Innermost helical jet structure revealed in blazar

Innermost helical jet structure revealed in blazar | 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Share Download PDF Article Innermost helical jet structure revealed in blazar Hubing Xiao This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7458427/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Relativistic jets are among the most extreme objects in the universe. Observing the inner structure of jets at cosmic distances remains a significant challenge, even with interferometric techniques. In this study, we identify a helical structure along the conical jet within approximately 72.4 light-years of the jet apex, based on the γ-ray escalating periodic oscillation (EPO) signal analysis and the Very Long Baseline Array (VLBA) kinematic observations. The combined observations reveal the first direct evidence of the innermost helical structure in the conical jet of the blazar S5 0716+714, as well as the closest helical structure to the central supermassive black hole observed in blazar-type objects. Physical sciences/Astronomy and planetary science/Astronomy and astrophysics/High-energy astrophysics Physical sciences/Astronomy and planetary science/Astronomy and astrophysics/Time-domain astronomy blazar jet helical magnetic field Full Text Additional Declarations There is NO Competing Interest. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-7458427","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":516657035,"identity":"514d0720-3dfb-436f-8f71-63f8ac2305d8","order_by":0,"name":"Hubing Xiao","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA5UlEQVRIiWNgGAWjYBACAwYehgMgBhsDA+MDIC0DZhKrhdkAyOchSgsMsEkQpcVcIvfg4YJfDIl97IePVXxs+8PDz96WwPCjYhtOLZYz8hIOz+xjMGbjSUu7ObPNgEey59gBxp4zt3E77EaOwWHeHgY5NoYcs9u8QC0GN9IbmBnbCGvhYeN/Y1ZMvBaeH0BbJHLMmCFa0g7g13LmXcJh3gYJYzaJZ8mSM84Zg/yScBCvX47nHv7M88cmcX5/8sEPH8rk5IAhZvjgRwVuLWDA2CaBKnAAv3oQ+ENYySgYBaNgFIxgAAB7r1GSr6LLRAAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0001-8244-1229","institution":"Shanghai Normal University","correspondingAuthor":true,"prefix":"","firstName":"Hubing","middleName":"","lastName":"Xiao","suffix":""}],"badges":[],"createdAt":"2025-08-26 04:00:56","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7458427/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7458427/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":93041546,"identity":"99ecffde-22cb-47b6-b565-49a1d758032a","added_by":"auto","created_at":"2025-10-08 12:20:34","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":549594,"visible":true,"origin":"","legend":"Article File","description":"","filename":"InnermosthelicaljetstructurerevealedinblazarR0.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7458427/v1_covered_a31b5c01-69a8-4cee-b8e4-20232ebe9ef4.pdf"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Innermost helical jet structure revealed in blazar","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":false,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"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":"blazar, jet, helical, magnetic field","lastPublishedDoi":"10.21203/rs.3.rs-7458427/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7458427/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Relativistic jets are among the most extreme objects in the universe. 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