A new catalogue of solar flare events from soft x-ray GOES signal in the period 1986-2020

Abstract

Solar flares, along with other sun-originated events such as Coronal Mass Ejections, fast solar wind streams, and solar energetic particles are among the most relevant events in Space Weather. Moreover, solar flares are the most energetic processes that occur in our solar system. The in-depth study of their occurrence statistics, both over extended periods or during individual solar cycles, allows us to improve and constrain the basic physical models of their origin. Increasing the number of detected events, especially those of lower intensity, and the number of physical parameters that describe the detected flares is, therefore, a mandatory goal. In this paper, we present a computationally efficient algorithm for the detection of solar flares in the soft-X solar flux provided by the GOES (NASA/NOAA) satellite constellation. Our code produces a new flare catalogue increasing the number of events with respect to the official GOES list. In addition to increasing the number of identified events, the catalogue contains information such as: an estimate of the total energy released, start and end time of the event, possible overlap with other events, background level of the GOES X-ray emission close to the revealed event. After a detailed description of the detection algorithm, we carry out a preliminary analysis of the flares reported in our catalogue and compare our results with the official list of GOES for the period from 1998 to 2020.

15 pages, 8 figures

References in corpus (9)

• Ideal kink instability of a magnetic loop equilibrium
• Flare-productive active regions
• Automated Solar Flare Statistics in Soft X-rays over 37 Years of GOES Observations - The Invariance of Self-Organized Criticality during Three Solar Cycles
• The Thermal Properties of Solar Flares Over Three Solar Cycles Using GOES X-ray Observations
• A Comparison of Flare Forecasting Methods. IV. Evaluating Consecutive-Day Forecasting Patterns
• What determines the X-ray intensity and duration of a solar flare?
• Flare Forecasting Algorithms Based on High-Gradient Polarity Inversion Lines in Active Regions
• The morphology of average solar flare time profiles from observations of the Sun's lower atmosphere
• On the Power-Law Distributions of X-ray Fluxes from Solar Flares Observed with GOES

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• Correlation between active regions' spectra at high radio frequencies and solar flare occurrences