Powerful Solar Flares in September 2017. Comparison with the Largest Flares in Cycle 24

Бруевич, Е. А.; Bruevich, V. V.

doi:10.1007/s10511-018-9531-z

Cited by 2 publications

(6 citation statements)

References 3 publications

(4 reference statements)

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“…As can be seen on Figure 2 the relationship between the FI optical flare index and the total energy E 0.1−0.8 in the Soft X-ray range, calculated in this work for the flares from Table 1 by the formula (1), closer than between the flare indices in Figure 1.…”

Section: Introductionsupporting

confidence: 53%

“…2. X-ray index XI is an analog of the total energy of flare E 0.1−0.8 , calculated by formula (1). The relationship between XI and E 0.1−0.8 is described by equation (3), resulting if your know the index XI you can rapidly evaluate of the most important geoeffective flare parameter E 0.1−0.8 .…”

Section: Discussionmentioning

confidence: 99%

“…Then we determine the level FWQM and find the moments t a and t b using a magnitude of the flux at a maximum F max 0.1−0.8 . In Figure 3 geoeffective characteristic of the flare [1,18].…”

Section: Introductionmentioning

confidence: 99%

“…When observing solar flares, all the parameters characterizing this phenomenon are important: the area of the flare, its average brightness, the shape of the light curves both in the optical range and in the ultraviolet and X-ray ranges. Both the maximum amplitude of the flare in different bands and lines of the emission spectrum and the total energy that came from the flare to the Earth are very important, [1].…”

Section: Introductionmentioning

confidence: 99%

“…The XI has the dimension J/m 2 and is approximately equal to the total energy E 0.1−0.8 which is calculated as the integral under the light curve after subtraction of the background by the formula (1).…”

Section: Introductionmentioning

confidence: 99%

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Classification of Solar Flares Based on the Maximum Flux in Soft X–rays and on Duration of Flare

Бруевич¹

2018

Proceedings of the 22nd All-Russia Conference on Solar and Solar-Terrestrial Physics

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Solar flare activity is characterized by classification systems, both in optical and Soft X-ray ranges. The most generally accepted classifications of solar flares describe important parameters of flare such as the maximum of brightness of the flare in optical range in H α (flare class in H α is changed from F to B), area of the flare in H α which is changed from S (less than 2 square degrees) to 4 (more than 24.7 square degrees) and the maximum amplitude of the Soft X-ray flux in the band 0.1-0.8 nm (X-ray flare of classes from C to X). A new classification of solar flares which is proposed in this paper -the X-ray index of flare XI, based on measurements of radiation in the range 0.1-0.8 nm on the GOES satellites. The XI index has a clear physical interpretation associated with the total flare energy in the range 0.1-0.8 nm. XI is easily calculated for each flare with use of available GOES data. The XI index can be used to assess flares along with other important geoeffective parameters.

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Section: Introductionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

“…Then we determine the level FWQM and find the moments t a and t b using a magnitude of the flux at a maximum F max 0.1−0.8 . In Figure 3 geoeffective characteristic of the flare [1,18].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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