Local Cosmic Ray Anisotropy Induced by Interplanetary Magnetic Flux Ropes

Local Cosmic Ray Anisotropy Induced by Interplanetary Magnetic Flux Ropes | 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 Research Article Local Cosmic Ray Anisotropy Induced by Interplanetary Magnetic Flux Ropes Arun Babu Kollamparambil Paul, Alejandro Lara, Madhu Salavurao, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7883906/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 In this investigation, we present a comprehensive analysis of local cosmic-ray anisotropies induced by interplanetary magnetic flux ropes (MFRs). Utilising observational data, theoretical frameworks, and simulation analyses, we explore the modulation of galactic cosmic rays (GCRs) in relation to the MFR characteristics. The well-structured MFR magnetic field can act like a Lorentz accelerator channelling GCRs along its axial direction. Our study identifies 96 significant MFR events over nearly three decades, revealing a strong correlation between the peak magnetic field intensity and enhancements in GCR flux. Simulations demonstrate that both the strength of the magnetic field and the size of the MFR are crucial for guiding high-energy particles along the MFR axis. These findings challenge the conventional understanding of coronal mass ejections (CMEs) as barriers to cosmic rays, suggesting that MFRs can also serve as channels for GCRs, leading to localized anisotropies in cosmic-ray intensity. The implications of this research extend to astronaut safety and the modeling of cosmic ray behavior in space weather studies. Flares Dynamics Helicity Magnetic Magnetic fields Corona Full Text Additional Declarations No competing interests reported. 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-7883906","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":533075140,"identity":"2d3136e6-6e5e-40f7-8f38-cfa632980f3c","order_by":0,"name":"Arun Babu Kollamparambil 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