Measured energy exchange in coronal hole solar wind from its solar origins to the heliosphere

Measured energy exchange in coronal hole solar wind from its solar origins to the heliosphere | 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 Measured energy exchange in coronal hole solar wind from its solar origins to the heliosphere Yeimy Rivera, Alin Paraschiv, Samuel Badman, Alberto Vasquez, and 31 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8929263/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract The 2024 total solar eclipse over North America enabled an unprecedented multi-perspective view of the solar atmosphere through coordinated ground- and space-based observations. Here we use these near-contemporaneous, multi-wavelength datasets to derive the plasma conditions and magnetic environment of an equatorial coronal hole. By connecting remote observations of the nascent solar wind to \emph{in situ} measurements, we trace the energy budget of a single solar wind stream from the subsonic corona across the Alfv'en surface. Our results demonstrate that enthalpy and Alfv'en wave energy fluxes dominate the low-coronal budget, with nearly all energy converted to ion heating and acceleration within the Alfv'en surface. The stream’s evolution is well-described as a thermal-pressure driven wind with additional energy deposited by Alfv'enic fluctuations. The observed evolution of these Alfv'enic fluctuations deviate from a dissipation-free curve throughout, indicating significant and persistent dissipation before reaching the Alfv'en surface. Physical sciences/Astronomy and planetary science/Space physics/Solar physics Physical sciences/Astronomy and planetary science/Space physics Solar wind Alfven waves plasma heating Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryInformation.pdf Supplementary Information Cite Share Download PDF Status: Under Review 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-8929263","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":605027284,"identity":"953475c2-22c5-48e9-9079-565920e88215","order_by":0,"name":"Yeimy 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