scholarly journals INCREASES IN SCR ENERGETIC PROTON FLUXES ON EARTH AND THEIR RELATION TO SOLAR SOURCES

2020 ◽  
Vol 6 (4) ◽  
pp. 40-43
Author(s):  
Leonid Lazutin
Keyword(s):  
Solar Flare ◽  
Solar Proton ◽  
Maximum Energy ◽  
Solar Cosmic Rays ◽  
Proton Acceleration ◽  
Flux Intensity ◽  
Solar Perturbations ◽  
No Scr ◽  
Galactic Background ◽  
Accelerated Particles

Logachev catalog data for solar cycle 23 has been used to study the dependence of measured increases in solar cosmic rays (SCRs) on solar perturbations. The efficiency of recording the SCR increases, driven by proton acceleration in the corona, on Earth and in its vicinity is shown to depend on power of a solar flare that created a shock wave and on position of the flare on the solar disk. As the particle flux moves along the heliolongitude away from the parent flare, the acceleration efficiency decreases, i.e. the maximum energy of the accelerated particles and their intensity at equal energy decrease. As a result, at a certain distance along a heliolongitude from the parent solar flare, the solar proton flux intensity decreases to the galactic background, and there is no SCR increase detected.

scholarly journals INCREASES IN SCR ENERGETIC PROTON FLUXES ON EARTH AND THEIR RELATION TO SOLAR SOURCES

2020 ◽  
Vol 6 (4) ◽  
pp. 46-50
Author(s):  
Leonid Lazutin
Keyword(s):  
Solar Flare ◽  
Solar Proton ◽  
Maximum Energy ◽  
Solar Cosmic Rays ◽  
Proton Acceleration ◽  
Flux Intensity ◽  
Solar Perturbations ◽  
No Scr ◽  
Galactic Background ◽  
Accelerated Particles

Logachev catalog data for solar cycle 23 has been used to study the dependence of measured increases in solar cosmic rays (SCRs) on solar perturbations. The efficiency of recording the SCR increases, driven by proton acceleration in the corona, on Earth and in its vicinity is shown to depend on power of a solar flare that created a shock wave and on position of the flare on the solar disk. As the particle flux moves along the heliolongitude away from the parent flare, the acceleration efficiency decreases, i.e. the maximum energy of the accelerated particles and their intensity at equal energy decrease. As a result, at a certain distance along a heliolongitude from the parent solar flare, the solar proton flux intensity decreases to the galactic background, and there is no SCR increase detected.

ASTROPHYSICAL ASPECTS IN THE STUDIES OF SOLAR COSMIC RAYS

2008 ◽  
Vol 23 (01) ◽  
pp. 1-141 ◽  
Author(s):  
L. I. MIROSHNICHENKO ◽  
J. A. PEREZ-PERAZA
Keyword(s):  
Cosmic Rays ◽  
High Energy ◽  
Solar Proton ◽  
Maximum Energy ◽  
The Sun ◽  
Solar Cosmic Rays ◽  
Frequency Distributions ◽  
Research Fields ◽  
Stellar Flares ◽  
Energy Processes

This review paper comprises main concepts, available observational data and recent theoretical results related to astrophysical aspects of particle acceleration at/near the Sun and extreme capacities of the solar accelerator(s). We summarize underground and ground-based observations of solar cosmic rays (SCR) accumulated since 1942, direct spacecraft measurements of solar energetic particles (SEP) near the Earth's orbit, indirect information on the SCR variations in the past, and other relevant astrophysical, solar and geophysical data. The list of the problems under discussion includes: upper limit spectrum (ULS) for solar cosmic rays; maximum energy (rigidity), Em(Rm), of particles accelerated at/near the Sun; production of the flare neutrinos; energetics of SCR and solar flares; production of flare neutrons and gamma rays; charge states and elemental abundances of accelerated solar ions; coronal mass ejections (CME's) and extended coronal structures in acceleration models; magnetic reconnection in acceleration scenarios; size (frequency) distributions of solar proton events (SPE) and stellar flares; occurrence probability of giant flares; archaeology of solar cosmic rays. The discussion allows us to outline a series of interesting conceptual and physical associations of SCR generation with the high-energy processes at other stars. The most reliable estimates of various parameters are given in each of research fields mentioned above; a set of promising lines of future studies is highlighted. A great importance of SCR data for resolving some general astrophysical problems is emphasized.

scholarly journals A MODEL FOR THE ESCAPE OF SOLAR-FLARE-ACCELERATED PARTICLES

2013 ◽  
Vol 771 (2) ◽  
pp. 82 ◽  
Author(s):  
S. Masson ◽  
S. K. Antiochos ◽  
C. R. DeVore
Keyword(s):  
Solar Flare ◽  
Accelerated Particles

scholarly journals THE MAXIMUM ENERGY OF ACCELERATED PARTICLES IN RELATIVISTIC COLLISIONLESS SHOCKS

2013 ◽  
Vol 771 (1) ◽  
pp. 54 ◽  
Author(s):  
Lorenzo Sironi ◽  
Anatoly Spitkovsky ◽  
Jonathan Arons
Keyword(s):  
Maximum Energy ◽  
Collisionless Shocks ◽  
Accelerated Particles

Time Structure of Solar Flare Proton Events

1968 ◽  
Vol 1 (4) ◽  
pp. 148-149
Author(s):  
B. J. Stone
Keyword(s):  
Solar Flare ◽  
Interplanetary Space ◽  
Cosmic Ray ◽  
Solar Proton ◽  
Progress Report ◽  
Flare Activity ◽  
Space Probe ◽  
Short Term ◽  
The Earth ◽  
The Times

This paper is a progress report on an examination of the short-term variability of solar proton flux in interplanetary space at times of solar flare activity. The data are from the GRCSW cosmic-ray detector on board the Pioneer 7 space probe, which, at the times to be discussed, was more than a million miles from the Earth.

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