Improving the Spectral Resolution and Wavelength Scale of Solar Flares Using SDO/EVE MEGS-A Level 0B Image Data

Improving the Spectral Resolution and Wavelength Scale of Solar Flares Using SDO/EVE MEGS-A Level 0B Image Data | 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 Improving the Spectral Resolution and Wavelength Scale of Solar Flares Using SDO/EVE MEGS-A Level 0B Image Data Gabriela Gonzalez, Phillip Chamberlin, Vicki Herde This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4202025/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 28 Oct, 2024 Read the published version in Solar Physics → Version 1 posted 7 You are reading this latest preprint version Abstract The EUV Variability Experiment (EVE) is one of three instruments onboard the Solar Dynamics Observatory (SDO). This paper focuses on using the ”A” channel on the Multiple EUV Grating Spectrographs (MEGS-A) on EVE, which measures wavelengths of 5-37nm, to improve the wavelength scale accuracy and spectral resolution during solar flares. In this study, an X2.2 class flare that occurred on 15 February 2011, SOL2011-02-15T0156, was used to derive pixel-to-wavelength scales. EVE’s Level 0B data product is used to create updated wavelength scales that are shown, through this analysis, to make more precise spectral measurements compared to EVE Level 2 data. An X2.2 class flare that occurred on 15 February 2011, SOL2011-02-15T0156, was used to derive the pixel-to-wavelength scales. An improvement range of 5.21% to 11.35% was found in the emission line widths. In the future, these measurements can be used for improved Doppler velocity calculations of the accelerated plasma of various temperatures during solar flares. Flares Spectral Line Broadening Spectrum Ultraviolet Solar Irradiance Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 28 Oct, 2024 Read the published version in Solar Physics → Version 1 posted Editorial decision: Revision requested 09 Jun, 2024 Reviews received at journal 07 Jun, 2024 Reviewers agreed at journal 08 Apr, 2024 Reviewers invited by journal 04 Apr, 2024 Editor assigned by journal 03 Apr, 2024 Submission checks completed at journal 03 Apr, 2024 First submitted to journal 01 Apr, 2024 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. 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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-4202025","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":288458430,"identity":"f0ba8a97-8809-48f0-b749-d7e398ff1e1c","order_by":0,"name":"Gabriela Gonzalez","email":"data:image/png;base64,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","orcid":"","institution":"University of Colorado Boulder","correspondingAuthor":true,"prefix":"","firstName":"Gabriela","middleName":"","lastName":"Gonzalez","suffix":""},{"id":288458431,"identity":"a12756ab-c7a2-4e7f-a031-afef24e06ae0","order_by":1,"name":"Phillip Chamberlin","email":"","orcid":"","institution":"Laboratory for Atmospheric and Space Physics","correspondingAuthor":false,"prefix":"","firstName":"Phillip","middleName":"","lastName":"Chamberlin","suffix":""},{"id":288458432,"identity":"1c790f71-bbc9-45a0-a786-e59a261c6bb9","order_by":2,"name":"Vicki Herde","email":"","orcid":"","institution":"University of Colorado Boulder","correspondingAuthor":false,"prefix":"","firstName":"Vicki","middleName":"","lastName":"Herde","suffix":""}],"badges":[],"createdAt":"2024-04-01 17:14:29","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4202025/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4202025/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s11207-024-02394-9","type":"published","date":"2024-10-28T16:20:27+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":68207304,"identity":"8a6b5ca1-a41a-43ef-bc15-c8c4fe92a8f9","added_by":"auto","created_at":"2024-11-04 16:36:40","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":8523585,"visible":true,"origin":"","legend":"","description":"","filename":"Gonzalezetal.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4202025/v1_covered_38c08f07-6146-4956-9af7-ad057aacaea7.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Improving the Spectral Resolution and Wavelength Scale of Solar Flares Using SDO/EVE MEGS-A Level 0B Image Data","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"solar-physics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"sola","sideBox":"Learn more about [Solar Physics](http://link.springer.com/journal/11207)","snPcode":"11207","submissionUrl":"https://submission.nature.com/new-submission/11207/3","title":"Solar Physics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Flares, Spectral Line, Broadening, Spectrum, Ultraviolet, Solar Irradiance","lastPublishedDoi":"10.21203/rs.3.rs-4202025/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4202025/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"The EUV Variability Experiment (EVE) is one of three instruments onboard the Solar Dynamics Observatory (SDO). 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