The Astronomy & Astrophysics (A&A) journal has published a special issue featuring a series of 17 papers on the Solar Orbiter mission and its instruments.
The entire issue is open access and all papers can be downloaded following this link: https://www.aanda.org/component/toc/?task=topic&id=1082
List of mission papers:
1. The Solar Orbiter mision. Science overview (Mueller et al.)
2. The Solar Orbiter Science Activity Plan. Translating solar and heliospheric physics questions into action (Zouganelis et al.)
3. The Solar Orbiter spacecraft (Garcia Marirrodriga et al.)
4. Coordination of the in-situ payload of Solar Orbiter (Walsh et al.)
5. Coordination within the remote-sensing payload on the Solar Orbiter mission (Auchère et al.)
6. Models and data analysis tools for the Solar Orbiter mission (Rouillard et al.)
7. Integrating observations and measurements from Solar Orbiter, Parker Solar Probe and other space and ground-based observatories (Velli et al.)
List of instrument papers:
1. The Energetic Particle Detector (EPD, Rodriguez-Pacheco et al.)
2. The Extreme Ultraviolet Imager (EUI, Rochus et al.)
3. The magnetometer (MAG, Horbury et al.)
4. The visible light and ultraviolet coronal imager (Metis, Antonucci et al.)
5. The Polarimetric and Helioseismic Imager (SO/PHI, Solanki et al.)
6. The Radio and Plasma Waves instrument (RPW, Maksimovic et al.)
7. The Heliospheric Imager (SoloHI, Howard et al.)
8. The extreme UV imaging spectrometer (SPICE, SPICE Consortium)
9. The spectrometer/telescope for imaging X-rays (STIX, Krucker et al.)
10. The Solar Wind Analyser suite (SWA, Owen et al.)