First perihelion of EUI on the Solar Orbiter mission

D. Berghmans; P. Antolin; F. Auchère; R. Aznar Cuadrado; K. Barczynski; L. P. Chitta; S. Gissot; L. Harra; Z. Huang; M. Janvier; E. Kraaikamp; D. M. Long; S. Mandal; M. Mierla; S. Parenti; H. Peter; L. Rodriguez; U. Schühle; P. J. Smith; S. K. Solanki; K. Stegen; L. Teriaca; C. Verbeeck; M. J. West; A. N. Zhukov; T. Appourchaux; G. Aulanier; E. Buchlin; F. Delmotte; J. M. Gilles; M. Haberreiter; J. -P. Halain; K. Heerlein; J. -F. Hochedez; M. Gyo; S. Poedts; P. Rochus

doi:10.1051/0004-6361/202245586

First perihelion of EUI on the Solar Orbiter mission

D. Berghmans, P. Antolin, F. Auchère, R. Aznar Cuadrado, K. Barczynski, L. P. Chitta, S. Gissot, L. Harra, Z. Huang, M. Janvier, E. Kraaikamp, D. M. Long, S. Mandal, M. Mierla, S. Parenti, H. Peter, L. Rodriguez, U. Schühle, P. J. Smith, S. K. SolankiK. Stegen, L. Teriaca, C. Verbeeck, M. J. West, A. N. Zhukov, T. Appourchaux, G. Aulanier, E. Buchlin, F. Delmotte, J. M. Gilles, M. Haberreiter, J. -P. Halain, K. Heerlein, J. -F. Hochedez, M. Gyo, S. Poedts, P. Rochus

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Abstract

Context
The Extreme Ultraviolet Imager (EUI) on board Solar Orbiter consists of three telescopes: the two High Resolution Imagers, in EUV (HRIEUV) and in Lyman-α (HRILya), and the Full Sun Imager (FSI). Solar Orbiter/EUI started its Nominal Mission Phase on 2021 November 27.

Aims
Our aim is to present the EUI images from the largest scales in the extended corona off-limb down to the smallest features at the base of the corona and chromosphere. EUI is therefore a key instrument for the connection science that is at the heart of the Solar Orbiter mission science goals.

Methods
The highest resolution on the Sun is achieved when Solar Orbiter passes through the perihelion part of its orbit. On 2022 March 26, Solar Orbiter reached, for the first time, a distance to the Sun close to 0.3 au. No other coronal EUV imager has been this close to the Sun.

Results
We review the EUI data sets obtained during the period 2022 March–April, when Solar Orbiter quickly moved from alignment with the Earth (2022 March 6), to perihelion (2022 March 26), to quadrature with the Earth (2022 March 29). We highlight the first observational results in these unique data sets and we report on the in-flight instrument performance.

Conclusions
EUI has obtained the highest resolution images ever of the solar corona in the quiet Sun and polar coronal holes. Several active regions were imaged at unprecedented cadences and sequence durations. We identify in this paper a broad range of features that require deeper studies. Both FSI and HRIEUV operated at design specifications, but HRILya suffered from performance issues near perihelion. We conclude by emphasizing the EUI open data policy and encouraging further detailed analysis of the events highlighted in this paper.

Original language	English
Article number	A110
Number of pages	19
Journal	Astronomy and Astrophysics
Volume	675
DOIs	https://doi.org/10.1051/0004-6361/202245586
Publication status	Published - 07 Jul 2023
Externally published	Yes

Keywords

astro-ph.SR
physics.space-ph

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10.1051/0004-6361/202245586Licence: CC BY

First perihelion of EUI on the Solar Orbiter mission
Copyright 2023 The Authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 58.1 MBLicence: CC BY

Cite this

Berghmans, D., Antolin, P., Auchère, F., Cuadrado, R. A., Barczynski, K., Chitta, L. P., Gissot, S., Harra, L., Huang, Z., Janvier, M., Kraaikamp, E., Long, D. M., Mandal, S., Mierla, M., Parenti, S., Peter, H., Rodriguez, L., Schühle, U., Smith, P. J., ... Rochus, P. (2023). First perihelion of EUI on the Solar Orbiter mission. Astronomy and Astrophysics, 675, Article A110. https://doi.org/10.1051/0004-6361/202245586

@article{b4db5ca2c2684a4cbac20c2c455c20ef,

title = "First perihelion of EUI on the Solar Orbiter mission",

abstract = "ContextThe Extreme Ultraviolet Imager (EUI) on board Solar Orbiter consists of three telescopes: the two High Resolution Imagers, in EUV (HRIEUV) and in Lyman-α (HRILya), and the Full Sun Imager (FSI). Solar Orbiter/EUI started its Nominal Mission Phase on 2021 November 27.AimsOur aim is to present the EUI images from the largest scales in the extended corona off-limb down to the smallest features at the base of the corona and chromosphere. EUI is therefore a key instrument for the connection science that is at the heart of the Solar Orbiter mission science goals.MethodsThe highest resolution on the Sun is achieved when Solar Orbiter passes through the perihelion part of its orbit. On 2022 March 26, Solar Orbiter reached, for the first time, a distance to the Sun close to 0.3 au. No other coronal EUV imager has been this close to the Sun.ResultsWe review the EUI data sets obtained during the period 2022 March–April, when Solar Orbiter quickly moved from alignment with the Earth (2022 March 6), to perihelion (2022 March 26), to quadrature with the Earth (2022 March 29). We highlight the first observational results in these unique data sets and we report on the in-flight instrument performance.ConclusionsEUI has obtained the highest resolution images ever of the solar corona in the quiet Sun and polar coronal holes. Several active regions were imaged at unprecedented cadences and sequence durations. We identify in this paper a broad range of features that require deeper studies. Both FSI and HRIEUV operated at design specifications, but HRILya suffered from performance issues near perihelion. We conclude by emphasizing the EUI open data policy and encouraging further detailed analysis of the events highlighted in this paper.",

keywords = "astro-ph.SR, physics.space-ph",

author = "D. Berghmans and P. Antolin and F. Auch{\`e}re and Cuadrado, {R. Aznar} and K. Barczynski and Chitta, {L. P.} and S. Gissot and L. Harra and Z. Huang and M. Janvier and E. Kraaikamp and Long, {D. M.} and S. Mandal and M. Mierla and S. Parenti and H. Peter and L. Rodriguez and U. Sch{\"u}hle and Smith, {P. J.} and Solanki, {S. K.} and K. Stegen and L. Teriaca and C. Verbeeck and West, {M. J.} and Zhukov, {A. N.} and T. Appourchaux and G. Aulanier and E. Buchlin and F. Delmotte and Gilles, {J. M.} and M. Haberreiter and Halain, {J. -P.} and K. Heerlein and Hochedez, {J. -F.} and M. Gyo and S. Poedts and P. Rochus",

year = "2023",

month = jul,

day = "7",

doi = "10.1051/0004-6361/202245586",

language = "English",

volume = "675",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Berghmans, D, Antolin, P, Auchère, F, Cuadrado, RA, Barczynski, K, Chitta, LP, Gissot, S, Harra, L, Huang, Z, Janvier, M, Kraaikamp, E, Long, DM, Mandal, S, Mierla, M, Parenti, S, Peter, H, Rodriguez, L, Schühle, U, Smith, PJ, Solanki, SK, Stegen, K, Teriaca, L, Verbeeck, C, West, MJ, Zhukov, AN, Appourchaux, T, Aulanier, G, Buchlin, E, Delmotte, F, Gilles, JM, Haberreiter, M, Halain, J-P, Heerlein, K, Hochedez, J-F, Gyo, M, Poedts, S & Rochus, P 2023, 'First perihelion of EUI on the Solar Orbiter mission', Astronomy and Astrophysics, vol. 675, A110. https://doi.org/10.1051/0004-6361/202245586

TY - JOUR

T1 - First perihelion of EUI on the Solar Orbiter mission

AU - Berghmans, D.

AU - Antolin, P.

AU - Auchère, F.

AU - Cuadrado, R. Aznar

AU - Barczynski, K.

AU - Chitta, L. P.

AU - Gissot, S.

AU - Harra, L.

AU - Huang, Z.

AU - Janvier, M.

AU - Kraaikamp, E.

AU - Long, D. M.

AU - Mandal, S.

AU - Mierla, M.

AU - Parenti, S.

AU - Peter, H.

AU - Rodriguez, L.

AU - Schühle, U.

AU - Smith, P. J.

AU - Solanki, S. K.

AU - Stegen, K.

AU - Teriaca, L.

AU - Verbeeck, C.

AU - West, M. J.

AU - Zhukov, A. N.

AU - Appourchaux, T.

AU - Aulanier, G.

AU - Buchlin, E.

AU - Delmotte, F.

AU - Gilles, J. M.

AU - Haberreiter, M.

AU - Halain, J. -P.

AU - Heerlein, K.

AU - Hochedez, J. -F.

AU - Gyo, M.

AU - Poedts, S.

AU - Rochus, P.

PY - 2023/7/7

Y1 - 2023/7/7

N2 - ContextThe Extreme Ultraviolet Imager (EUI) on board Solar Orbiter consists of three telescopes: the two High Resolution Imagers, in EUV (HRIEUV) and in Lyman-α (HRILya), and the Full Sun Imager (FSI). Solar Orbiter/EUI started its Nominal Mission Phase on 2021 November 27.AimsOur aim is to present the EUI images from the largest scales in the extended corona off-limb down to the smallest features at the base of the corona and chromosphere. EUI is therefore a key instrument for the connection science that is at the heart of the Solar Orbiter mission science goals.MethodsThe highest resolution on the Sun is achieved when Solar Orbiter passes through the perihelion part of its orbit. On 2022 March 26, Solar Orbiter reached, for the first time, a distance to the Sun close to 0.3 au. No other coronal EUV imager has been this close to the Sun.ResultsWe review the EUI data sets obtained during the period 2022 March–April, when Solar Orbiter quickly moved from alignment with the Earth (2022 March 6), to perihelion (2022 March 26), to quadrature with the Earth (2022 March 29). We highlight the first observational results in these unique data sets and we report on the in-flight instrument performance.ConclusionsEUI has obtained the highest resolution images ever of the solar corona in the quiet Sun and polar coronal holes. Several active regions were imaged at unprecedented cadences and sequence durations. We identify in this paper a broad range of features that require deeper studies. Both FSI and HRIEUV operated at design specifications, but HRILya suffered from performance issues near perihelion. We conclude by emphasizing the EUI open data policy and encouraging further detailed analysis of the events highlighted in this paper.

AB - ContextThe Extreme Ultraviolet Imager (EUI) on board Solar Orbiter consists of three telescopes: the two High Resolution Imagers, in EUV (HRIEUV) and in Lyman-α (HRILya), and the Full Sun Imager (FSI). Solar Orbiter/EUI started its Nominal Mission Phase on 2021 November 27.AimsOur aim is to present the EUI images from the largest scales in the extended corona off-limb down to the smallest features at the base of the corona and chromosphere. EUI is therefore a key instrument for the connection science that is at the heart of the Solar Orbiter mission science goals.MethodsThe highest resolution on the Sun is achieved when Solar Orbiter passes through the perihelion part of its orbit. On 2022 March 26, Solar Orbiter reached, for the first time, a distance to the Sun close to 0.3 au. No other coronal EUV imager has been this close to the Sun.ResultsWe review the EUI data sets obtained during the period 2022 March–April, when Solar Orbiter quickly moved from alignment with the Earth (2022 March 6), to perihelion (2022 March 26), to quadrature with the Earth (2022 March 29). We highlight the first observational results in these unique data sets and we report on the in-flight instrument performance.ConclusionsEUI has obtained the highest resolution images ever of the solar corona in the quiet Sun and polar coronal holes. Several active regions were imaged at unprecedented cadences and sequence durations. We identify in this paper a broad range of features that require deeper studies. Both FSI and HRIEUV operated at design specifications, but HRILya suffered from performance issues near perihelion. We conclude by emphasizing the EUI open data policy and encouraging further detailed analysis of the events highlighted in this paper.

KW - astro-ph.SR

KW - physics.space-ph

U2 - 10.1051/0004-6361/202245586

DO - 10.1051/0004-6361/202245586

M3 - Article

SN - 0004-6361

VL - 675

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A110

ER -

First perihelion of EUI on the Solar Orbiter mission

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Keywords

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