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dc.contributor.authorCheung, Mark C. M.
dc.contributor.authorDe Pontieu, Bart
dc.contributor.authorMartÍnez-Sykora, Juan
dc.contributor.authorTesta, Paola
dc.contributor.authorWinebarger, Amy R.
dc.contributor.authorDaw, Adrian
dc.contributor.authorHansteen, Viggo
dc.contributor.authorAntolin, Patrick
dc.contributor.authorTarbell, Theodore D.
dc.contributor.authorWuelser, Jean-Pierre
dc.contributor.authorYoung, Peter
dc.contributor.authorthe MUSE team
dc.identifier.citationCheung , M C M , De Pontieu , B , MartÍnez-Sykora , J , Testa , P , Winebarger , A R , Daw , A , Hansteen , V , Antolin , P , Tarbell , T D , Wuelser , J-P , Young , P & the MUSE team 2019 , ' Multi-component decomposition of astronomical spectra by compressed sensing ' , Astrophysical Journal , vol. 882 , no. 1 , 13 .
dc.identifier.otherPURE: 259229065
dc.identifier.otherPURE UUID: f27d6f05-d3a9-49d3-8161-25c0b248298d
dc.identifier.otherBibCode: 2019arXiv190203890C
dc.identifier.otherScopus: 85072337353
dc.identifier.otherWOS: 000483047000002
dc.descriptionFunding: STFC Ernest Rutherford Fellowship (grant agreement No. ST/R004285/1) (PA).en
dc.description.abstractThe signal measured by an astronomical spectrometer may be due to radiation from a multi-component mixture of plasmas with a range of physical properties (e.g., temperature, Doppler velocity). Confusion between multiple components may be exacerbated if the spectrometer sensor is illuminated by overlapping spectra dispersed from different slits, with each slit being exposed to radiation from a different portion of an extended astrophysical object. We use a compressed sensing method to robustly retrieve the different components. This method can be adopted for a variety of spectrometer configurations, including single-slit, multi-slit (e.g., the proposed MUlti-slit Solar Explorer mission), and slot spectrometers (which produce overlappograms).
dc.relation.ispartofAstrophysical Journalen
dc.rightsCopyright © 2019. The American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en
dc.subjectInstrumentation: spectrographsen
dc.subjectLine: profilesen
dc.subjectMethods: observationalen
dc.subjectSun: coronaen
dc.subjectTechniques: imaging spectroscopyen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleMulti-component decomposition of astronomical spectra by compressed sensingen
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.description.statusPeer revieweden

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