A5080128807- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Solar Radiation and Photovoltaics
- Radiation Therapy and Dosimetry
- Spacecraft Design and Technology
- Gamma-ray bursts and supernovae
- Earthquake Detection and Analysis
- Stellar, planetary, and galactic studies
- Atmospheric Ozone and Climate
- Geomagnetism and Paleomagnetism Studies
- Space exploration and regulation
- Distributed and Parallel Computing Systems
- Space Satellite Systems and Control
- Radiation Effects in Electronics
- CCD and CMOS Imaging Sensors
- Nuclear Physics and Applications
- Planetary Science and Exploration
- Meteorological Phenomena and Simulations
- Risk and Safety Analysis
- Spaceflight effects on biology
- Energy Load and Power Forecasting
- Nuclear Issues and Defense
- Radiation Detection and Scintillator Technologies
- Photovoltaic System Optimization Techniques
European Space Research and Technology Centre
2015-2024
European Space Agency
2020-2021
University of Southampton
2009
A new catalogue of 314 solar energetic particle (SEP) events extending over a large time span from 1984 to 2013 has been compiled. The properties as well the associations these SEP with their parent sources have thoroughly examined. include proton peak integral flux and fluence for energies above 10, 30, 60 100 MeV. associated were parametrized by flare (SF) coronal mass ejection (CME) characteristics, related radio emissions. In particular, SFs: soft X-ray (SXR) flux, SXR fluence,...
Context. Solar observatories are providing the world-wide community with a wealth of data, covering wide time ranges (e.g. and Heliospheric Observatory, SOHO), multiple viewpoints (Solar TErrestrial RElations STEREO), returning large amounts data Dynamics SDO). In particular, volume SDO presents challenges; available only from few repositories, full-disk, full-cadence for reasonable durations scientific interest difficult to download, due their size download rates most users. From...
Solar Energetic Particle (SEP) events are interesting from a scientific perspective as they the product of broad set physical processes corona out through extent heliosphere, and provide insight into particle acceleration transport that widely applicable in astrophysics. From operations perspective, SEP pose radiation hazard for aviation, electronics space, human space exploration, particular missions outside Earth's protective magnetosphere including to Moon Mars. Thus, it is critical...
Solar energetic particles (SEPs) constitute an important component of the radiation environment in interplanetary space. Accurate modeling SEP events is crucial for mitigation hazards spacecraft design. In this study we present two new statistical models high energy solar proton fluences based on ground level enhancement (GLE) observations during cycles 19–24. As basis our modeling, utilize a four parameter double power law function (known as Band function) fits to integral GLE fluence...
Abstract Solar proton flux measurements onboard Geostationary Operational Environmental Satellites (GOES) are of great importance as they cover several solar cycles, increasingly contributing to the development long‐term models and operational purposes such now‐casting forecasting space weather. A novel approach for cross calibration GOES detectors is developed using reference energetic NASA IMP‐8 Goddard Medium Energy Experiment (GME). The spurious behavior in a part IMP‐8/GME reduced...
Solar energetic particle (SEP) events are a serious radiation hazard for spacecraft as well severe health risk to humans traveling in space.Indeed, accurate modeling of the SEP environment constitutes priority requirement astrophysics and solar system missions human exploration space.The European Space Agency's Energetic Particle Environment Modelling (SEPEM) application server is World Wide Web interface complete set cross-calibrated data ranging from 1973 2013 new engineering models...
The Solar Accumulated and Peak Proton Heavy Ion Radiation Environment (SAPPHIRE) model provides environment specification outputs for all aspects of the Energetic Particle (SEP) environment. is based upon a thoroughly cleaned carefully processed data set. Herein evolution solar proton discussed with comparisons to other models data. This paper discusses construction underlying set, modelling methodology, optimisation fitted flux distributions extrapolation cover range energies from 0.1 MeV 1...
The prediction of the occurrence Solar Energetic Particle (SEP) events has been investigated over many years, and multiple works have presented significant advances in this problem. accurate timely SEPs is interest to scientific community as well mission designers, operators, industrial partners due threat pose satellites, spacecrafts, crewed missions. In work, we present a methodology for from soft X-rays solar flares associated with that were measured 1 AU. We use an expansive dataset...
Large solar eruptive events, including flares and coronal mass ejections (CMEs), can lead to energetic particle (SEP) events. During these protons are accelerated up several GeV pose numerous space weather risks. These risks include, but not limited to, radiation hazards astronauts disruption satellites electronics. The highest energy SEPs capable of reaching Earth on timescales minutes be detected in ground level enhancements (GLEs). Understanding analyzing events is critical future...
As part of the ESA Testbed for Radiation and Plasma Planetary Environments (TRAPPED) project, we present first empirical-based specification model Saturn’s plasma environment based on analysis all publicly available moment datasets derived using multiple techniques from Cassini observations made by Spectrometer (CAPS) Radio Wave Science (RPWS) instrument covering entire 13-year mission.We investigate variability spatio-temporal dynamics moments with respect to various magnetic...
Missions are being studied to the systems of outer planets, including extended observation periods by local orbiters or possible landers, that require careful evaluation radiation and plasma environment for design both platform science payload. Radiation impact potentially includes total cumulative doses, single event effects from short term enhancements internal charging risk whilst environments present risks surface charging.Under ESA Project TRAPPED (Testbed Plasma Planetary...
Abstract Solar energetic particles are one of the main sources particle radiation seen in space. In first part September 2017 most active solar period cycle 24 produced four large X‐class flares and a series (interplanetary) coronal mass ejections, which gave rise to storms over all energies at ground by neutron monitors. This paper presents comprehensive cross comparisons situ detector data from near‐Earth satellites give an appraisal on state present processing for monitors such particles....
Abstract The derivation of integral fluxes from instrument coincidence rates requires accurate knowledge their effective energies. Recent cross calibrations GOES with the high‐energy‐resolution Interplanetary Monitoring Platform (IMP) 8 Goddard Medium Energy Experiment (GME) (Sandberg et al., Geophys . Res Lett , 41 4435, 2014a) gave significantly lower energies than those currently used by NOAA Space Weather Prediction Center to calculate solar proton rates. This implies systematically...
The solar energetic particle (SEP) radiation environment is an important consideration for spacecraft design, mission planning and human spaceflight. Herein presented investigation into the likely severity of effects a very large Solar Particle Event (SPE) on technology humans in space. Fluences SPEs derived using statistical models are compared to historical verify their appropriateness use analysis which follows. By combining tools with model behind varying layers shielding it possible...
A new modeling methodology for the prediction of solar proton environment a 1 AU developed as part Solar Energetic Particle Environment (SEPEM) Project European Space Agency (ESA) is presented. This method named Virtual Timelines applied to SEPEM Reference Event List derived from long flux time series space-based measurements produce model peak and fluence at AU. There are several components including use Lévy distribution distributions accounting non-point-like nature SEP events.
Solar Energetic Particles (SEPs) result from intense solar eruptive events such as flares and coronal mass ejections (CMEs) pose a significant threat for both personnel infrastructure in space conditions. In this work, we present FORSPEF (Forecasting Particle Events Flares), novel dual system, designed to perform forecasting of SEPs based on flares, well independent SEP nowcasting. An overview flare methods choice is presented. Concerning events, make use the first time newly re-calibrated...
A web-based prototype system for predicting solar energetic particle (SEP) events and flares use by space launch operators is presented. The has been developed as a result of the European Space Agency (ESA) project SEPsFLAREs (Solar Events Prediction For LAunch Risk Estimation). consists several modules covering prediction early SEP Warnings (labeled Warning tool), event occurrence onset, peak duration. In addition, acquires data flare nowcasting from Global Navigation Satellite Systems...
The Probabilistic Solar Particle Event foRecasting (PROSPER) model predicts the probability of occurrence and expected peak flux solar energetic particle (SEP) events. Predictions are derived for a set integral proton energies (i.e., E > 10, 30, 100 MeV) from characteristics flares (longitude, magnitude), coronal mass ejections (width, speed), combinations both. Herein PROSPER methodology deriving SEP event forecasts is described, validation model, based on archived data, presented case...
A new probabilistic model aiming to cover all aspects of the solar energetic particle (SEP) environment required for mission specifications is presented; accumulated and peak proton heavy ion radiation model. This includes an updated reference data set upon which analysis based, a thorough evaluation fitting procedures SEP fluxes, helium not based on extension heavier ions Advanced Composition Explorer/solar isotope spectrometer set, careful extrapolation output spectra energies from 0.1...
Solar energetic particles (SEPs) pose a serious radiation hazard to spacecraft and astronauts. The highest energy SEPs are significant threat even in heavily shielded applications. We present new probabilistic model of very high differential peak proton fluxes. is based on GOES/HEPAD observations between 1986 2018, i.e., covering nearly three complete solar cycles. SEP event list for the was defined using statistical criterion derived by setting possibility false detection an 1%. flux...