Horizon Scale tests of Quantum Gravity using the Event Horizon Telescope observations

Horizon Scale tests of Quantum Gravity using the Event Horizon Telescope observations | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Horizon Scale tests of Quantum Gravity using the Event Horizon Telescope observations Stuart Marongwe This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-1800600/v3 This work is licensed under a CC BY 4.0 License Status: Posted Version 3 posted You are reading this latest preprint version Show more versions Abstract We test the fundamental physics of the Nexus Paradigm of quantum gravity using horizon scale images and shadows of the supermassive black holes (SMBHs) Sagittarius (Sgr)A* and M87* as imaged by the Event Horizon Telescope (EHT). We consider the angular diameter of the emission ring peak as predicted by the Nexus Paradigm including the size of the central dark depression and the base diameter of each black hole. The predicted dimensions are then compared to observations from which we obtain an excellent agreement between observations and prediction at the 99th percentile credibility interval. Quantum Gravity Astrophysical Black holes Quantum Cosmology Full Text Additional Declarations There is NO Competing Interest. Cite Share Download PDF Status: Posted Version 3 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-1800600","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":120554313,"identity":"493fd741-b5c1-4ee1-9fcd-52f8eb295c5b","order_by":0,"name":"Stuart Marongwe","email":"data:image/png;base64,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","orcid":"https://orcid.org/0000-0002-1533-7023","institution":"Botswana International University of Science and Technology","correspondingAuthor":true,"prefix":"","firstName":"Stuart","middleName":"","lastName":"Marongwe","suffix":""}],"badges":[],"createdAt":"2022-06-27 16:07:28","currentVersionCode":3,"declarations":"","doi":"10.21203/rs.3.rs-1800600/v3","doiUrl":"https://doi.org/10.21203/rs.3.rs-1800600/v3","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":24600674,"identity":"e1639de2-805c-4d49-b2e8-3f089f496486","added_by":"auto","created_at":"2022-08-01 15:22:57","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":758299,"visible":true,"origin":"","legend":"","description":"","filename":"HorizonscaletestsofQuantumGravityusingtheEHTobservationsv2.pdf","url":"https://assets-eu.researchsquare.com/files/rs-1800600/v3_covered.pdf"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Horizon Scale tests of Quantum Gravity using the Event Horizon Telescope observations","fulltext":[{"header":"Full Text","content":"This preprint is available for \u003ca href='/article/rs-1800600/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e."}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Quantum Gravity, Astrophysical Black holes, Quantum Cosmology","lastPublishedDoi":"10.21203/rs.3.rs-1800600/v3","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-1800600/v3","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"We test the fundamental physics of the Nexus Paradigm of quantum gravity \r\nusing horizon scale images and shadows of the supermassive black holes \r\n(SMBHs) Sagittarius (Sgr)A* and M87* as imaged by the Event Horizon Telescope \r\n(EHT). 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