Suppression of black-hole growth by strong outflows at redshifts 5.8-6.6
| Autor: | Bischetti, M, Feruglio, C, D'Odorico, V, Arav, N, Bañados, E, Becker, G, Bosman, SEI, Carniani, S, Cristiani, S, Cupani, G, Davies, R, Eilers, AC, Farina, EP, Ferrara, A, Maiolino, R, Mazzucchelli, C, Mesinger, A, Meyer, RA, Onoue, M, Piconcelli, E, Ryan-Weber, E, Schindler, J-T, Wang, F, Yang, J, Zhu, Y, Fiore, F |
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| Přispěvatelé: | Bischetti, M [0000-0002-4314-021X], Feruglio, C [0000-0002-4227-6035], D'Odorico, V [0000-0003-3693-3091], Cupani, G [0000-0002-6830-9093], Ferrara, A [0000-0002-9400-7312], Maiolino, R [0000-0002-4985-3819], Mazzucchelli, C [0000-0002-5941-5214], Meyer, RA [0000-0001-5492-4522], Piconcelli, E [0000-0001-9095-2782], Ryan-Weber, E [0000-0002-5360-8103], Schindler, J-T [0000-0002-4544-8242], Zhu, Y [0000-0003-3307-7525], Apollo - University of Cambridge Repository, Bischetti, M, Feruglio, C, D'Odorico, V, Arav, N, Bañados, E, Becker, G, Bosman, S E I, Carniani, S, Cristiani, S, Cupani, G, Davies, R, Eilers, A C, Farina, E P, Ferrara, A, Maiolino, R, Mazzucchelli, C, Mesinger, A, Meyer, R A, Onoue, M, Piconcelli, E, Ryan-Weber, E, Schindler, J-T, Wang, F, Yang, J, Zhu, Y, Fiore, F, Bischetti, M., Feruglio, C., D’Odorico, V., Arav, N., Bañados, E., Becker, G., Bosman, S. E. I., Carniani, S., Cristiani, S., Cupani, G., Davies, R., Eilers, A. C., Farina, E. P., Ferrara, A., Maiolino, R., Mazzucchelli, C., Mesinger, A., Meyer, R. A., Onoue, M., Piconcelli, E., Ryan-Weber, E., Schindler, J. -T., Wang, F., Yang, J., Zhu, Y., Fiore, F. |
| Rok vydání: | 2022 |
| Předmět: |
Multidisciplinary
supermassive black-holes galaxie Astrophysics::High Energy Astrophysical Phenomena astro-ph.GA quasars galaxies high-redshift galaxies outflows Astrophysics::Cosmology and Extragalactic Astrophysics General Relativity and Quantum Cosmology Settore FIS/05 - Astronomia e Astrofisica Astrophysics::Solar and Stellar Astrophysics quasar Astrophysics::Galaxy Astrophysics high-redshift galaxie supermassive black-hole |
| Zdroj: | Nature, 605(7909), 244-247. NATURE PORTFOLIO |
| Popis: | Bright quasars, powered by accretion onto billion-solar-mass black holes, already existed at the epoch of reionization, when the Universe was 0.5-1 billion years old(1). How these black holes formed in such a short time isthe subject of debate, particularly asthey lie above the correlation between black-hole mass and galaxy dynamical mass(2,3) in the local Universe. What slowed down black-hole growth, leading towards the symbioticgrowth observed in the local Universe, and when this process started, has hitherto not been known, although black-hole feedback is a likely driver(4). Here we report optical and near-infrared observations of a sample of quasars at redshifts 5.8 less than or similar to z less than or similar to 6.6. About half ofthe quasar spectra reveal broad, blueshifted absorption line troughs, tracing black-hole-driven winds with extreme outflowvelocities, up to 17% of the speed of light. The fraction of quasars with such outflow winds at z greater than or similar to 5.8 approximate to 2.4 is times higher than at z approximate to 2-4. We infer that outflows at z greater than or similar to 5.8 inject large amounts of energy into the interstellar medium and suppress nuclear gas accretion, slowing down black-hole growth. The outflow phase may then mark the beginning of substantial black-hole feedback. The red optical colours of outflow quasars at z greater than or similar to 5.8 indeed suggest that these systems are dusty and may be caught during an initial quenching phase of obscured accretion(5). |
| Databáze: | OpenAIRE |
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