Extreme ultraviolet and X-ray emission of solar flares as observed from the CORONAS-F spacecraft in 2001–2003

  title={Extreme ultraviolet and X-ray emission of solar flares as observed from the CORONAS-F spacecraft in 2001–2003},
  author={Anatoly A. Nusinov and T. V. Kazachevskaya},
  journal={Solar System Research},
The results of measuring UV radiation onboard the CORONAS-F spacecraft during solar flares in 2001–2003 are considered. Some conclusions from the analysis of variations of solar-flare emission in several spectral intervals, namely, in soft X-rays, in the 10-to 130-nm range, and in the band near 120 nm, are discussed. The data were obtained by the VUSS-L and SUFR instruments. Time and energy characteristics of flares recorded onboard the CORONAS-F spacecraft are compared to the GOES measurements… Expand
CORONAS-F Project: The Study of Solar Activity and Its Effects on the Earth
The CORONAS-F space mission is characterized in general terms as part of the Russian CORONAS space project aimed at the study of solar activity and solar-terrestrial coupling. The composition of theExpand
Large Flares (M1–X7) in Solar Activity Cycle 24
The large (X-ray class > M1) and very large (X-ray class > X1) flares (according to the observations of GOES-15 and Preliminary data from Current Catalog of Flare Events) in solar activity cycle 24Expand
EUV irradiance observations from SDO/EVE as a diagnostic of solar flares
  • R. Milligan
  • Physics
  • Proceedings of the International Astronomical Union
  • 2015
Abstract For the past six years, the EUV Variability Experiment (EVE) onboard the Solar Dynamics Observatory has been monitoring changes in the Sun's extreme ultraviolet output over a range ofExpand
Anomalous temporal behaviour of broadband Lyα observations during solar flares from SDO/EVE
Despite being the most prominent emission line in the solar spectrum, there has been a notable lack of studies devoted to variations in Lyemission during solar flares in recent years. However, theExpand
Observations of a solar flare and filament eruption in Lyman alpha and X-rays
We aim to characterise the appearance and behaviour of a flare and filament ejection which occurred on 8th September 1999 and was observed by TRACE in L-alpha as well as by the Yohkoh Soft and HardExpand
Lyman‐alpha Variability During Solar Flares Over Solar Cycle 24 Using GOES‐15/EUVS‐E
The chromospheric Lyman-alpha line of neutral hydrogen (\lya; 1216A) is the strongest emission line in the solar spectrum. Fluctuations in \lya\ are known to drive changes in planetary atmospheres,Expand
Variability of Extreme Ultraviolet Fluxes at Various Timescales as Measured On board the CORONAS Space Mission (SUFR-SP-K and VUSS-L Experiments)
The launch of the CORONAS satellites was of fundamental importance to the development of the national space weather service. The flights of the CORONAS automatic solar observatory gave us a clearExpand


Ultraviolet, hard X-ray, and gamma-ray emission of solar flares recorded by VUSS-L and SONG instruments in 2001–2003
The results of simultaneous measurements of variations of UV radiation (in a band near the hydrogen Lα line, 121.6 nm) and hard X-ray and gamma-ray radiation (50 keV-200 MeV) performed by the VUSS-LExpand
Measurement of Extreme Ultraviolet Solar Radiation in Different Wavelength Intervals Onboard the CORONAS Satellites: Instruments and Main Results
The paper presents a brief review of the instruments developed for measurement of ionizing extreme UV solar radiation at wavelengths of less than 130 nm onboard the CORONAS-I and CORONAS-F satellitesExpand
Flare observation of the Sun as a star by SUMER/SOHO in the hydrogen Lyman continuum
During the execution of the programme "Sun as a star", while the SUMER (Solar Ultraviolet Emission of Emitted Radiation)/SOHO (SOlar and Heliospheric Observatory) slit was collecting the scatteredExpand
Hα, Extreme-Ultraviolet, and Microwave Observations of the 2000 March 22 Solar Flare and Spontaneous Magnetic Reconnection
The evolution of a GOES class X1.1 solar flare, which occurred in NOAA Active Region 8910 on 2000 March 22, is discussed using observations from the Owens Valley Solar Array (OVSA), Big Bear SolarExpand
Ultraviolet Flare Ribbon Brightenings and the Onset of Hard X-Ray Emission
The broadband UV images taken by the Transition Region and Coronal Explorer (TRACE) provide a unique opportunity to observe transition region and chromospheric emission from flare footpoints at highExpand
In this paper we present a comprehensive case study of an X-class flare observed on 2001 April 6. The flare consists of two episodes, the first characterized by impulsive spiky bursts and the secondExpand
Flare Ribbon Expansion and Energy Release Rate
We have examined the relation between the evolution of the Hα flare ribbons and the released magnetic energy in a solar flare that occurred on 2001 April 10. Based on the magnetic reconnection model,Expand
Magnetic Field Dissipation in a High-Temperature Plasma as a Mechanism of Energy Release in a Solar Flare
  • 1989