Multi-component decomposition of astronomical spectra by compressed sensing

Mark C. M. Cheung; Bart De Pontieu; Juan MartÍnez-Sykora; Paola Testa; Amy R. Winebarger; Adrian Daw; Viggo Hansteen; Patrick Antolin; Theodore D. Tarbell; Jean-Pierre Wuelser; Peter Young; null the MUSE team

doi:10.3847/1538-4357/ab263d

Multi-component decomposition of astronomical spectra by compressed sensing

Mark C. M. Cheung, Bart De Pontieu, Juan MartÍnez-Sykora, Paola Testa, Amy R. Winebarger, Adrian Daw, Viggo Hansteen, Patrick Antolin, Theodore D. Tarbell, Jean-Pierre Wuelser, Peter Young, the MUSE team

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

The 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).

Original language	English
Article number	13
Number of pages	9
Journal	Astrophysical Journal
Volume	882
Issue number	1
Early online date	27 Aug 2019
DOIs	https://doi.org/10.3847/1538-4357/ab263d
Publication status	Published - 1 Sept 2019

Keywords

Instrumentation: spectrographs
Line: profiles
Methods: observational
Sun: corona
Techniques: imaging spectroscopy

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10.3847/1538-4357/ab263dLicence: CC BY

Cheung_2019_ApJ_882_13
Copyright © 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.
Final published version, 2.34 MBLicence: CC BY

http://adsabs.harvard.edu/abs/2019arXiv190203890CLicence: CC BY

The Cool Alter-Ego of the Hot: The Cool Alter-ego of the Hot Solar Corona
Antolin, P. (PI)
1/06/18 → 31/05/23
Project: Fellowship

Cite this

@article{f27d6f05d3a949d3816125c0b248298d,

title = "Multi-component decomposition of astronomical spectra by compressed sensing",

abstract = "The 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).",

keywords = "Instrumentation: spectrographs, Line: profiles, Methods: observational, Sun: corona, Techniques: imaging spectroscopy",

author = "Cheung, {Mark C. M.} and {De Pontieu}, Bart and Juan Mart{\'I}nez-Sykora and Paola Testa and Winebarger, {Amy R.} and Adrian Daw and Viggo Hansteen and Patrick Antolin and Tarbell, {Theodore D.} and Jean-Pierre Wuelser and Peter Young and {the MUSE team}",

note = "Funding: STFC Ernest Rutherford Fellowship (grant agreement No. ST/R004285/1) (PA).",

year = "2019",

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day = "1",

doi = "10.3847/1538-4357/ab263d",

language = "English",

volume = "882",

journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - Multi-component decomposition of astronomical spectra by compressed sensing

AU - Cheung, Mark C. M.

AU - De Pontieu, Bart

AU - MartÍnez-Sykora, Juan

AU - Testa, Paola

AU - Winebarger, Amy R.

AU - Daw, Adrian

AU - Hansteen, Viggo

AU - Antolin, Patrick

AU - Tarbell, Theodore D.

AU - Wuelser, Jean-Pierre

AU - Young, Peter

AU - the MUSE team, null

N1 - Funding: STFC Ernest Rutherford Fellowship (grant agreement No. ST/R004285/1) (PA).

PY - 2019/9/1

Y1 - 2019/9/1

N2 - The 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).

AB - The 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).

KW - Instrumentation: spectrographs

KW - Line: profiles

KW - Methods: observational

KW - Sun: corona

KW - Techniques: imaging spectroscopy

U2 - 10.3847/1538-4357/ab263d

DO - 10.3847/1538-4357/ab263d

M3 - Article

SN - 0004-637X

VL - 882

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 13

ER -

Multi-component decomposition of astronomical spectra by compressed sensing

Abstract

Keywords

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Projects

The Cool Alter-Ego of the Hot: The Cool Alter-ego of the Hot Solar Corona

Cite this