Solar energetic particle event onset as analyzed from simulated data
نویسندگان
چکیده
منابع مشابه
Onset Study of Impulsive Solar Energetic Particle Events
Impulsive solar energetic particle (SEP) events are associated with impulsive X-ray flares, energetic electrons, and enhanced heavy ion abundances. Using instruments on ACE, we have examined the composition and origin of twelve impulsive SEP events from November 1997 to June 2000. have enhanced ‘HerHe ratios compared with the solar wind values. All selected impulsive SEP events The range of ‘He...
متن کاملCarrington Flare of 1859 as a Prototypical Worst-Case Solar Energetic Particle Event
Recent analyses of ice core samples indicate that the Carrington flare of 1859 was the largest event observed in the past 500 years. These ice core data yield estimates of the proton fluence for energies greater than 30 MeV, but provide no other spectrum information. Assuming that the proton energy distribution for such an event is similar to that measured for other recent, large events, total ...
متن کاملSh 5.1-5 Isotope Abundances of Solar Coronal Material Derived from Solar Energetic Particle Measurements
Coronal isotopic abundances for the elements He, C, N, 0, Ne, and Mg are derived from previously published measurements of solar energetic particles by first measuring, and then correcting for the charge-to-mass-dependent fractionation due to solar flare acceleration and propagation processes. The resulting coronal composition generally agrees with that of other samples of solar system material...
متن کاملMagnetic field models from energetic particle data at Neptune
The locations of features in the Voyager 2 energetic particle data from Neptune are combined with uncertainties n the multipole expansion f the planetary magnetic field to derive new magnetic field models that are consistent both with various interpretations of the particle features and with the magnetic field data. While assumptions as to the origin of the features must be made, they do not pr...
متن کاملAcute effects of solar particle event radiation
A major solar particle event (SPE) may place astronauts at significant risk for the acute radiation syndrome (ARS), which may be exacerbated when combined with other space flight stressors, such that the mission or crew health may be compromised. The National Space Biomedical Research Institute (NSBRI) Center of Acute Radiation Research (CARR) is focused on the assessment of risks of adverse bi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20034247