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Solar flare soft X-ray spectra from Diogeness observations

Published online by Cambridge University Press:  09 September 2016

Marek Stȩślicki ,
Janusz Sylwester ,
Barbara Sylwester ,
Żaneta Szaforz ,
Zbigniew Kordylewski ,
Stefan Płocieniak ,
Marek Siarkowski  and
Kenneth J. H. Phillips
Marek Stȩślicki
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Janusz Sylwester
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Barbara Sylwester
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Żaneta Szaforz
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected] Astronomical Institute, University of Wroclaw, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Zbigniew Kordylewski
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Stefan Płocieniak
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Marek Siarkowski
Affiliation:
Solar Physics Division, Space Research Centre Polish Academy of Sciences, Kopernika 11, 51-622 Wrocław, Poland email: [email protected]
Kenneth J. H. Phillips
Affiliation:
Earth Sciences Department, Natural History Museum, London, United Kingdom, email: [email protected]
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Abstract

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Diogeness was an uncollimated scanning flat crystal spectrometer observing solar flare X-ray spectra in four narrow wavelength bands in the vicinity of Ca xix, S xv and Si xiii He-like line ‘triplets’ around 3.18 Å, 5.04 Å and 6.65 Å. In two of the spectral channels, emission lines around the Ca xix 3.178 Å resonance line were scanned in opposite directions, being diffracted from precisely adjusted identical Quartz crystals mounted on a common shaft in a so-called Dopplerometer (tachometer) configuration. Observations of solar X-ray spectra made by Diogeness provide a direct diagnostic information on plasma characteristics during the impulsive flare energy release. We present a sample of events which occurred during the Diogeness operation time from August 16, 2001 to September 17, 2001.

Keywords

techniques: spectroscopic – Sun: coronaSun: flares – Sun: X-raysgamma rays
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 109 - 111
Copyright
Copyright © International Astronomical Union 2016 

References

Płocieniak, S., Sylwester, J., & Kordylewski, Z., et al. 2002, ESA SP, 506, 963 Google Scholar
Siarkowski, M., Sylwester, J., & Płocieniak, S. et al. 2002, ESA SP, 506, 753 Google Scholar
Sylwester, J., Kordylewski, Z., & Płocieniak, S. et al. 2015, Solar Physics, 239, 149 Google Scholar