activity
20022026
most citedThe Solar Orbiter Science Activity Plan: translating solar and heliospheric physics questions into action

112 citations · 1.1k across the 72 of their papers we have counts for

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Showing 2025Show all

13 papers · 1 filter

astro-ph.SR2025★ 3 cited

Origin of Unusual Composition of 3He-Rich Solar Energetic Particles

R. Bucik, G. M. Mason, S. M. Mulay +3

We examine 3He-rich solar energetic particles (SEPs) detected on 2023 October 24-25 by Solar Orbiter at 0.47 au. The measurements revealed that heavy-ion enhancements increase irre…

astro-ph.SR2025

Local Particle Acceleration in an ICME-in-Sheath Structure Observed by Solar Orbiter

Xiaomin Chen, Chuan Li, Zigong Xu +5

Local particle acceleration in the shock sheath region formed during the interaction between multiple coronal mass ejections (CMEs) is a complicated process that is still under inv…

astro-ph.SR2025★ 6 cited

CoSEE-Cat: A Comprehensive Solar Energetic Electron event Catalogue obtained from combined in situ and remote-sensing observations from Solar Orbiter -- Catalogue description and first statistical results

A. Warmuth, F. Schuller, R. Gómez-Herrero +39

(abridged) The acceleration of particles at the Sun and their propagation through interplanetary space are key topics in heliophysics. Specifically, solar energetic electrons (SEEs…

astro-ph.SR2025

Bidirectional anisotropic solar energetic particle events observed by Solar Orbiter

Zheyi Ding, Robert F. Wimmer-Schweingruber, Yu Chen +12

Solar Energetic Particle (SEP) events are critical for understanding particle acceleration and transport in the heliosphere. While most SEP events involve outward streaming particl…

astro-ph.SR2025★ 4 cited

A Tale of Two Shocks

Robert F. Wimmer-Schweingruber, Domenico Trotta, Rungployphan Kieokaew +23

Energetic particles in interplanetary space are normally measured at time scales that are long compared to the ion gyroperiod. Such observations by necessity average out the microp…

astro-ph.SR2025

Inverse Velocity Dispersion of Solar Energetic Protons Observed by Solar Orbiter and Its Shock Acceleration Explanation

Yuncong Li, Jingnan Guo, Daniel Pacheco +4

The particle acceleration and transport process during solar eruptions is one of the critical and long-standing problems in space plasma physics. Through decades of research, it is…

astro-ph.SR2025★ 1 cited

Probing Solar Polar Regions

Yuanyong Deng, Hui Tian, Jie Jiang +45

The magnetic fields and dynamical processes in the solar polar regions play a crucial role in the solar magnetic cycle and in supplying mass and energy to the fast solar wind, ulti…

astro-ph.SR2025

The high-energy protons of the ground level enhancement (GLE74) event on 11 May 2024

A. Papaioannou, A. Mishev, I. Usoskin +19

High energy solar protons were observed by particle detectors aboard spacecraft in near-Earth orbit on May 11, 2024 and produced the 74th ground level enhancement (GLE74) event reg…

astro-ph.SR2025★ 9 cited

Investigation of Inverse Velocity Dispersion in a Solar Energetic Particle Event Observed by Solar Orbiter

Zheyi Ding, F. Robert Wimmer-Schweingruber, Alexander Kollhoff +15

Inverse velocity dispersion (IVD) events, characterized by higher-energy particles arriving later than lower-energy particles, challenge the classical understanding of SEP events a…

astro-ph.SR2025

Three dimensional He+ pickup ion velocity distribution functions observed with STEREO-A PLASTIC

Duncan Keilbach, Verena Heidrich-Meisner, Lars Berger +1

Freshly injected interstellar Pickup Ions (PUIs) are expected to exhibit a simple, torus-shaped velocity distribution function. The PUI velocity in the solar wind frame depends on…

astro-ph.SR2025

Multispacecraft Observations of the 2024 September 9 Backside Solar Eruption that Resulted in a Sustained Gamma Ray Emission Event

Nat Gopalswamy, Pertti Mäkelä, Sachiko Akiyama +6

We report on the 2024 September 9 sustained gamma ray emission (SGRE) event observed by the Large Area Telescope (LAT) onboard the Fermi satellite. The event was associated with a…

physics.space-ph2025★ 1 cited

Nowcasting Solar Energetic Particle Events for Mars Missions

Jan Leo Löwe, Salman Khaksarighiri, Robert F. Wimmer-Schweingruber +8

In addition to the omnipresent Galactic Cosmic Rays (GCRs), sudden solar energetic particle (SEP) events present considerable health hazards for manned space missions. These events…

astro-ph.SR2025

Challenges in identifying the coronal hole wind

Verena Heidrich-Meisner, Sophie Teichmann, Lars Berger +1

Solar wind is frequently categorized based on its respective solar source region. Two well-established categorizations of the coronal hole wind, the scheme based on the charge-stat…