Comparing SSN Index to X-ray Flare and Coronal Mass Ejection Rates from Solar Cycles 22-24
arXiv:1605.00503 · doi:10.1007/s11207-016-0901-6
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.
arXiv comment17 pages, accepted to Solar Physics
References in corpus (8)
- Revisiting the Sunspot Number
- Automated LASCO CME catalog for solar cycle 23: are CMEs scale invariant?
- The Peculiar Behavior of Halo Coronal Mass Ejections in Solar Cycle 24
- The Ups and Downs of Alpha Centauri
- Maximum Coronal Mass Ejection Speed as an Indicator of Solar and Geomagnetic Activities
- The State of Self-Organized Criticality of the Sun During the Last 3 Solar Cycles. I. Observations
- Using the Maximum X-ray Flux Ratio and X-ray Background to Predict Solar Flare Class
- Estimate of Solar Maximum using the 1-8 ÅGeostationary Operational Environmental Satellites X-ray Measurements