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Related papers: Updated Model of the Solar Energetic Proton Enviro…

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We present a new empirical model to predict solar energetic particle (SEP) event-integrated and peak intensity spectra between 10 and 130 MeV at 1 AU, based on multi-point spacecraft measurements from the Solar TErrestrial RElations…

Solar and Stellar Astrophysics · Physics 2021-02-24 Alessandro Bruno , Ian G. Richardson

Solar Energetic Particle (SEPs) with energies ranging from tens of keV to a few GeV, are a significant component in the description of the space environment. In this work, the HESPERIA REleASE product is emphasized, which, based on the…

Solar and Stellar Astrophysics · Physics 2025-02-24 Olga Malandraki , Michalis Karavolos , Arik Posner , Kostas Tziotziou , Henrik Droege , Bernd Heber , Patrick Kuehl

Extreme Solar Energetic Particle Events (ESPEs) were identified almost a decade ago, providing context for super events unleashed by our host star, the Sun. Their assumed solar origin drives the question of their ``worst-case" impact, which…

Space Physics · Physics 2025-04-09 Konstantin Herbst , Athanasios Papaioannou

Aims. The space radiation environment conditions and the maximum expected coronal mass ejection (CME) speed are being assessed through the investigation of scaling laws between the peak proton flux and fluence of Solar Energetic Particle…

Solar and Stellar Astrophysics · Physics 2024-10-02 Athanasios Papaioannou , Konstantin Herbst , Tobias Ramm , David Lario , Astrid M. Veronig

Aims The possible influence of solar superflares on the near-Earth space radiation environment are assessed through the investigation of scaling laws between the peak proton flux and fluence of Solar Energetic Particle (SEP) events with the…

Solar and Stellar Astrophysics · Physics 2023-03-08 Athanasios Papaioannou , Konstantin Herbst , Tobias Ramm , Edward W. Cliver , David Lario , Astrid M. Veronig

Solar energetic particle (SEP) events are one of the most crucial aspects of space weather. Their prediction depends on various factors including the source solar eruptions such as flares and coronal mass ejections (CMEs). The Geostationary…

Solar and Stellar Astrophysics · Physics 2023-08-16 Sumanth A. Rotti , Petrus C. Martens

Solar energetic particles (SEPs) are an important space radiation source, especially for the space weather environment in the inner heliosphere. The energy spectrum of SEP events is crucial both for evaluating their radiation effects and…

Solar and Stellar Astrophysics · Physics 2024-10-18 Yubao Wang , Jingnan Guo

Solar energetic particle (SEP) events are associated with coronal mass ejections (CMEs) and/or solar flares. SEPs travel through the corona and interplanetary space to reach Earth, posing a radiation hazard to spacecraft and astronauts…

Solar and Stellar Astrophysics · Physics 2024-11-07 Lei Cheng , Ming Zhang , Ryun Young Kwon , David Lario

The forecasting of solar energetic particles (SEPs) is a prominent area of space weather research. Numerous forecasting models exist that predict SEP event properties at proton energies <100MeV. One of these models is the SPARX system, a…

Solar and Stellar Astrophysics · Physics 2023-07-12 Charlotte O. G. Waterfall , Silvia Dalla , Mike S. Marsh , Timo Laitinen , Adam Hutchinson

The capability to predict the parameters of an SEP event such as its onset, peak flux, and duration is critical to assessing any potential space weather impact. We present a new flexible modelling system simulating the propagation of Solar…

Solar and Stellar Astrophysics · Physics 2015-06-01 M. S. Marsh , S. Dalla , M. Dierckxsens , T. Laitinen , N. B. Crosby

The Energetic Particle Radiation Environment Model (EPREM) solves the focused transport equation (FTE) on a Lagrangian grid in a frame co-moving with the solar wind plasma and simulates the acceleration and transport of solar energetic…

Solar and Stellar Astrophysics · Physics 2026-03-18 Matthew A. Young , Bala Poduval

3He-rich solar energetic particles (SEPs) are believed to be accelerated in solar flares or jets by a mechanism that depends on the ion charge-to-mass (Q/M) ratio. It implies that the flare plasma characteristics (e.g., temperature) may be…

Solar and Stellar Astrophysics · Physics 2021-03-10 R. Bucik , S. M. Mulay , G. M. Mason , N. V. Nitta , M. I. Desai , M. A. Dayeh

The Probabilistic Solar Particle Event foRecasting (PROSPER) model predicts the probability of occurrence and the expected peak flux of Solar Energetic Particle (SEP) events. Predictions are derived for a set of integral proton energies…

Solar proton events (SPEs) pose radiation hazards, disrupt technology, and impact operations on Earth and in space, making continuous monitoring essential. We compare 10-50 MeV proton flux measurements from SOHO/EPHIN at Lagrange Point 1…

Solar and Stellar Astrophysics · Physics 2025-11-10 Aatiya Ali , Viacheslav Sadykov

Solar energetic particle (SEP) events have been observed by the Parker Solar Probe (PSP) spacecraft since its launch in 2018. These events include sources from solar flares and coronal mass ejections (CMEs). Onboard PSP is the IS\(\odot\)IS…

Positioned at geostationary orbit (GEO) ~36,000 km above Earth, NOAA's GOES series has recorded real-time energetic proton flux measurements crucial for space weather monitoring for over three decades. Although machine learning models have…

Solar and Stellar Astrophysics · Physics 2025-11-12 Aatiya Ali , Viacheslav Sadykov

The SPEARHEAD (specification, analysis, and re-calibration of high-energy particle data) project, funded by the European Union Horizon Europe programme, enhances the accuracy and usability of high-energy particle measurements. It…

Large solar eruptive events, including solar flares and coronal mass ejections (CMEs), can lead to solar energetic particle (SEP) events. During these events, protons are accelerated up to several GeV and pose numerous space weather risks.…

Solar and Stellar Astrophysics · Physics 2023-03-08 Charlotte Waterfall , Silvia Dalla , Osku Raukunen , Daniel Heynderickx , Piers Jiggens , Rami Vainio

The Sun is an effective particle accelerator producing solar energetic particle (SEP) events during which particles up to several GeVs can be observed. Those events observed at Earth with the neutron monitor network are called ground level…

Space Physics · Physics 2016-12-21 Patrick Kühl , Nina Dresing , Bernd Heber , Andreas Klassen
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