X-ray spectra of the Fe-L complex: II. Atomic data constraints
from the EBIT experiment and X-ray grating observations of
Capella

J 2020

X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella

LY, Gu, CT SHAH, J.J. MAO, T. RAASSEN, J. DE PLAA et. al.

Základní údaje

Originální název

X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella

Autoři

LY, Gu (528 Nizozemské království, garant), CT SHAH (840 Spojené státy), J.J. MAO (156 Čína), T. RAASSEN (528 Nizozemské království), J. DE PLAA (528 Nizozemské království), C. PINTO (380 Itálie), H. AKAMATSU (528 Nizozemské království), Norbert WERNER (703 Slovensko, domácí), A. SIMIONESCU (642 Rumunsko), F. MERNIER (56 Belgie), M. SAWADA (392 Japonsko), P. MOHANTY (840 Spojené státy), P. AMARO (840 Spojené státy), MF GU (840 Spojené státy), F.S. PORTER (840 Spojené státy), JRC LOPEZ-URRUTIA (840 Spojené státy) a J.S. KAASTRA (528 Nizozemské království)

Vydání

Astronomy and Astrophysics, EDP Sciences, 2020, 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: 5.802

Kód RIV

RIV/00216224:14310/20:00116665

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1051/0004-6361/202037948

UT WoS

000573421200001

Klíčová slova anglicky

atomic data; methods: laboratory: atomic; techniques: spectroscopic; stars: coronae

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 11. 2022 11:58, Mgr. Marie Šípková, DiS.

Anotace

V originále

The Hitomi results for the Perseus cluster have shown that accurate atomic models are essential to the success of X-ray spectroscopic missions and just as important as the store of knowledge on instrumental calibration and astrophysical modeling. Preparing the models requires a multifaceted approach, including theoretical calculations, laboratory measurements, and calibration using real observations. In a previous paper, we presented a calculation of the electron impact cross sections on the transitions forming the Fe-L complex. In the present work, we systematically tested the calculation against cross-sections of ions measured in an electron beam ion trap experiment. A two-dimensional analysis in the electron beam energies and X-ray photon energies was utilized to disentangle radiative channels following dielectronic recombination, direct electron-impact excitation, and resonant excitation processes in the experimental data. The data calibrated through laboratory measurements were further fed into a global modeling of the Chandra grating spectrum of Capella. We investigated and compared the fit quality, as well as the sensitivity of the derived physical parameters to the underlying atomic data and the astrophysical plasma modeling. We further list the potential areas of disagreement between the observations and the present calculations, which, in turn, calls for renewed efforts with regard to theoretical calculations and targeted laboratory measurements.

Návaznosti

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

Citovat

LY, Gu, CT SHAH, J.J. MAO, T. RAASSEN, J. DE PLAA, C. PINTO, H. AKAMATSU, Norbert WERNER, A. SIMIONESCU, F. MERNIER, M. SAWADA, P. MOHANTY, P. AMARO, MF GU, F.S. PORTER, JRC LOPEZ-URRUTIA a J.S. KAASTRA. X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella. Astronomy and Astrophysics. EDP Sciences, 2020, roč. 641, č. 93, s. 1-28. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202037948.

@article{1685320,
   author = {LY, Gu and Shah, CT and Mao, J.J. and Raassen, T. 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, MF and Porter, F.S. and LopezandUrrutia, JRC and Kaastra, J.S.},
   article_number = {93},
   doi = {http://dx.doi.org/10.1051/0004-6361/202037948},
   keywords = {atomic data; methods: laboratory: atomic; techniques: spectroscopic; stars: coronae},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella},
   url = {https://www.aanda.org/articles/aa/pdf/2020/09/aa37948-20.pdf},
   volume = {641},
   year = {2020}
}

TY  - JOUR
ID  - 1685320
AU  - LY, Gu - Shah, CT - Mao, J.J. - Raassen, T. - de Plaa, J. - Pinto, C. - Akamatsu, H. - Werner, Norbert - Simionescu, A. - Mernier, F. - Sawada, M. - Mohanty, P. - Amaro, P. - Gu, MF - Porter, F.S. - Lopez-Urrutia, JRC - Kaastra, J.S.
PY  - 2020
TI  - X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella
JF  - Astronomy and Astrophysics
VL  - 641
IS  - 93
SP  - 1-28
EP  - 1-28
PB  - EDP Sciences
SN  - 00046361
KW  - atomic data
KW  - methods: laboratory: atomic
KW  - techniques: spectroscopic
KW  - stars: coronae
UR  - https://www.aanda.org/articles/aa/pdf/2020/09/aa37948-20.pdf
N2  - The Hitomi results for the Perseus cluster have shown that accurate atomic models are essential to the success of X-ray spectroscopic missions and just as important as the store of knowledge on instrumental calibration and astrophysical modeling. Preparing the models requires a multifaceted approach, including theoretical calculations, laboratory measurements, and calibration using real observations. In a previous paper, we presented a calculation of the electron impact cross sections on the transitions forming the Fe-L complex. In the present work, we systematically tested the calculation against cross-sections of ions measured in an electron beam ion trap experiment. A two-dimensional analysis in the electron beam energies and X-ray photon energies was utilized to disentangle radiative channels following dielectronic recombination, direct electron-impact excitation, and resonant excitation processes in the experimental data. The data calibrated through laboratory measurements were further fed into a global modeling of the Chandra grating spectrum of Capella. We investigated and compared the fit quality, as well as the sensitivity of the derived physical parameters to the underlying atomic data and the astrophysical plasma modeling. We further list the potential areas of disagreement between the observations and the present calculations, which, in turn, calls for renewed efforts with regard to theoretical calculations and targeted laboratory measurements.
ER  -

LY, Gu, CT SHAH, J.J. MAO, T. RAASSEN, J. DE PLAA, C. PINTO, H. AKAMATSU, Norbert WERNER, A. SIMIONESCU, F. MERNIER, M. SAWADA, P. MOHANTY, P. AMARO, MF GU, F.S. PORTER, JRC LOPEZ-URRUTIA a J.S. KAASTRA. X-ray spectra of the Fe-L complex: II. Atomic data constraints from the EBIT experiment and X-ray grating observations of Capella. \textit{Astronomy and Astrophysics}. EDP Sciences, 2020, roč.~641, č.~93, s.~1-28. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202037948.

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