introduction	Quasars represent the brightest non-transient celestial bodies, providing a unique opportunity to investigate the Universe's earliest cosmic periods. For over five years, ULAS J1120 + 0641 at redshift z = 7.09 was the sole quasar identified beyond z = 7. This study presents observations of the quasar ULAS J134208.10 + 092838.61 (J1342 + 0928) at redshift z = 7.54. This quasar exhibits a bolometric luminosity 4 × 10^13 times that of the Sun and contains a black hole with a mass of 8 × 10^8 solar masses. The presence of this supermassive black hole when the Universe was merely 690 million years old, or five per cent of its current age, supports existing models of rapid early black-hole development, which postulate initial black hole masses exceeding 10^4 solar masses or instances of hyper-Eddington accretion. The quasar's spectrum displays substantial absorption beyond the Lyman α emission line (the Gunn-Peterson damping wing). This observation is consistent with a considerable proportion (over 10 per cent) of neutral hydrogen present in the intergalactic medium around J1342 + 0928. Our analysis indicates a notable fraction of neutral hydrogen, with the precise amount varying based on the modelling approach. Nevertheless, even under stringent analysis, we determine a neutral hydrogen fraction exceeding 0.33 (0.11) at 68 per cent (95 per cent) probability, affirming that these observations penetrate deep into the Universe's reionisation epoch.
Quote	Bañados, E.; Venemans, B. P.; Mazzucchelli, C.; Farina, E. P.; Walter, F.; Wang, F.; Decarli, R.; Stern, D.; Fan, X.; Davies, F. B.; Hennawi, J. F.; Simcoe, R. A.; Turner, M. L.; Rix, H.-W.; Yang, J.; Kelson, D. D.; Rudie, G. C.; Winters, J. M. An 800-mil
Element	Hydrogen (H)
Industry	Space , Research & Laboratory

Related papers

Loading... Please wait...

Publish your research and articles on the SAM website

Disclaimer

This site only provides metadata for academic works to enable users to easily find relevant information. For full access to the works, please use the DOI to visit the original publisher's website. The data comes from publicly accessible scientific databases and complies with the terms of use of these platforms. If you have any concerns regarding copyright, please contact us. We will address them immediately.

Success! You are now subscribed.

You have successfully subscribed! Check your inbox soon to receive great emails from this sender.

Copyright © 1994-2025 Stanford Advanced Materials owned by Oceania International LLC, all rights reserved