6 papers
Brightenings AnD Polarity Inversion Tracking (BADPIT) method for studying solar active region evolution before major solar flares
Augustin André-Hoffmann, Marianna B. Korsós, Alexander Nindos +3
This study investigates the relationship between extreme ultraviolet (EUV) transient brightenings (TBs) and the onset of GOES X-class solar flares in active regions (ARs). We intro…
Ensemble modeling of Coronal Mass Ejection dynamics and forecasts at 1 AU with a semi-analytic flux-rope model
S. Stamkos, S. Patsourakos, A. Vourlidas +1
This study quantifies how uncertainty in physically meaningful coronal mass ejection (CME) and solar-wind inputs propagates into forecast-relevant diagnostics from eruption to 1 AU…
Signatures of coronal mass ejections in differential emission measure analysis of the Sun as a star
Angelos Michailidis, Spiros Patsourakos
We investigated if signatures of coronal mass ejections (CMEs) can be retrieved in the differential emission measure (DEM) from Sun-as-a-star extreme-ultraviolet (EUV) observations…
Magnetic helicity and energy budgets of jet events from an emerging solar active region
A. Nindos, S. Patsourakos, K. Moraitis +4
Using photospheric vector magnetograms obtained by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory and a magnetic connectivity-based method, we compute…
Case studies on pre-eruptive X-class flares using R-value in the lower solar atmosphere
Shreeyesh Biswal, Marianna B. Korsós, Manolis K. Georgoulis +3
The R-value is a measure of the strength of photospheric magnetic Polarity Inversion Lines (PILs) in Active Regions (ARs). This work investigates the possibility of a relation betw…
Assessment of the near-Sun magnetic field of the 10 March 2022 coronal mass ejection observed by Solar Orbiter
Shifana Koya, Spiros Patsourakos, Manolis K. Georgoulis +1
We estimate the near-Sun axial magnetic field of a coronal mass ejection (CME) on 10 March 2022. Solar Orbiter's in situ measurements, 7.8 degrees east of the Sun-Earth line at 0.4…