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学術論文

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

MPS-Authors

Bañados,  Eduardo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Venemans,  Bram P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mazzucchelli,  Chiara
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Farina,  Emanuele P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Walter,  Fabian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang,  Feige
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Decarli,  Roberto
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stern,  Daniel
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fan,  Xiaohui
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Davies,  Frederick B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hennawi,  Joseph F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Simcoe,  Robert A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Turner,  Monica L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rix,  Hans-Walter
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yang,  Jinyi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kelson,  Daniel D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rudie,  Gwen C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Winters,  Jan Martin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018Natur.553..473B
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引用

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. (2018). An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5. Nature, 553, 473-476.


引用: https://hdl.handle.net/21.11116/0000-0005-CF16-A
要旨
Quasars are the most luminous non-transient objects known and as a result they enable studies of the Universe at the earliest cosmic epochs. Despite extensive efforts, however, the quasar ULAS J1120 + 0641 at redshift z = 7.09 has remained the only one known at z > 7 for more than half a decade. Here we report observations of the quasar ULAS J134208.10 + 092838.61 (hereafter J1342 + 0928) at redshift z = 7.54. This quasar has a bolometric luminosity of 4 × 1013 times the luminosity of the Sun and a black-hole mass of 8 × 108 solar masses. The existence of this supermassive black hole when the Universe was only 690 million years old—just five per cent of its current age—reinforces models of early black-hole growth that allow black holes with initial masses of more than about 104 solar masses or episodic hyper-Eddington accretion. We see strong evidence of absorption of the spectrum of the quasar redwards of the Lyman α emission line (the Gunn-Peterson damping wing), as would be expected if a significant amount (more than 10 per cent) of the hydrogen in the intergalactic medium surrounding J1342 + 0928 is neutral. We derive such a significant fraction of neutral hydrogen, although the exact fraction depends on the modelling. However, even in our most conservative analysis we find a fraction of more than 0.33 (0.11) at 68 per cent (95 per cent) probability, indicating that we are probing well within the reionization epoch of the Universe.