Results 21 to 30 of about 77,381 (298)

Effects of interplanetary transport on derived energetic particle source strengths [PDF]

open access: yes, 2010
We study the transport of solar energetic particles (SEPs) in the inner heliosphere in order to relate observations made by an observer at 1 AU to the number and total energy content of accelerated particles at the source, assumed to be near the Sun.
Chollet, E. E.   +2 more
core   +1 more source

Yield Function of the DOSimetry TELescope Count and Dose Rates Aboard the International Space Station

open access: yesSpace Weather, 2021
The Earth is constantly hit by energetic particles originating from galactic sources. The flux of these particles is altered by the magnetized solar wind in the heliosphere and the Earth's magnetic field.
A. S. Caprotti   +4 more
doaj   +1 more source

Acceleration of solar wind particles by traveling interplanetary shocks [PDF]

open access: yes, 2019
The acceleration of thermal solar wind protons at spherical interplanetary shocks driven by coronal mass ejections is investigated. The solar wind velocity distribution is represented using $\kappa$-functions, which are transformed in response to ...
Prinsloo, P. L.   +2 more
core   +3 more sources

Solar Energetic Particle Track-production Rates at 1 au: Comparing In Situ Particle Fluxes with Lunar Sample-derived Track Densities

open access: yesThe Astrophysical Journal Letters, 2023
Heavy ( Z > 26) solar energetic particles (SEPs) with energies ∼1 MeV nucleon ^−1 are known to leave visible damage tracks in meteoritic materials. The density of such “solar flare tracks” in lunar and asteroidal samples has been used as a measure of a ...
A. R. Poppe   +4 more
doaj   +1 more source

Experimental Observation Of Energetic Ions Accelerated By Three-Dimensional Magnetic Reconnection In A Laboratory Plasma [PDF]

open access: yes, 2002
Magnetic reconnection is widely believed responsible for heating the solar corona as well as for generating X-rays and energetic particles in solar flares. On astrophysical scales, reconnection in the intergalactic plasma is a prime candidate for a local
Brown, Michael R.   +4 more
core   +3 more sources

Space Climate and Solar Energetic Particles [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics
In this paper, we investigate the effect of solar corona magnetic activities during 11-year periods and energetic particles on global warming. According to atmospheric changes during the past years, the relationship between these two issues should be ...
Ehsan Tavabi   +2 more
doaj   +1 more source

THE EFFECT OF TURBULENCE INTERMITTENCE ON THE EMISSION OF SOLAR ENERGETIC PARTICLES BY CORONAL AND INTERPLANETARY SHOCKS [PDF]

open access: yes
Major solar energetic particle events are associated with shock waves in solar corona and solar wind. Fast scattering of charged particles by plasma turbulence near the shock wave increases the efficiency of the particle acceleration in the shock, but ...
Kocharov, Leon   +2 more
core   +1 more source

Solar Cycle Variation of 0.3–1.29 MeV Nucleon−1 Heavy Ion Composition During Quiet Times Near 1 au in Solar Cycles 23 and 24

open access: yesThe Astrophysical Journal, 2023
We report on the annual variation of quiet-time suprathermal ion composition for C through Fe using Advanced Composition Explorer (ACE)/Ultra-Low Energy Isotope Spectrometer data over the energy range 0.3–1.28 MeV nuc ^−1 from 1998 through 2019, covering
B. L. Alterman   +4 more
doaj   +1 more source

Simulated Energetic Particle Transport in the Interplanetary Space: The Palmer Consensus Revisited

open access: yes, 2013
Reproducing measurements of the scattering mean free paths for energetic particles propagating through the solar system has been a major problem in space physics. The pioneering work of Bieber et al. [Astrophys. J. 420, 294 (1994)] provided a theoretical
Shalchi, A., Tautz, R. C.
core   +1 more source

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

open access: yes, 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

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