X-ray spectra of the Fe-L complex III. Systematic uncertainties
in atomic data

J 2022

X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data

GU, L.; C. SHAH; J. MAO; A. J. J. RAASSEN; J. DE PLAA et al.

Základní údaje

Originální název

X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data

Autoři

Vydání

Astronomy and Astrophysics, EDP Sciences SA, 2022, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL, URL

Impakt faktor

Impact factor: 6.500

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00127022

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

atomic data; techniques: spectroscopic; stars: coronae; galaxies: clusters: intracluster medium

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 11. 2022 11:18, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

There has been a growing request from the X-ray astronomy community for a quantitative estimate of systematic uncertainties originating from the atomic data used in plasma codes. Though there have been several studies looking into atomic data uncertainties using theoretical calculations, in general, there is no commonly accepted solution for this task. We present a new approach for estimating uncertainties in the line emissivities for the current models of collisional plasma, mainly based upon a dedicated analysis of observed high resolution spectra of stellar coronae and galaxy clusters. We find that the systematic uncertainties of the observed lines consistently show an anticorrelation with the model line fluxes, after properly accounting for the additional uncertainties from the ion concentration calculation. The strong lines in the spectra are in general better reproduced, indicating that the atomic data and modeling of the main transitions are more accurate than those for the minor ones. This underlying anticorrelation is found to be roughly independent of source properties, line positions, ion species, and the line formation processes. We further applied our method to the simulated XRISM and Athena observations of collisional plasma sources and discuss the impact of uncertainties on the interpretation of these spectra. The typical uncertainties are 1–2% on temperature and 3–20% on abundances of O, Ne, Fe, Mg, and Ni.

Návaznosti

GX21-13491X, projekt VaV

Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)

Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback

MUNI/I/0003/2020, interní kód MU

Název: MUNI Award in Science and Humanities 3 (Akronym: Space-Based High-Energy Astrophysics)

Investor: Masarykova univerzita, MUNI Award in Science and Humanities 3, MASH - MUNI Award in Science and Humanities

871158, interní kód MU

Název: Integrated Activities for the High Energy Astrophysics Domain (AHEAD2020) (Akronym: AHEAD2020)

Investor: Evropská unie, Integrated Activities for the High Energy Astrophysics Domain (AHEAD2020), RI Research Infrastructures (Excellent Science)

Citovat

GU, L.; C. SHAH; J. MAO; A. J. J. RAASSEN; J. DE PLAA; C. PINTO; H. AKAMATSU; Norbert WERNER; A. SIMIONESCU; F. MERNIER; M. SAWADA; P. MOHANTY; P. AMARO; M. F. GU; F. S. PORTER; J. R. C. LOPEZ-URRUTIA a J. S. KAASTRA. X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data. Astronomy and Astrophysics. EDP Sciences SA, 2022, roč. 664, August, s. 1-17. ISSN 0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202039943.

@article{2227339,
   author = {Gu, L. and Shah, C. and Mao, J. and Raassen, A. J. J. and de Plaa, J. and Pinto, C. and Akamatsu, H. and Werner, Norbert and Simionescu, A. and Mernier, F. and Sawada, M. and Mohanty, P. and Amaro, P. and Gu, M. F. and Porter, F. S. and LopezandUrrutia, J. R. C. and Kaastra, J. S.},
   article_number = {August},
   doi = {https://doi.org/10.1051/0004-6361/202039943},
   keywords = {atomic data; techniques: spectroscopic; stars: coronae; galaxies: clusters: intracluster medium},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data},
   url = {https://www.aanda.org/articles/aa/full_html/2022/08/aa39943-20/aa39943-20.html},
   volume = {664},
   year = {2022}
}

TY  - JOUR
ID  - 2227339
AU  - Gu, L. - Shah, C. - Mao, J. - Raassen, A. J. J. - de Plaa, J. - Pinto, C. - Akamatsu, H. - Werner, Norbert - Simionescu, A. - Mernier, F. - Sawada, M. - Mohanty, P. - Amaro, P. - Gu, M. F. - Porter, F. S. - Lopez-Urrutia, J. R. C. - Kaastra, J. S.
PY  - 2022
TI  - X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data
JF  - Astronomy and Astrophysics
VL  - 664
IS  - August
SP  - 1-17
EP  - 1-17
PB  - EDP Sciences SA
SN  - 00046361
KW  - atomic data
KW  - techniques: spectroscopic
KW  - stars: coronae
KW  - galaxies: clusters: intracluster medium
UR  - https://www.aanda.org/articles/aa/full_html/2022/08/aa39943-20/aa39943-20.html
N2  - There has been a growing request from the X-ray astronomy community for a quantitative estimate of systematic uncertainties originating from the atomic data used in plasma codes. Though there have been several studies looking into atomic data uncertainties using theoretical calculations, in general, there is no commonly accepted solution for this task. We present a new approach for estimating uncertainties in the line emissivities for the current models of collisional plasma, mainly based upon a dedicated analysis of observed high resolution spectra of stellar coronae and galaxy clusters. We find that the systematic uncertainties of the observed lines consistently show an anticorrelation with the model line fluxes, after properly accounting for the additional uncertainties from the ion concentration calculation. The strong lines in the spectra are in general better reproduced, indicating that the atomic data and modeling of the main transitions are more accurate than those for the minor ones. This underlying anticorrelation is found to be roughly independent of source properties, line positions, ion species, and the line formation processes. We further applied our method to the simulated XRISM and Athena observations of collisional plasma sources and discuss the impact of uncertainties on the interpretation of these spectra. The typical uncertainties are 1–2% on temperature and 3–20% on abundances of O, Ne, Fe, Mg, and Ni.
ER  -

GU, L.; C. SHAH; J. MAO; A. J. J. RAASSEN; J. DE PLAA; C. PINTO; H. AKAMATSU; Norbert WERNER; A. SIMIONESCU; F. MERNIER; M. SAWADA; P. MOHANTY; P. AMARO; M. F. GU; F. S. PORTER; J. R. C. LOPEZ-URRUTIA a J. S. KAASTRA. X-ray spectra of the Fe-L complex III. Systematic uncertainties in atomic data. \textit{Astronomy and Astrophysics}. EDP Sciences SA, 2022, roč.~664, August, s.~1-17. ISSN~0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202039943.

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