Timelines of cosmic ray intensity,Ap, IMF, and sunspot numbers since 1937
نویسندگان
چکیده
منابع مشابه
Time Delays in Cosmic Ray Propagation
Cosmic Rays (CR) travel at speeds essentially indistinguishable from the speed of light. However whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. Those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. Fu...
متن کاملObjective Calibration of Sunspot Numbers
Waldmeier [1971] found a very tight relationship between the F10.7 solar radio flux and the sunspot number and suggested using the flux for an objective calibration of the sunspot number. He suggested that if this relationship changed later on, the sunspot number should be recalibrated, assuming that the calibration must have drifted with time. I repeat his analysis using data up to the present...
متن کاملBHP universality in sunspot numbers fluctuations
We analyze the famous Wolf’s sunspot numbers. The time series shows a mean period with duration of 133 months. We observed that the mean period consists of two equal sized phases, descendent and ascendent, that can be well fitted by two ortogonal lines. The sunspot numbers standard deviation period is well fitted by a sine function. We discovered that the distribution of the sunspot number fluc...
متن کاملForecasting Sunspot Numbers with Neural Networks
This paper presents a feedforward neural network approach to sunspot forecasting. The sunspot series were analyzed with feedforward neural networks, formalized based on statistical models. The statistical models were used as comparison models along with recurrent neural networks. The feedforward networks had 24 inputs (depending on the number of predictor variables), one hidden layer with 20 ...
متن کاملBHP universality and gaussianity in sunspot numbers fluctuations
We analyze the famous Wolf’s sunspot numbers. We discovered that the distribution of the sunspot number fluctuations is a mixture of the BHP distribution with the Gaussian distribution.
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2011
ISSN: 0148-0227
DOI: 10.1029/2011ja017021