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Investigating Solar Wind Outflows from Open-Closed Magnetic Field Structures Using Coordinated Solar Orbiter and Hinode Observations

Ngampoopun, Nawin, Susino, Roberto, Brooks, David H., Lionello, Roberto, Abbo, Lucia, Spadaro, Daniele, Baker, Deborah, Green, Lucie M., Long, David M. orcid logoORCID: 0000-0003-3137-0277, Yardley, Stephanie L., James, Alexander W., Romoli, Marco, Giordano, Silvio M., Burtovoi, Aleksandr, Landini, Federico and Russano, Giuliana (2025) Investigating Solar Wind Outflows from Open-Closed Magnetic Field Structures Using Coordinated Solar Orbiter and Hinode Observations. Solar Physics, 300 (4). p. 45. ISSN 1573-093X

Abstract
ESA/NASA’s Solar Orbiter (SO) allows us to study the solar corona at closer distances and from different perspectives, which helps us to gain significant insights into the origins of the solar wind. In this work, we present the analysis of solar wind outflows from two locations: a narrow open-field corridor and a small, mid-latitude coronal hole. These outflows were observed off-limb by the Metis coronagraph onboard SO and on-disk by the Extreme Ultraviolet Imaging Spectrometer (EIS) onboard Hinode. Magnetic field extrapolations suggest that the upflow regions seen in EIS were the sources of the outflowing solar wind observed with Metis. We find that the plasma associated with the narrow open-field corridor has higher electron densities and lower outflow velocities compared to the coronal hole plasma in the middle corona, even though the plasma properties of the two source regions in the low corona are found to be relatively similar. The speed of solar wind from the open-field corridor also shows no correlation with the magnetic field expansion factor, unlike the coronal hole.
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Physical Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astrophysics - Solar and Stellar Astrophysics
Subjects:Physical Sciences > Astronomy
Physical Sciences > Astronomy > Astrophysics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:Springer Dordrecht
Official URL:https://arxiv.org/abs/2502.08290
Copyright Information:Authors
ID Code:33332
Deposited On:21 Sep 2026 14:44 by David Long . Last Modified 21 Sep 2026 14:44
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