Spectral variability of scorpius X-1, as observed with EXOSAT

Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification p...
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Autor*in:	Brinkman, A. C. [verfasserIn] Mewe, R. Langerwerf, T. Heise, J. Peacock, A. White, N.

Format:	Artikel
Sprache:	Englisch

Erschienen:	1985

Schlagwörter:	Oxygen Flare Emission Feature Proportional Counter Instrument Performance

Anmerkung:	© D. Reidel Publishing Company 1985

Übergeordnetes Werk:	Enthalten in: Space science reviews - Kluwer Academic Publishers, 1962, 40(1985), 1-2 vom: Feb., Seite 201-206
Übergeordnetes Werk:	volume:40 ; year:1985 ; number:1-2 ; month:02 ; pages:201-206

Links:	Volltext

DOI / URN:	10.1007/BF00212885

Katalog-ID:	OLC2033668835

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520			\|a Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required.
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allfields	10.1007/BF00212885 doi (DE-627)OLC2033668835 (DE-He213)BF00212885-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Brinkman, A. C. verfasserin aut Spectral variability of scorpius X-1, as observed with EXOSAT 1985 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1985 Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. Oxygen Flare Emission Feature Proportional Counter Instrument Performance Mewe, R. aut Langerwerf, T. aut Heise, J. aut Peacock, A. aut White, N. aut Enthalten in Space science reviews Kluwer Academic Publishers, 1962 40(1985), 1-2 vom: Feb., Seite 201-206 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:40 year:1985 number:1-2 month:02 pages:201-206 https://doi.org/10.1007/BF00212885 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_150 GBV_ILN_2002 GBV_ILN_2015 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4314 GBV_ILN_4700 AR 40 1985 1-2 02 201-206
spelling	10.1007/BF00212885 doi (DE-627)OLC2033668835 (DE-He213)BF00212885-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Brinkman, A. C. verfasserin aut Spectral variability of scorpius X-1, as observed with EXOSAT 1985 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1985 Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. Oxygen Flare Emission Feature Proportional Counter Instrument Performance Mewe, R. aut Langerwerf, T. aut Heise, J. aut Peacock, A. aut White, N. aut Enthalten in Space science reviews Kluwer Academic Publishers, 1962 40(1985), 1-2 vom: Feb., Seite 201-206 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:40 year:1985 number:1-2 month:02 pages:201-206 https://doi.org/10.1007/BF00212885 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_150 GBV_ILN_2002 GBV_ILN_2015 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4314 GBV_ILN_4700 AR 40 1985 1-2 02 201-206
allfields_unstemmed	10.1007/BF00212885 doi (DE-627)OLC2033668835 (DE-He213)BF00212885-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Brinkman, A. C. verfasserin aut Spectral variability of scorpius X-1, as observed with EXOSAT 1985 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1985 Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. Oxygen Flare Emission Feature Proportional Counter Instrument Performance Mewe, R. aut Langerwerf, T. aut Heise, J. aut Peacock, A. aut White, N. aut Enthalten in Space science reviews Kluwer Academic Publishers, 1962 40(1985), 1-2 vom: Feb., Seite 201-206 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:40 year:1985 number:1-2 month:02 pages:201-206 https://doi.org/10.1007/BF00212885 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_150 GBV_ILN_2002 GBV_ILN_2015 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4314 GBV_ILN_4700 AR 40 1985 1-2 02 201-206
allfieldsGer	10.1007/BF00212885 doi (DE-627)OLC2033668835 (DE-He213)BF00212885-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Brinkman, A. C. verfasserin aut Spectral variability of scorpius X-1, as observed with EXOSAT 1985 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1985 Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. Oxygen Flare Emission Feature Proportional Counter Instrument Performance Mewe, R. aut Langerwerf, T. aut Heise, J. aut Peacock, A. aut White, N. aut Enthalten in Space science reviews Kluwer Academic Publishers, 1962 40(1985), 1-2 vom: Feb., Seite 201-206 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:40 year:1985 number:1-2 month:02 pages:201-206 https://doi.org/10.1007/BF00212885 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_150 GBV_ILN_2002 GBV_ILN_2015 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4314 GBV_ILN_4700 AR 40 1985 1-2 02 201-206
allfieldsSound	10.1007/BF00212885 doi (DE-627)OLC2033668835 (DE-He213)BF00212885-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Brinkman, A. C. verfasserin aut Spectral variability of scorpius X-1, as observed with EXOSAT 1985 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1985 Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. Oxygen Flare Emission Feature Proportional Counter Instrument Performance Mewe, R. aut Langerwerf, T. aut Heise, J. aut Peacock, A. aut White, N. aut Enthalten in Space science reviews Kluwer Academic Publishers, 1962 40(1985), 1-2 vom: Feb., Seite 201-206 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:40 year:1985 number:1-2 month:02 pages:201-206 https://doi.org/10.1007/BF00212885 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_150 GBV_ILN_2002 GBV_ILN_2015 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4314 GBV_ILN_4700 AR 40 1985 1-2 02 201-206
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author	Brinkman, A. C.
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topic_title	600 VZ 16,12 ssgn Spectral variability of scorpius X-1, as observed with EXOSAT Oxygen Flare Emission Feature Proportional Counter Instrument Performance
topic	ddc 600 ssgn 16,12 misc Oxygen misc Flare misc Emission Feature misc Proportional Counter misc Instrument Performance
topic_unstemmed	ddc 600 ssgn 16,12 misc Oxygen misc Flare misc Emission Feature misc Proportional Counter misc Instrument Performance
topic_browse	ddc 600 ssgn 16,12 misc Oxygen misc Flare misc Emission Feature misc Proportional Counter misc Instrument Performance
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title	Spectral variability of scorpius X-1, as observed with EXOSAT
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title_full	Spectral variability of scorpius X-1, as observed with EXOSAT
author_sort	Brinkman, A. C.
journal	Space science reviews
journalStr	Space science reviews
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author_browse	Brinkman, A. C. Mewe, R. Langerwerf, T. Heise, J. Peacock, A. White, N.
container_volume	40
class	600 VZ 16,12 ssgn
format_se	Aufsätze
author-letter	Brinkman, A. C.
doi_str_mv	10.1007/BF00212885
dewey-full	600
title_sort	spectral variability of scorpius x-1, as observed with exosat
title_auth	Spectral variability of scorpius X-1, as observed with EXOSAT
abstract	Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. © D. Reidel Publishing Company 1985
abstractGer	Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. © D. Reidel Publishing Company 1985
abstract_unstemmed	Abstract EXOSAT measurements of Sco X-1 have been carried out with the 500 l/mm and 1000 l/mm grating spectrometers and simultaneously with the gas scintillation proportional counter (GSPC) on two occasions in August 1983. The first observing period, part of the instrument performance verification phase, on August 7 and 8, 1983, lasted for about twenty two hours and showed the source flaring during the first six hours. During the second observing period, August 29 and 30, 1983, the source was again active during part of the time. The lightcurves of the spectrometers and the GSPC show some correlation during the flaring activity. The grating spectra show clear emission features between 12 and 20 Å, which vary with time. When fitting the observed spectra to a thermal bremsstrahlungs model (exponential with gaunt factor) together with absorption by neutral matter, a reduced abundance of oxygen in the absorbing matter with respect to Solar is required. © D. Reidel Publishing Company 1985
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container_issue	1-2
title_short	Spectral variability of scorpius X-1, as observed with EXOSAT
url	https://doi.org/10.1007/BF00212885
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author2	Mewe, R. Langerwerf, T. Heise, J. Peacock, A. White, N.
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up_date	2024-07-03T17:56:11.081Z
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