Abstract
The paper presents data on flux variations of ionizing EUV radiation for wavelengths shorter than 130 nm and in L-alpha hydrogen line on the basis of measurements performed on-board a Russian Earth-orbiting and interplanetary spacecrafts in the period since 1978 to 1997. These data were received by using common heritage instrumentation installed on four PROGNOZ satellites, INTERBALL-1, PHOBOS, and the geosynchronous meteorological satellite ELECTRO. Though the time series of observations is not continuous, it gives a possibility to estimate flux variations in certain periods of time and during 11–year cycle. During quiet periods of solar activity (except for flares) a level of diurnal variations is rather low, it being equal to about 3%. Radiation changes in L-alpha line from maximum to minimum in an 11–year cycle of solar activity achieves 200% and increases in the range of short waves. Data measured onboard the Russian satellites are compared with data obtained by Solar Mesospheric Explorer.
Similar content being viewed by others
References
Anevsky S.I., Vernyi A.E., Gonyukh D.A., Kazachevskaya T.V., Konev I.V., Sapritsky V.I., Khromchenko V.B. and Tsygelnitsky Yu.N., 1991: Calibration of the absolute spectral sensetivity of a solar UV radiometer with the use of synchrotron radiation. Nuclear Instruments and Methods in Physics Reasearch, A308, 165–168.
Aschwanden M.J., 1994: Irradiance observations of the 1–8 A Solar soft X-ray flux from GOES. Solar Physics, 152, 53–68.
Hinteregger H.E., 1981: Representation of Solar EUV fluxes for aeronomical applications, Advances in Space Research, 1, 39–52.
Kazachevskaya T.V., Ivanov-Kholdny G.S. and Gonyukh D.A., 1985: Ob otsenke absolutnoi velitchini korotkovolnovogo islutchenia Solntsa po ismereniam na ISZ v 1978–79 g. Geomagnetism and Aeronomy, 25, 996–997 (in Russian).
Kazachevskaya T.V.and Nusinov A.A., 1986: Prognostic model of short-wave ultraviolet Solar radiation. Contributions of the Astronomical Observatory Skalnate-Pleso, 15, 593–596.
Kazachevskaya T.V., Bukusova L.L., Gonyukh D.A., Lomovsky A.I. and Tsygelnitsky Yu.N., 1991: EUV observations of Solar flares from the Mars's orbit. Planet. Space Sci., 39, 39–40.
Kazachevskaya T.V., Lomovsky A.I. and Nusinov A.A., 1994: Solar EUV variations near activity maxima. Solar Phys., 152, 77–80.
Kazachevskaya T.V., Lomovsky A.I., Nusinov A.A., Svidsky P.M., Tsigelnitsky Y.N., Oraevsky V.N., Kopaev I.M., Boldirev S.I and Gonykh D.A., 1996: Solar flux and spectrum measurements in the EUV spectral region on board CORONAS-I satellite. Izvestia vischix utchebnih zavedeniy. Radiophysika, 39, 1514–1520.
Solar Geophysical Data, NGDC/NOAA Boulder, 1989.
Torr M.R., Torr D.G., Ong R.A. and Hinteregger H.E.,1979: Ionization frequencies for major thermospheric consitituevnts as a function of solar cycle 21. Geophys. Res. Lett., 6, 771–778.
Woods T.N. and Rottman G.J., 1990: Solar EUV irradiance derived from a sounding rocket experiment on November 10, 1988. J. Geophys. Res., 95, 6227–6236.
Zhitnik I.A., Tindo I.P.and Urnov A.M. 1989: Issledovania rentgenovskogo izlutchenia Solntsa v FIANe. Trudi FIAN, 195, 3–18 (in Russian).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kazachevskaya, T., Nusinov, A. & Gonyukh, D. Solar EUV Flux Variations in 11–Year Solar Activity Cycle According to Measurements On-Board PROGNOZ Satellite Series, INTERBALL-1 and ELECTRO Satellites during 1978–1997 Period. Studia Geophysica et Geodaetica 42, 92–100 (1998). https://doi.org/10.1023/A:1023344701917
Published:
Issue Date:
DOI: https://doi.org/10.1023/A:1023344701917