Helium-like Argon Line Emission in Solar Flares

1993 ◽  
Vol 419 ◽  
pp. 426 ◽  
Author(s):  
K. J. H. Phillips ◽  
L. K. Harra ◽  
F. P. Keenan ◽  
D. M. Zarro ◽  
M. Wilson
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Argon Line

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.

scholarly journals Cross sections relevant toγ-ray line emission in solar flares:3He-induced reactions on16Onuclei

2003 ◽  
Vol 68 (2) ◽  
Author(s):  
V. Tatischeff ◽  
J. Duprat ◽  
J. Kiener ◽  
M. Assunção ◽  
A. Coc ◽  
...  
Keyword(s):  
Cross Sections ◽  
Solar Flares ◽  
Line Emission

Iron Line Emission at 1.9 Å during Solar Flares

1970 ◽  
Vol 160 ◽  
pp. 309 ◽  
Author(s):  
J. L. Culhane ◽  
K. J. H. Phillips
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Iron Line

scholarly journals Observations and modeling of the ultraviolet emission of solar flares

2015 ◽  
Vol 11 (S320) ◽  
pp. 57-59
Author(s):  
Katarzyna Mikuła ◽  
Arkadiusz Berlicki ◽  
Petr Heinzel
Keyword(s):  
Uv Radiation ◽  
Solar Flares ◽  
Line Emission ◽  
Uv Spectra ◽  
Interface Region ◽  
Continuum Emission ◽  
Ultraviolet Emission ◽  
Imaging Spectrograph ◽  
The Continuum

AbstractIn this paper we present the method of using far UV spectra of the flare observed by Interface Region Imaging Spectrograph (IRIS) for determination of the contribution of the continuum emission to the total UV radiation observed e.g. by SDO in 1600 Å channel. In our method the Si IV (1402.77 Å) line observed by IRIS is used as a proxy of C IV line emission contained in SDO/AIA UV images. Determined intensity of the flare continuum emission can be used to study the physics of the flare heated chromosphere and for better understanding of the emission mechanisms.

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

Interpretations and implications of y-ray lines from solar flares, the galactic centre and y-ray transients

1981 ◽  
Vol 301 (1462) ◽  
pp. 671-686 ◽  
Keyword(s):  
Solar Flares ◽  
Gamma Ray ◽  
Line Emission ◽  
Galactic Centre

Observations and theories of astrophysical y-ray line emission are reviewed and prospects for future observations by the spectroscopy experiments on the planned Gamma-Ray Observatory are discussed.

Detection of y-ray lines

1981 ◽  
Vol 301 (1462) ◽  
pp. 669-669
Keyword(s):  
Solar Flares ◽  
Gamma Ray ◽  
Line Emission ◽  
Galactic Centre ◽  
Centre Region ◽  
Transient Events ◽  
Positive Results

Although detectable y-ray line emission from various astrophysical sources has been predicted for over two decades, it is only recently that positive results have been obtained. The first unambiguous extraterrestrial lines were from the great solar flares of 2 and 4 August 1972, at 0.5, 2.2 and 4.4 MeV . Earlier reports from balloon observations of lines from the galactic centre and Cen A near 2.2, 4.4 and 6.13 MeV seem not to have been confirmed by more recent spacecraft observations. The 0.5 MeV line seems definitely to have been seen from the galactic centre region. Lines at various energies have also been detected from transient events and during cosmic y-ray bursts. Earlier limits from balloons were at 10 -3 ph cm-2 s -1 ; recent observations and limits are nearer 10 -4 ph cm -2 s -1 . The Gamma-Ray Observatory to be launched in 1985 will carry an array of cooled Ge detectors whose sensitivity will be ca. 10 -5 ph cm -2 s -1 .

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
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