COSMOS Science Nuggets - Solar Orbiter

Science Nuggets - Solar Orbiter

Solar Orbiter Science Nuggets

Science Nugget: The First Joint Observations of EUV Jets and Spicules with Solar Orbiter and BBSO

10 December 2025

Small-scale jet-like ejections and eruptions (SSEs), such as chromospheric type II spicules, mini-filaments, and transition-region or coronal jets, are widely believed to contribute substantially to the coronal energy budget, to influence the structuring of the corona, and to facilitate mass transport into the solar wind. A new opportunity... read more

Science Nugget: Solar Orbiter Reveals Ultra-fine Magnetic Reconnection Processes in Filament Eruptions

3 December 2025

Solar filaments are cool and dense magnetized plasma structures in the corona. Their destabilization and eruption are key processes that trigger coronal mass ejections (CMEs) and flares. Decades of observations and theoretical and numerical simulation studies have revealed the physical nature of filament eruptions: it is a process of magnetic... read more

Science Nugget: Thin Coronal Jets and Plasmoid-mediated Reconnection: Insights from Solar Orbiter Observations and Bifrost Simulations.

19 November 2025

Coronal Bright Points (CBPs) are ubiquitous small-scale magnetic structures in the solar corona, consisting of million-Kelvin loops rooted in the photospheric network. They radiate copious amounts of energy and cover the Sun almost uniformly, making them key ingredients in the quest to understand coronal heating. CBPs are also textbook sites... read more

Science Nugget: Near Continuous Tracking of a Super Active Region for Three Solar Rotations

12 November 2025

Active regions are regions on the Sun where extended, strong, and often complex magnetic fields are measured. They are formed when strongly magnetized plasma emerges from the interior of the Sun. They often host strong eruptive events like flares and coronal mass ejections, during which the stored magnetic energy is converted into... read more

Science Nugget: The Solar Orbiter merged magnetic field dataset

5 November 2025

Like other space missions, Solar Orbiter embarks two experiences to fully measure the varying magnetic field of the solar wind: the fluxgate magnetometer MAG, which is best suited for frequencies from DC to a few Hertz, and the search coil magnetometer SCM, which is best suited for frequencies above a few Hertz. Measuring the magnetic field... read more

Science Nugget: Generalized Two Thermal Regimes Approach: Bipoly Fluid Modeling

15 October 2025

The observed non-adiabatic evolution of the solar wind leaving the solar atmosphere traduce the presence of heating mechanism. Regarding the inner heliosphere evolution, observational studies [1,2,3] have shown that the temperature of protons and electrons appear to decrease slower with radial distance than a theoretically expected. The... read more

Science Nugget: First coordinated observations between Solar Orbiter and the Daniel K. Inouye Solar Telescope

8 October 2025

The Solar Orbiter mission and US National Science Foundation DKIST are two of the most advanced observatories available to the solar physics community. Together, these two high-resolution observatories mark a new era in solar observation. By capturing the Sun from two distinct vantage points, they offer stereoscopic views of the solar... read more

Science nugget: Solar Orbiter’s CoSEE-Cat: A large statistical study of the acceleration and transport of energetic electrons in the corona and inner heliosphere

1 October 2025

ESA’s Solar Orbiter provides two unique advantages for the study of SEEs. Firstly, its comprehensive suite of in-situ and remote-sensing instruments covers all relevant types of observables. Having all these assets on a single platform is a great advantage and results in a high duty cycle. Secondly, Solar Orbiter samples SEEs over a wide... read more

Science nugget: Observational Constraints on the Radial Evolution of O6+ Temperature and Differential Flow in the Inner Heliosphere

24 September 2025

This work examines the radial evolution of O6+ drift speed and temperature between 0.3 and 1 au to analyze its behavior in the solar wind.

Science nugget: The delayed arrival of faster solar energetic particles as a probe into the shock acceleration process

17 September 2025

This study reports 10 IVD proton events detected by SO and presents a detailed analysis of three events to probe the underlying physics. We find that the IVD features can be well interpreted by the diffusive shock acceleration (DSA) mechanism through which particles need longer time to obtain higher energies before being released from the... read more

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