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 R. Young

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 R. Young

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

19 Citations (Scopus)

26 Downloads (Pure)

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
Journal	The 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
Externally published	Yes

Access to Document

10.3847/1538-4357/ab263dLicence: CC BY

Cheung_2019_ApJ_882_13Final published version, 2.34 MBLicence: CC BY

Cite this

@article{3c2bd4e0b25c4bad9b4961f1fc0d9d79,

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).",

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 Young, {Peter R.}",

year = "2019",

month = sep,

day = "1",

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

language = "English",

volume = "882",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "Institute of Physics",

number = "1",

}

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 R.

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).

U2 - 10.3847/1538-4357/ab263d

DO - 10.3847/1538-4357/ab263d

M3 - Article

SN - 0004-637X

VL - 882

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

M1 - 13

ER -

Multi-component Decomposition of Astronomical Spectra by Compressed Sensing

Abstract

Access to Document

Fingerprint

Cite this