High-Energy Particle Production in Solar Flares (SEP, Gamma-Ray and Neutron Emissions)

1987 ◽  
Vol T18 ◽  
pp. 5-19 ◽  
Author(s):  
E L Chupp
Keyword(s):  
Solar Flares ◽  
Particle Production ◽  
Gamma Ray ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle

scholarly journals High-Energy Multimessenger Transient Astrophysics

2019 ◽  
Vol 69 (1) ◽  
pp. 477-506 ◽  
Author(s):  
Kohta Murase ◽  
Imre Bartos
Keyword(s):  
Time Domain ◽  
Particle Production ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Transient Phenomena ◽  
New Era ◽  
Astrophysical Objects ◽  
High Energy Emission

The recent discoveries of high-energy cosmic neutrinos and gravitational waves from astrophysical objects have led to a new era of multimessenger astrophysics. In particular, electromagnetic follow-up observations triggered by these cosmic signals have proved to be highly successful and have brought about new opportunities in time-domain astronomy. We review high-energy particle production in various classes of astrophysical transient phenomena related to black holes and neutron stars, and discuss how high-energy emission can be used to reveal the underlying physics of neutrino and gravitational-wave sources.

Ion Heating and High-Energy-Particle Production by Ion-Cyclotron Heating in the Large Helical Device

2000 ◽  
Vol 85 (21) ◽  
pp. 4530-4533 ◽  
Author(s):  
T. Mutoh ◽  
R. Kumazawa ◽  
T. Seki ◽  
T. Watari ◽  
K. Saito ◽  
...  
Keyword(s):  
Particle Production ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Ion Heating ◽  
Ion Cyclotron

Ion cyclotron range of frequencies heating and high-energy particle production in the Large Helical Device

2003 ◽  
Vol 43 (8) ◽  
pp. 738-743 ◽  
Author(s):  
T Mutoh ◽  
R Kumazawa ◽  
T Seki ◽  
K Saito ◽  
T Watari ◽  
...  
Keyword(s):  
Particle Production ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Ion Cyclotron

scholarly journals Magnetic fractures or reconnection of type II

2010 ◽  
Vol 6 (S274) ◽  
pp. 56-61
Author(s):  
Gerhard Haerendel
Keyword(s):  
Particle Production ◽  
Gamma Ray ◽  
Magnetic Energy ◽  
High Energy ◽  
Compact Objects ◽  
High Energy Particle ◽  
Shear Stresses ◽  
Low Density ◽  
Field Lines ◽  
Auroral Arcs

AbstractThe importance of reconnection in astrophysics has been widely recognized. It is instrumental in storing and releasing magnetic energy, the latter often in a dramatic fashion. A closely related process, playing in very low beta plasmas, is much less known. It is behind the acceleration of auroral particles in the low-density environment several 1000 km above the Earth. It involves the appearance of field-parallel voltages in presence of intense field-aligned currents. The underlying physical process is the release of magnetic shear stresses and conversion of the liberated magnetic energy into kinetic energy of the particles creating auroral arcs. In this process, field lines disconnect from the field anchored in the ionosphere and reconnect to other field lines. Because of the stiffness of the magnetic field, the process resembles mechanical fractures. It is typically active in the low-density magnetosphere of planets. However, it can also lead to significant energy conversion with high-energy particle production and subsequent gamma ray emissions in stellar magnetic fields, in particular of compact objects.

Simulation of high-energy particle production through sausage and kink instabilities in pinched plasma discharges

2006 ◽  
Vol 13 (8) ◽  
pp. 082106 ◽  
Author(s):  
Takayuki Haruki ◽  
Hamid Reza Yousefi ◽  
Katsumi Masugata ◽  
Jun-Ichi Sakai ◽  
Yusuke Mizuguchi ◽  
...  
Keyword(s):  
Particle Production ◽  
High Energy ◽  
High Energy Particle ◽  
Plasma Discharges ◽  
Energy Particle ◽  
Pinched Plasma

scholarly journals Sizes of flaring kernels in various parts of the Hα line profile

2008 ◽  
Vol 26 (10) ◽  
pp. 2991-2997 ◽  
Author(s):  
K. Radziszewski ◽  
P. Rudawy
Keyword(s):  
Line Profile ◽  
Solar Flares ◽  
Imaging System ◽  
High Energy ◽  
High Energy Particle ◽  
High Temporal Resolution ◽  
Energy Particle ◽  
Double Pass ◽  
Particle Beams ◽  
Very High

Abstract. In this paper we present new results of spectra-photometrical investigations of the flaring kernels' sizes and their intensities measured simultaneously in various parts of the Hα line profile. Our investigations were based on the very high temporal resolution spectral-imaging observations of the solar flares collected with Large Coronagraph (LC), Multi-channel Subtractive Double Pass Spectrograph and Solar Eclipse Coronal Imaging System (MSDP-SECIS) at Białkow Observatory (University of Wrocław, Poland). We have found that the areas of the investigated individual flaring kernels vary in time and in wavelengths, as well as the intensities and areas of the Hα flaring kernels decreased systematically when observed in consecutive wavelengths toward the wings of the Hα line. Our result could be explained as an effect of the cone-shaped lower parts of the magnetic loops channeling high energy particle beams exciting chromospheric plasma.

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