Event calendar file
3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
Support
Speakers
- Dr. KOUSHIK GHOSH
Primary authors
- Dr. KOUSHIK GHOSH (DEPARTMENT OF MATHEMATICS, UNIVERSITY INSTITUTE OF TECHNOLOGY, THE UNIVERSITY OF BURDWAN, INDIA)
Co-authors
- Prof. PROBHAS RAYCHAUDHURI (DEPARTMENT OF APPLIED MATHEMATICS, UNIVERSITY OF CALCUTTA, INDIA)
Abstract content
We have used Simple Denoising Algorithm using Wavelet Transform on the daily Forbush decrease data from the year 1967 to 2003. For this data we observe periodicity around 5-6, 11, 13, 15 and 24 years. For all the obtained peaks corresponding confidence levels are higher than 95%. We observe that the periodicity of around 5-6 years is common to solar flare data, major proton event data and solar neutrino flux data. Because of that common periodicity, it is suggested that Forbush decrease with the solar flare data and major solar proton event data together with solar neutrino flux variations, behave similarly and may have a common origin.
