9 papers
Solar Orbiter SEP Dropout during a Magnetic Cloud with Evidence for Strong Connectivity Gradients
Radoslav Bucik, Raul Gomez-Herrero, Samuel T. Hart +2
We analyze an impulsive solar energetic particle (SEP) event observed by Solar Orbiter at 0.93 au on 2022 December 24 that exhibits a pronounced intensity dropout between approxima…
Sunward Streaming 3He-rich SEP Events Observed by Solar Orbiter and Parker Solar Probe during Perihelion Passage
Samuel T. Hart, George C. Ho, Michael R. Terres +7
We report on two 3He-rich solar energetic particle (SEP) events observed by Solar Orbiter (SO) and Parker Solar Probe (PSP) during the April 1 - 4, 2024 conjunction when both space…
Helium-3 Enrichment in Gradual Solar Energetic Particle Events: Evidence for Jet-Supplied Seed Population
R. Bucik, S. T. Hart, M. A. Dayeh +3
Enhancements in 3He abundance, a characteristic feature of impulsive solar energetic particle (ISEP) events, are also frequently observed in gradual SEP (GSEP) events. Understandin…
Polytropic Behavior in Corotating Interaction Regions: Evidence of Alfvénic Heating
M. A. Dayeh, M. J. Starkey, G. Livadiotis +5
Corotating Interaction Regions (CIRs) are recurring structures in the solar wind, characterized by interactions between fast and slow solar wind streams that compress and heat plas…
Global Heliospheric Termination Shock Strength in the Solar-Interstellar Interaction
E. J. Zirnstein, R. Kumar, B. L. Shrestha +4
A heliospheric termination shock (HTS) surrounds our solar system at approximately 100 astronomical units from the Sun, where the expanding solar wind (SW) is compressed and heated…
Comparing Methods for Calculating Solar Energetic Particle Intensities: Re-binning versus Spectral Binning
M. E. Cuesta, L. Y. Khoo, G. Livadiotis +13
Solar energetic particle (SEP) events have been observed for decades in the interplanetary medium by spacecraft measuring the intensity of energetic ions and electrons. These inten…