Modelling the 2020 November 29 solar energetic particle event using the EUHFORIA and the iPATH model
arXiv:2210.16967 · doi:10.1051/0004-6361/202244732
Abstract
We present the implementation of coupling the EUropean Heliospheric FORcasting Information Asset (EUHFORIA) and the improved Particle Acceleration and Transport in the Heliosphere (iPATH) model and simulate the widespread solar energetic particle (SEP) event of 2020 November 29. We compare the simulated time intensity profiles with measurements at Parker Solar Probe (PSP), the Solar Terrestrial Relations Observatory (STEREO)-A, SOlar and Heliospheric Observatory (SOHO) and Solar Orbiter (SolO). We focus on the influence of the history of shock acceleration on the varying SEP time intensity profiles and investigate the underlying causes in the origin of this widespread SEP event. The temporal evolution of shock parameters and particle fluxes during this event are examined. We find that adopting a realistic solar wind background can significantly impact the expansion of the shock and consequently the shock parameters. Time intensity profiles with an energetic storm particle event at PSP are well reproduced from the simulation. In addition, the simulated and observed time intensity profiles of protons show a similar two-phase enhancement at STA. These results illustrate that modelling a shock using a realistic solar wind is crucial in determining the characteristics of SEP events. The decay phase of the modelled time intensity profiles at Earth agrees well with observations, indicating the importance of perpendicular diffusion in widespread SEP events. Taking into account the possible large curved magnetic field line connecting to SolO, the modelled time intensity profiles show good agreement with the observation. We suggest that the largely distorted magnetic field lines due to a stream interaction region may be a key factor in understanding the observed SEPs at SolO in this event.
13 pages, 9 figures. Accepted for publication at A&A
References in corpus (13)
- The Evolution and Role of Solar Wind Turbulence in the Inner Heliosphere
- Observation-based modelling of magnetised Coronal Mass Ejections with EUHFORIA
- Turbulence Transport Modeling and First Orbit Parker Solar Probe (PSP) Observations
- Global Numerical Modeling of Energetic Proton Acceleration in a Coronal Mass Ejection Traveling through the Solar Corona
- Modelling three-dimensional transport of solar energetic protons in a corotating interaction region generated with EUHFORIA
- Observation-based modelling of the energetic storm particle event of 14 July 2012
- CMEs and SEPs During November-December 2020: A Challenge for Real-Time Space Weather Forecasting
- A Self-consistent Simulation of Proton Acceleration and Transport Near a High-speed Solar Wind Stream
- Energetic Proton Propagation and Acceleration Simulated for the Bastille Day Event of July 14, 2000
- Assessing the Influence of Input Magnetic Maps on Global Modeling of the Solar Wind and CME-driven Shock in the 2013 April 11 Event
- Direct First PSP Observation of the Interaction of Two Successive Interplanetary Coronal Mass Ejections in November 2020
- Effect of Star Rotation Rates on the Characteristics of Energetic Particle Events
- First report of a solar energetic particle event observed by China's Tianwen-1 mission in transit to Mars