Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

SISA: The First Extreme-Ultraviolet Solar Integral Field Spectrograph Using Slicers

Ariadna Calcines Rosario
* ORCID logo ,
Hamish Andrew Sinclair Reid
,
Sarah Matthews
,
Frédéric Auchère
,
Alain Jody Corso
ORCID logo ,
Giulio Del Zanna
,
Jaroslav Dudik
,
Samuel Gissot
,
Laura Hayes
,
Graham Stewart Kerr
,
Christian Kintziger
ORCID logo ,
Sophie Musset
ORCID logo ,
Vanessa Polito
,
Daniel F. Ryan
,
David Orozco Suárez
Version 1 : Received: 28 November 2023 / Approved: 29 November 2023 / Online: 29 November 2023 (10:56:44 CET)

A peer-reviewed article of this Preprint also exists.

Calcines Rosario, A.; Auchère, F.; Corso, A.J.; Del Zanna, G.; Dudík, J.; Gissot, S.; Hayes, L.A.; Kerr, G.S.; Kintziger, C.; Matthews, S.A.; Musset, S.; Orozco Suárez, D.; Polito, V.; Reid, H.A.S.; Ryan, D.F. Spectral Imager of the Solar Atmosphere: The First Extreme-Ultraviolet Solar Integral Field Spectrograph Using Slicers. Aerospace 2024, 11, 208. Calcines Rosario, A.; Auchère, F.; Corso, A.J.; Del Zanna, G.; Dudík, J.; Gissot, S.; Hayes, L.A.; Kerr, G.S.; Kintziger, C.; Matthews, S.A.; Musset, S.; Orozco Suárez, D.; Polito, V.; Reid, H.A.S.; Ryan, D.F. Spectral Imager of the Solar Atmosphere: The First Extreme-Ultraviolet Solar Integral Field Spectrograph Using Slicers. Aerospace 2024, 11, 208.

Abstract

Particle acceleration, and the thermalisation of energetic particles, are fundamental processes across the universe. Whilst the Sun is an excellent object to study this phenomenon, since it is the most energetic particle accelerator in the Solar System, this phenomenon arises in many other astrophysical objects, such as active galactic nuclei, black holes, neutron stars, gamma ray bursts, solar and stellar coronae, accretion disks and planetary magnetospheres. Observations in the Extreme Ultraviolet (EUV) are essential for these studies but can only be made from space. Current spectrographs operating in the EUV use an entrance slit and cover the required field of view using a scanning mechanism. This results in a relatively slow image cadence on the order of minutes to capture inherently rapid and transient processes, and/or in the spectrograph slit `missing the action'. The application of image slicers for EUV integral field spectrographs is therefore revolutionary. The development of this technology will enable observations of EUV spectra from an entire 2D field of view in seconds, over two orders of magnitude faster than what is currently possible. The Spectral Imaging of the Solar Atmosphere (SISA) instrument is the first integral field spectrograph proposed for observations at 180A combining the image slicer technology and curved diffraction gratings in a highly efficient and compact layout, while providing important spectroscopic diagnostics for characterization of solar coronal and flare plasmas. SISA's characteristics, main challenges and the on-going activities to enable the image slicer technology for EUV applications are presented in this paper.

Keywords

EUV Spectroscopy; solar IFS; EUV slicers; image slicers; solar space mission; particle acceleration

Subject

Physical Sciences, Astronomy and Astrophysics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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