X-ray Line Emission Associated with Solar Flares

1972 ◽  
pp. 127-140
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
X Ray

scholarly journals SolpeX: the soft X-ray flare polarimeter–spectrometer for the ISS

2014 ◽  
Vol 10 (S305) ◽  
pp. 114-120
Author(s):  
Janusz Sylwester ◽  
Stefan Płocieniak ◽  
Jarosław Bakała ◽  
Żaneta Szaforz ◽  
Marek Stȩślicki ◽  
...  
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Impulsive Phase ◽  
Particle Beams ◽  
X Ray ◽  
Hot Plasma ◽  
Spectral Imager ◽  
Polarized Bremsstrahlung ◽  
Made In ◽  
Fast Rotating

AbstractWe present the innovative soft X-ray spectro-polarimeter, SolpeX. This instrument consists of three functionally independent blocks. They are to be included into the Russian instrument KORTES, to be mounted onboard the ISS. The three SolpeX units are: a simple pin-hole X-ray spectral imager, a polarimeter, and a fast-rotating drum multiple-flat-crystal Bragg spectrometer. Such a combination of measuring blocks will offer a new opportunity to reliably measure possible X-ray polarization and spectra of solar flares, in particular during the impulsive phase. Polarized Bremsstrahlung and line emission due to the presence of directed particle beams will be detected, and measurements of the velocities of evaporated hot plasma will be made. In this paper we discuss the details of the construction of the SolpeX units. The delivery of KORTES with SolpeX to the ISS is expected to happen in 2017/2018.

YOHKOH Observations of Fe XXVI X-Ray Line Emission from Solar Flares

1996 ◽  
Vol 464 ◽  
pp. 487 ◽  
Author(s):  
C. D. Pike ◽  
K. J. H. Phillips ◽  
J. Lang ◽  
A. Sterling ◽  
T. Watanabe ◽  
...  
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
X Ray

Silicon X-ray line emission from solar flares and active regions

Solar Physics ◽  
1978 ◽  
Vol 60 (1) ◽  
pp. 123-136 ◽  
Author(s):  
John H. Parkinson ◽  
R. S. Wolff ◽  
H. L. Kestenbaum ◽  
W. H.-M. Ku ◽  
J. R. Lemen ◽  
...  
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Active Regions ◽  
X Ray

The relation between hard X-ray and transition-region line emission in solar flares

Solar Physics ◽  
1985 ◽  
Vol 96 (2) ◽  
pp. 317-330 ◽  
Author(s):  
John T. Mariska ◽  
A. I. Poland
Keyword(s):  
Transition Region ◽  
Solar Flares ◽  
Line Emission ◽  
X Ray ◽  
Region Line

scholarly journals Spectroscopic Diagnostics for Ions Observed in Solar and Cosmic Plasmas

1990 ◽  
Vol 115 ◽  
pp. 11-20 ◽  
Author(s):  
Helen E Mason
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Wavelength Region ◽  
Spectral Lines ◽  
Emission Lines ◽  
Atomic Processes ◽  
X Ray ◽  
Spectroscopic Diagnostics ◽  
Solar Spectral Line ◽  
Diagnostic Properties

AbstractThe X-ray wavelength region (1-200Å) is rich in spectral lines from highly ionised systems. Spectra from the solar atmosphere have been studied extensively with various instruments covering different wavelength regions. In this paper, we discuss the solar spectral line emission with particular reference to iron ions and helium like ions observed during solar flares. The atomic processes involved in the calculation of theoretical intensities for low density plasmas are outlined together with the diagnostic properties of the emission lines. Comparisons are made with available cosmic X-ray spectra and predicted spectra for future projects, such as AXAF.

scholarly journals RESIK Observations of Helium-like Argon X-Ray Line Emission in Solar Flares

2008 ◽  
Vol 681 (2) ◽  
pp. L117-L120 ◽  
Author(s):  
J. Sylwester ◽  
B. Sylwester ◽  
K. J. H. Phillips
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
X Ray

Iron K-Line Emission from X-Ray Binaries

1988 ◽  
Vol 102 ◽  
pp. 47-50
Author(s):  
K. Masai ◽  
S. Hayakawa ◽  
F. Nagase
Keyword(s):  
Accretion Disk ◽  
Radiative Recombination ◽  
Characteristic Temperature ◽  
Line Emission ◽  
Ionization Front ◽  
Continuum Radiation ◽  
X Ray ◽  
Low Mass ◽  
X Ray Binaries

AbstractEmission mechanisms of the iron Kα-lines in X-ray binaries are discussed in relation with the characteristic temperature Txof continuum radiation thereof. The 6.7 keV line is ascribed to radiative recombination followed by cascades in a corona of ∼ 100 eV formed above the accretion disk. This mechanism is attained for Tx≲ 10 keV as observed for low mass X-ray binaries. The 6.4 keV line observed for binary X-ray pulsars with Tx> 10 keV is likely due to fluorescence outside the He II ionization front.

The occurrence of single hard x-ray sources in solar flares

2003 ◽  
Vol 32 (12) ◽  
pp. 2483-2488
Author(s):  
C GOFF ◽  
S MATTHEWS ◽  
L HARRA
Keyword(s):  
Solar Flares ◽  
X Ray

Statistical analysis of soft X-ray solar flares during solar cycles 22, 23, and 24

2021 ◽  
Vol 366 (1) ◽  
Author(s):  
Bo Xiong ◽  
Ting Wang ◽  
Xiaolin Li ◽  
Yunxing Yin
Keyword(s):  
Statistical Analysis ◽  
Solar Flares ◽  
Solar Cycles ◽  
X Ray
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