Search Publications
Flux rope breaking and formation of a rotating blowout jet
Joshi, Navin Chandra; Nishizuka, Naoto; Filippov, Boris +2 more
We analysed a small flux rope eruption converted into a helical blowout jet in a fan-spine configuration using multiwavelength observations taken by Solar Dynamics Observatory, which occurred near the limb on 2016 January 9. In our study, first, we estimated the fan-spine magnetic configuration with the potential-field calculation and found a sini…
Helium abundance and speed difference between helium ions and protons in the solar wind from coronal holes, active regions, and quiet Sun
Fu, Hui; Madjarska, Maria S.; Li, Bo +2 more
Two main models have been developed to explain the mechanisms of release, heating, and acceleration of the nascent solar wind, the wave-turbulence-driven (WTD) models and reconnection-loop-opening (RLO) models, in which the plasma release processes are fundamentally different. Given that the statistical observational properties of helium ions prod…
Stellar pulsation and granulation as noise sources in exoplanet transit spectroscopy in the ARIEL space mission
Vandenbussche, Bart; Pascale, Enzo; Argyriou, Ioannis +2 more
Stellar variability from pulsations and granulation presents a source of correlated noise that can impact the accuracy and precision of multiband photometric transit observations of exoplanets. This can potentially cause biased measurements in the transmission or emission spectrum or underestimation of the final error bars on the spectrum. ARIEL i…
Magnetic evolution linked to the interrelated activity complexes involving transequatorial coronal holes
Gutiérrez, Heidy; Taliashvili, Lela; Lazarian, Alexandre
We studied a magnetic evolution linked to a cadence of interrelated activities developed in a large solar region during Carrington rotations, CRs 2119-2121, based on multiwavelength and multispacecraft observations. Three coronal holes (CHs), two transequatorial and one isolated, eight filaments and some active regions were distributed closely in …
Observation of galactic cosmic ray spallation events from the SoHO mission 20-yr operation of LASCO
Koutchmy, S.; Tavabi, E.; Urtado, O.
A shower of secondary cosmic ray (CR) particles is produced at high altitudes in the Earth's atmosphere, so the primordial galactic cosmic rays (GCRs) are never directly measured outside the Earth magnetosphere and atmosphere. They approach the Earth and other planets in the complex pattern of rigidity's dependence, generally excluded by the magne…