Simultaneous measurements of X-rays and electrons during a pulsating aurora
The PULSAUR II rocket was launched from Andøya Rocket Range at 23.43 UT on 9 February 1994 into a pulsating aurora. In this paper we focus on the observations of precipitating electrons and auroral X-rays. By using models it is possible to deduce the electron energy spectrum from X-ray measurements....
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1998
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ftdoajarticles:oai:doaj.org/article:2cb0088f2c58458883d49a9a707afcbd 2023-05-15T13:25:39+02:00 Simultaneous measurements of X-rays and electrons during a pulsating aurora N. Østgaard J. Stadsnes K. Aarsnes F. Søraas K. Måseide M. Smith J. Sharber 1998-02-01T00:00:00Z https://doi.org/10.1007/s00585-998-0148-0 https://doaj.org/article/2cb0088f2c58458883d49a9a707afcbd EN eng Copernicus Publications https://www.ann-geophys.net/16/148/1998/angeo-16-148-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-998-0148-0 0992-7689 1432-0576 https://doaj.org/article/2cb0088f2c58458883d49a9a707afcbd Annales Geophysicae, Vol 16, Pp 148-160 (1998) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1998 ftdoajarticles https://doi.org/10.1007/s00585-998-0148-0 2022-12-31T13:28:41Z The PULSAUR II rocket was launched from Andøya Rocket Range at 23.43 UT on 9 February 1994 into a pulsating aurora. In this paper we focus on the observations of precipitating electrons and auroral X-rays. By using models it is possible to deduce the electron energy spectrum from X-ray measurements. Comparisons are made between the deduced electron fluxes and the directly measured electron fluxes on the rocket. We found the shape of the observed and the deduced electron spectra to fit very well, with almost identical e-folding energies in the energy range from 10 ke V to ~60–80 ke V. For the integrated fluxes from 10.8 to 250 ke V, we found a discrepancy of 30% . By combining two models, we have found a good method of deducing the electron precipitation from X-ray measurements. The discrepancies between calculations and measurements are in the range of the uncertainties in the measurements. Key words. Ionospheric particle precipitation · Magnetospheric physics · Annual phenomena · Energetic particle Article in Journal/Newspaper Andøya Directory of Open Access Journals: DOAJ Articles Andøya ENVELOPE(13.982,13.982,68.185,68.185) Annales Geophysicae 16 2 148 160 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 N. Østgaard J. Stadsnes K. Aarsnes F. Søraas K. Måseide M. Smith J. Sharber Simultaneous measurements of X-rays and electrons during a pulsating aurora |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The PULSAUR II rocket was launched from Andøya Rocket Range at 23.43 UT on 9 February 1994 into a pulsating aurora. In this paper we focus on the observations of precipitating electrons and auroral X-rays. By using models it is possible to deduce the electron energy spectrum from X-ray measurements. Comparisons are made between the deduced electron fluxes and the directly measured electron fluxes on the rocket. We found the shape of the observed and the deduced electron spectra to fit very well, with almost identical e-folding energies in the energy range from 10 ke V to ~60–80 ke V. For the integrated fluxes from 10.8 to 250 ke V, we found a discrepancy of 30% . By combining two models, we have found a good method of deducing the electron precipitation from X-ray measurements. The discrepancies between calculations and measurements are in the range of the uncertainties in the measurements. Key words. Ionospheric particle precipitation · Magnetospheric physics · Annual phenomena · Energetic particle |
format |
Article in Journal/Newspaper |
author |
N. Østgaard J. Stadsnes K. Aarsnes F. Søraas K. Måseide M. Smith J. Sharber |
author_facet |
N. Østgaard J. Stadsnes K. Aarsnes F. Søraas K. Måseide M. Smith J. Sharber |
author_sort |
N. Østgaard |
title |
Simultaneous measurements of X-rays and electrons during a pulsating aurora |
title_short |
Simultaneous measurements of X-rays and electrons during a pulsating aurora |
title_full |
Simultaneous measurements of X-rays and electrons during a pulsating aurora |
title_fullStr |
Simultaneous measurements of X-rays and electrons during a pulsating aurora |
title_full_unstemmed |
Simultaneous measurements of X-rays and electrons during a pulsating aurora |
title_sort |
simultaneous measurements of x-rays and electrons during a pulsating aurora |
publisher |
Copernicus Publications |
publishDate |
1998 |
url |
https://doi.org/10.1007/s00585-998-0148-0 https://doaj.org/article/2cb0088f2c58458883d49a9a707afcbd |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) |
geographic |
Andøya |
geographic_facet |
Andøya |
genre |
Andøya |
genre_facet |
Andøya |
op_source |
Annales Geophysicae, Vol 16, Pp 148-160 (1998) |
op_relation |
https://www.ann-geophys.net/16/148/1998/angeo-16-148-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-998-0148-0 0992-7689 1432-0576 https://doaj.org/article/2cb0088f2c58458883d49a9a707afcbd |
op_doi |
https://doi.org/10.1007/s00585-998-0148-0 |
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Annales Geophysicae |
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16 |
container_issue |
2 |
container_start_page |
148 |
op_container_end_page |
160 |
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