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dc.contributor.authorBischetti, M
dc.contributor.authorFeruglio, C
dc.contributor.authorD'Odorico, V
dc.contributor.authorArav, N
dc.contributor.authorBañados, E
dc.contributor.authorBecker, G
dc.contributor.authorBosman, SEI
dc.contributor.authorCarniani, S
dc.contributor.authorCristiani, S
dc.contributor.authorCupani, G
dc.contributor.authorDavies, R
dc.contributor.authorEilers, AC
dc.contributor.authorFarina, EP
dc.contributor.authorFerrara, A
dc.contributor.authorMaiolino, R
dc.contributor.authorMazzucchelli, C
dc.contributor.authorMesinger, A
dc.contributor.authorMeyer, RA
dc.contributor.authorOnoue, M
dc.contributor.authorPiconcelli, E
dc.contributor.authorRyan-Weber, E
dc.contributor.authorSchindler, J-T
dc.contributor.authorWang, F
dc.contributor.authorYang, J
dc.contributor.authorZhu, Y
dc.contributor.authorFiore, F
dc.date.accessioned2022-06-08T23:30:20Z
dc.date.available2022-06-08T23:30:20Z
dc.date.issued2022-05
dc.identifier.issn0028-0836
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/337919
dc.description.abstractBright 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 old1. How these black holes formed in such a short time is the subject of debate, particularly as they lie above the correlation between black-hole mass and galaxy dynamical mass2,3 in the local Universe. What slowed down black-hole growth, leading towards the symbiotic growth observed in the local Universe, and when this process started, has hitherto not been known, although black-hole feedback is a likely driver4. Here we report optical and near-infrared observations of a sample of quasars at redshifts 5.8 ≲ z ≲ 6.6. About half of the quasar spectra reveal broad, blueshifted absorption line troughs, tracing black-hole-driven winds with extreme outflow velocities, up to 17% of the speed of light. The fraction of quasars with such outflow winds at z ≳ 5.8 is ≈2.4 times higher than at z ≈ 2-4. We infer that outflows at z ≳ 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 ≳ 5.8 indeed suggest that these systems are dusty and may be caught during an initial quenching phase of obscured accretion5.
dc.publisherSpringer Science and Business Media LLC
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.subjectastro-ph.GA
dc.subjectastro-ph.GA
dc.titleSuppression of black-hole growth by strong outflows at redshifts 5.8-6.6.
dc.typeArticle
dc.publisher.departmentDepartment of Physics
dc.date.updated2022-05-16T18:29:35Z
prism.publicationNameNature
dc.identifier.doi10.17863/CAM.85325
dcterms.dateAccepted2022-03-03
rioxxterms.versionofrecord10.1038/s41586-022-04608-1
rioxxterms.versionAM
dc.contributor.orcidBischetti, M [0000-0002-4314-021X]
dc.contributor.orcidFeruglio, C [0000-0002-4227-6035]
dc.contributor.orcidD'Odorico, V [0000-0003-3693-3091]
dc.contributor.orcidCupani, G [0000-0002-6830-9093]
dc.contributor.orcidFerrara, A [0000-0002-9400-7312]
dc.contributor.orcidMaiolino, R [0000-0002-4985-3819]
dc.contributor.orcidMazzucchelli, C [0000-0002-5941-5214]
dc.contributor.orcidMeyer, RA [0000-0001-5492-4522]
dc.contributor.orcidPiconcelli, E [0000-0001-9095-2782]
dc.contributor.orcidRyan-Weber, E [0000-0002-5360-8103]
dc.contributor.orcidSchindler, J-T [0000-0002-4544-8242]
dc.contributor.orcidZhu, Y [0000-0003-3307-7525]
dc.identifier.eissn1476-4687
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEuropean Research Council (695671)
pubs.funder-project-idSTFC (ST/V000918/1)
pubs.funder-project-idRoyal Society (RSRP\R1\211056)
cam.issuedOnline2022-05-11
cam.orpheus.success2022-06-08 - Embargo set during processing via Fast-track
cam.depositDate2022-05-16
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2022-11-12


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