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dc.contributor.authorBright, JSen
dc.contributor.authorFender, RPen
dc.contributor.authorMotta, SEen
dc.contributor.authorWilliams, DRAen
dc.contributor.authorMoldon, Jen
dc.contributor.authorPlotkin, RMen
dc.contributor.authorMiller-Jones, JCAen
dc.contributor.authorHeywood, Ien
dc.contributor.authorTremou, Een
dc.contributor.authorBeswick, Ren
dc.contributor.authorSivakoff, GRen
dc.contributor.authorCorbel, Sen
dc.contributor.authorBuckley, DAHen
dc.contributor.authorHoman, Jen
dc.contributor.authorGallo, Een
dc.contributor.authorTetarenko, AJen
dc.contributor.authorRussell, TDen
dc.contributor.authorGreen, Daviden
dc.contributor.authorTitterington, Daviden
dc.contributor.authorWoudt, PAen
dc.contributor.authorArmstrong, RPen
dc.contributor.authorGroot, PJen
dc.contributor.authorHoresh, Aen
dc.contributor.authorHorst, AJVDen
dc.contributor.authorKörding, EGen
dc.contributor.authorMcBride, VAen
dc.contributor.authorRowlinson, Aen
dc.contributor.authorWijers, RAMJen
dc.date.accessioned2020-01-28T00:30:18Z
dc.date.available2020-01-28T00:30:18Z
dc.date.issued2020-07-01en
dc.identifier.issn2397-3366
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/301277
dc.description.abstractBlack holes in binary systems execute patterns of outburst activity where two characteristic X-ray states are associated with different behaviours observed at radio wavelengths. The hard state is associated with radio emission indicative of a continuously replenished, collimated, relativistic jet, whereas the soft state is rarely associated with radio emission, and never continuously, implying the absence of a quasi-steady jet. Here we report radio observations of the black hole transient MAXI J1820+070 during its 2018 outburst. As the black hole transitioned from the hard to soft state we observed an isolated radio flare, which, using high angular resolution radio observations, we connect with the launch of bi-polar relativistic ejecta. This flare occurs as the radio emission of the core jet is suppressed by a factor of over 800. We monitor the evolution of the ejecta over 200 days and to a maximum separation of 10', during which period it remains detectable due to in-situ particle acceleration. Using simultaneous radio observations sensitive to different angular scales we calculate an accurate estimate of energy content of the approaching ejection. This energy estimate is far larger than that derived from state transition radio flare, suggesting a systematic underestimate of jet energetics.
dc.rightsAll rights reserved
dc.titleAn extremely powerful long-lived superluminal ejection from the black hole MAXI J1820+070en
dc.typeArticle
prism.endingPage703
prism.issueIdentifier7en
prism.publicationDate2020en
prism.publicationNameNature Astronomyen
prism.startingPage697
prism.volume4en
dc.identifier.doi10.17863/CAM.48358
dcterms.dateAccepted2020-01-21en
rioxxterms.versionofrecord10.1038/s41550-020-1023-5en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-07-01en
dc.contributor.orcidBright, JS [0000-0002-7735-5796]
dc.contributor.orcidMiller-Jones, JCA [0000-0003-3124-2814]
dc.contributor.orcidSivakoff, GR [0000-0001-6682-916X]
dc.contributor.orcidCorbel, S [0000-0001-5538-5831]
dc.contributor.orcidTetarenko, AJ [0000-0003-3906-4354]
dc.contributor.orcidRussell, TD [0000-0002-7930-2276]
dc.contributor.orcidGreen, David [0000-0003-3189-9998]
dc.contributor.orcidTitterington, David [0000-0003-1431-920X]
dc.contributor.orcidGroot, PJ [0000-0002-4488-726X]
dc.identifier.eissn2397-3366
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEC FP7 ERC SIRG (307215)
cam.orpheus.successTue Mar 31 10:37:55 BST 2020 - Embargo updated*
cam.orpheus.counter2*
rioxxterms.freetoread.startdate2020-07-01


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