KU Leuven CmPA Seminar: Studying the SEP Event of 15 March 2015 with EUHFORIA and PARADISE

KU Leuven Centre for mathematical Plasma-Astrophysics Seminar

Title:     Studying the SEP Event of 15 March 2015 with EUHFORIA and PARADISE

Speaker: Antonio Esteban Niemela from CmPA


We model the gradual solar energetic particle (SEP) event that was observed by near-Earth spacecraft on March 15, 2013. This is done by using the model PARADISE (PArticle Radiation Asset Directed at Interplanetary Space Exploration), which simulates the transport of SEPs through non-nominal solar wind configurations generated by the magnetohydrodynamic (MHD) done with EUHFORIA (EUropean Heliospheric FORecast Information Asset), a 3D-MHD tool that forecasts heliospheric solar wind and Coronal Mass Ejections (CME) evolution. 

The event starts on March 15, with a GOES M 1.1 X-ray flare was observed originating from the NOAA active region 11692 and with peak intensity registered at 06:58 UT. An Earth-directed asymmetric halo CME erupted from the Sun at 07:12UT, as seen by the coronagraphs aboard SOHO and STEREO. On March 16, the particle counts at L1 started increasing. A first sudden increase was registered, for energies up to 80 MeV, at around 20:00 UT and almost 6 hours after, the bulk of the particles arrived and the flux remained enhanced until the ICME ended on March 17, at around 06:00 UT.

Several CMEs occurred in the days prior to the solar eruption of March 15. These proceeding CMEs disturbed the solar wind, which may have affected the interplanetary transport of the SEPs, potentially explaining the delayed onset of the SEP event at Earth. To investigate this effect with the PARADISE model, also the preceding CMEs were included in the EUHFORIA simulation by using the CME Cone model. The main CME event was simulated using the Spheromak model, which approximates the CME's magnetic cloud by a linear force-free spheroidal magnetic field.


The seminars are in hybrid mode, you can follow in person in room 200B 02.16 or online  at the (permanent) link:


Date and time: Thursday, March 17, 2022 - 14:00 to 15:00


Thursday, March 17, 2022 - 14:00 to 15:00

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