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08 February 2025 |
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Article overview
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Comparing SSN Index to X-ray Flare and Coronal Mass Ejection Rates from Solar Cycles 22-24 | Lisa M. Winter
; Rick Pernak
; K.S. Balasubramaniam
; | Date: |
2 May 2016 | Abstract: | The newly revised sunspot number series allows for placing historical
geoeffective storms in the context of several hundred years of solar activity.
Using statistical analyses of the Geostationary Operational Environmental
Satellites (GOES) X-ray observations from the past ~30 years and the Solar and
Heliospheric Observatory (SOHO) Large Angle and Spectrometric Coronagraph
(LASCO) Coronal Mass Ejection (CME) catalog (1996-present), we present
sunspot-number-dependent flare and CME rates. In particular, we present X-ray
flare rates as a function of sunspot number for the past three cycles. We also
show that the 1-8 AA X-ray background flux is strongly correlated with sunspot
number across solar cycles. Similarly, we show that the CME properties (e.g.,
proxies related to the CME linear speed and width) are also correlated with
sunspot number for SC 23 and 24. These updated rates will enable future
predictions for geoeffective events and place historical storms in the context
of present solar activity. | Source: | arXiv, 1605.0503 | Services: | Forum | Review | PDF | Favorites |
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