The relationship between energetic particles and flare properties for impulsive solar flares

1990 ◽  
Vol 73 ◽  
pp. 253 ◽  
Author(s):  
H. V. Cane ◽  
D. V. Reames
Keyword(s):  
Solar Flares ◽  
Energetic Particles ◽  
The Relationship

A Source of Energetic Particles Associated with Solar Flares

2001 ◽  
Vol 547 (2) ◽  
pp. 1159-1166 ◽  
Author(s):  
X. Y. Wang ◽  
C. S. Wu ◽  
S. Wang ◽  
J. K. Chao ◽  
Y. Lin ◽  
...  
Keyword(s):  
Solar Flares ◽  
Energetic Particles

SIMULATIONS OF LATERAL TRANSPORT AND DROPOUT STRUCTURE OF ENERGETIC PARTICLES FROM IMPULSIVE SOLAR FLARES

2016 ◽  
Vol 831 (2) ◽  
pp. 195 ◽  
Author(s):  
P. Tooprakai ◽  
A. Seripienlert ◽  
D. Ruffolo ◽  
P. Chuychai ◽  
W. H. Matthaeus
Keyword(s):  
Solar Flares ◽  
Energetic Particles ◽  
Lateral Transport

scholarly journals Descriptive study of X-class flares released in the year 2014, during the double peak of SC-24

2015 ◽  
Vol 11 (S320) ◽  
pp. 330-332
Author(s):  
Ahmed A. Hady ◽  
Marwa H. Mostafa ◽  
Susan W. Samwel
Keyword(s):  
Data Analysis ◽  
Solar Cycle ◽  
Solar Flares ◽  
Descriptive Study ◽  
Energetic Particles ◽  
Main Peak ◽  
Solar Cycles ◽  
Double Peak ◽  
Solar Cycle 24 ◽  
Cycle 24

AbstractDuring the declining phase of the Solar cycle 24, a new peak appeared on January 7, 2014. The release of x-class flares, with the high energetic particles, were found to be more intense than that occurred during the main peak of the same cycle. Few X-class flares were released, lately, during the year 2014. We note that during the last 5 solar cycles, a new peak has appeared, releasing high energetic particles and X-class solar flares, which are called the secondary peak or the double peak of solar cycle. The aim of this descriptive study is to follow the morphological and magnetic changes of the active region before, during, and after the production of X-class flares according to data analysis. Furthermore, the causes of the release of such eruptive storms have been discussed for the period, year 2014, during the double peak of the solar cycle 24.

scholarly journals Modified data on geoeffective solar flares and seismic noise variations

2021 ◽  
Vol 929 (1) ◽  
pp. 012033
Author(s):  
N A Sycheva ◽  
L M Bogomolov
Keyword(s):  
Standard Deviation ◽  
Solar Flare ◽  
Solar Flares ◽  
Seismic Noise ◽  
Tien Shan ◽  
Output Data ◽  
Regional Seismicity ◽  
Eruptive Event ◽  
The Relationship ◽  
Northern Tien Shan

Abstract The problem of the relationship between strong magnetic swarms caused by solar flares and variations in seismicity is considered. The data on the temporal dependences of the parameters of seismic noise (average level, and standard deviation, RMS) recorded by the stations of the KNET seismic network have been used as the output data of monitoring the territory of the Bishkek geodynamic proving ground (Northern Tien Shan). The signatures of the influence of a magnetic swarm that occurred after an ultra-strong solar flare on September 6, 2017 have been established. The results obtained on the increase in seismic noise after this super-strong eruptive event are consistent with the results of studies on the influence of magnetic swarms on changes in regional seismicity.

scholarly journals Sources of solar energetic particles

2019 ◽  
Vol 377 (2148) ◽  
pp. 20180095 ◽  
Author(s):  
Loukas Vlahos ◽  
Anastasios Anastasiadis ◽  
Athanasios Papaioannou ◽  
Athanasios Kouloumvakos ◽  
Heinz Isliker
Keyword(s):  
Solar Corona ◽  
Space Weather ◽  
Solar Flares ◽  
Large Scale ◽  
Energetic Particles ◽  
Solar Energetic Particles ◽  
Plasma Parameters ◽  
Current Sheets ◽  
Solar Eruptions ◽  
Magnetohydrodynamic Simulations

Solar energetic particles are an integral part of the physical processes related with space weather. We present a review for the acceleration mechanisms related to the explosive phenomena (flares and/or coronal mass ejections, CMEs) inside the solar corona. For more than 40 years, the main two-dimensional cartoon representing our understanding of the explosive phenomena inside the solar corona remained almost unchanged. The acceleration mechanisms related to solar flares and CMEs also remained unchanged and were part of the same cartoon. In this review, we revise the standard cartoon and present evidence from recent global magnetohydrodynamic simulations that support the argument that explosive phenomena will lead to the spontaneous formation of current sheets in different parts of the erupting magnetic structure. The evolution of the large-scale current sheets and their fragmentation will lead to strong turbulence and turbulent reconnection during solar flares and turbulent shocks. In other words, the acceleration mechanism in flares and CME-driven shocks may be the same, and their difference will be the overall magnetic topology, the ambient plasma parameters, and the duration of the unstable driver. This article is part of the theme issue ‘Solar eruptions and their space weather impact’.

Energetic Particles in the Inner Heliosphere: Solar Orbiter

2020 ◽  
Author(s):  
Robert F. Wimmer-Schweingruber ◽  
Javier Rodriguez-Pacheco ◽  
Stephan Böttcher ◽  
Ignacio Cernuda ◽  
Nina Dresing ◽  
...  
Keyword(s):  
Solar Flares ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Energetic Particles ◽  
Angle Distribution ◽  
Seed Particles ◽  
Transport Effects ◽  
Singly Charged ◽  
Magnetospheric Boundaries ◽  
Accelerated Particles

<p>To be measured as energetic particles in the heliosphere ions and electrons must undergo three processes: injection, acceleration, and transport. Suprathermal seed particles have speeds well above the fast magnetosonic speed in the solar wind frame of reference and can vary from location to location and within the solar activity cycle. Acceleration sites include reconnecting current sheets in solar flares or magnetospheric boundaries, shocks in the solar corona, heliosphere and a planetary obstacles, as well as planetary magnetospheres. Once accelerated, particles are transported from the acceleration site into and throughout the heliosphere. Thus, by investigating properties of energetic particles such as their composition, energy spectra, pitch-angle distribution, etc. one can attempt to distinguish their origin or injection and acceleration site. This in turn allows us to better understand transport effects whose underlying microphysics is also a key ingredient in the acceleration of particles.</p><p>In this presentation we will present some clear examples which link energetic particles from their observing site to their source locations. These include Jupiter electrons, singly-charged He ions from CIRs, and 3He from solar flares. We will compare these examples with the measurement capabilities of the Energetic Particle Detector (EPD) on Solar Orbiter and consider implications for the key science goal of Solar Orbiter and Solar Proble Plus – How the Sun creates and controls the heliosphere.</p>

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