Results 21 to 30 of about 76,343 (291)

Ulysses COSPIN observations of cosmic rays and solar energetic particles from the South Pole to the North Pole of the Sun during solar maximum [PDF]

Annales Geophysicae, 2003
In 2000–2001 Ulysses passed from the south to the north polar regions of the Sun in the inner heliosphere, providing a snapshot of the latitudinal structure of cosmic ray modulation and solar energetic particle populations during a period near ...
R. B. McKibben, J. J. Connell, C. Lopate, M. Zhang, J. D. Anglin, A. Balogh, S. Dalla, T. R. Sanderson, R. G. Marsden, M. Y. Hofer, H. Kunow, A. Posner, B. Heber   +12 more
doaj   +1 more source

New views of solar energetic particles from the Advanced Composition Explorer [PDF]

, 2000
Since its launch in August 1997, the Advanced Composition Explorer has been measuring the elemental, isotopic, and ionic charge-state composition of solar energetic particles with three new, high-resolution instruments (SEPICA, SIS, and ULEIS).
Mewaldt, R. A.
core   +1 more source

Solar Energetic Particle “Ground-Level Enhancements” and the Solar Cycle [PDF]

Solar Physics, 2022
Abstract Severe geomagnetic storms appear to be ordered by the solar cycle in a number of ways: They occur more frequently close to solar maximum and declining phase, are more common in larger solar cycles and show different patterns of occurrence in odd-and even-numbered solar cycles.
Mathew J. Owens, Luke A. Barnard, Benjamin J. S. Pope, Mike Lockwood, Ilya Usoskin, Eleanna Asvestari   +5 more
openaire   +4 more sources

A New Look at Neon-C and SEP-Neon [PDF]

, 2001
Studies of the isotopic composition of neon in lunar soils, meteorites, and interplanetary dust particles have revealed several distinct components. In addition to implanted solar wind, which has a ^(20)Ne/^(22)Ne-abundance ratio of 13.7, there is an ...
Gloeckler, G., Mason, G. M., Mewaldt, R. A., Ogliore, R. C.   +3 more
core   +1 more source

Transport of Solar Energetic Particles [PDF]

International Astronomical Union Colloquium, 1994
AbstractNew developments in the understanding of the interplanetary transport of solar cosmic rays are reviewed. Based on carefully analyzed solar particle events observed on the Helios and ISEE 3 spacecraft, the relation of transport parameters to the structure of the interplanetary magnetic field is discussed.
openaire   +1 more source

GCR access to the Moon as measured by the CRaTER instrument on LRO [PDF]

, 2010
[1] Recent modeling efforts have yielded varying and conflicting results regarding the possibility that Earth\u27s magnetosphere is able to shield energetic particles of \u3e10 MeV at lunar distances.
Blake, J. B., Case, A. W., Golightly, M. J., Kasper, J. C., Mazur, J. E., Spence, Harlan E., Townsend, L. W., Zeitlin, C. J.   +7 more
core   +2 more sources

Energy Spectrum of Solar Energetic Electron Events over 25 Years

The Astrophysical Journal, 2023
We investigate the peak flux energy spectrum of 458 solar energetic electron (SEE) events with a clear velocity dispersion detected at energies from ≤4.2 to ≥108 keV by Wind/3DP from 1994 December through 2019 December, utilizing a pan-spectrum fitting ...
Wen Wang, Linghua Wang, Säm Krucker, Robert F. Wimmer-Schweingruber   +3 more
doaj   +1 more source

Synthesis of 3-D coronal-solar wind energetic particle acceleration modules [PDF]

, 2014
1. Introduction Acute space radiation hazards pose one of the most serious risks to future human and robotic exploration. Large solar energetic particle (SEP) events are dangerous to astronauts and equipment.
Chandran, Benjamin D.G., Cooper, J. F., Desai, M., Downs, Cooper, Germaschewski, Kai K., Giacalone, Joe, Gorby, Matthew J., Isenberg, Philip A., Kasper, J. C., Korreck, K. E., Kozarev, K., Lee, Martin A., Linker, J. A., Lionello, Roberto, Lugaz, Noe E., MacNeice, Peter, Mikic, Z., Riley, P., Schwadron, Nathan A., Smith, Sonya S., Spence, Harlan E., Stevens, M. L., Torak, Tibor   +22 more
core   +2 more sources

The Isotopic Composition of Solar Energetic Particles [PDF]

, 2000
Since the launch of ACE in August 1997, the Solar Isotope Spectrometer (SIS) has observed 11 large solar particle events in which elemental and isotopic composition was determined over a large energy range. The composition of these events has raised many
Christian, E. R., Cohen, C. M. S., Cummings, A. C., Leske, R. A., Mewaldt, R. A., Slocum, P. L., Stone, E. C., von Rosenvinge, T. T., Wiedenbeck, M. E.   +8 more
core   +1 more source

A Living Catalog of Parker Solar Probe IS⊙IS Energetic Particle Enhancements

The Astrophysical Journal Supplement Series, 2023
Energetic charged particles are pervasive throughout the heliosphere with contributions from solar energetic particle events, stream and corotating interaction regions, galactic cosmic rays, anomalous cosmic rays, and suprathermal ions.
J. G. Mitchell, C. M. S. Cohen, T. J. Eddy, C. J. Joyce, J. S. Rankin, M. M. Shen, G. A. de Nolfo, E. R. Christian, D. J. McComas, R. L. McNutt Jr., M. E. Wiedenbeck, N. A. Schwadron, M. E. Hill, A. W. Labrador, R. A. Leske, R. A. Mewaldt, D. G. Mitchell, J. R. Szalay   +17 more
doaj   +1 more source