Galactic bursts signature in Antarctica 10Be

• Main Author: Omerbashich, M
• Language: English
• Published: 2006
• Subjects: Other Fields of Physics; Taylor Dome; Antarc*; Antarctica; ice core
• Online Access: http://cds.cern.ch/record/1006822

I detected a very strong (25 %var) period of 3592+-57 years at 99% confidence level in the 10Be deposition rates from Vostok, Antarctica ice core raw (gapped, unaltered) data. The period was verified at 99% confidence level against the 10Be concentration raw data at both Vostok, as 3700+-57 years at very strong 38 %var, and Taylor Dome, Antarctica, as 3800+-61 years at very strong 23 %var. The noisy Mg concentration data from Taylor Dome also show an extremely strong (44 %var) period of 3965+-16 years. The Vostok data also show the Hallstadzeit Solar cycle, as 2296+-57 years at 12 %var, perhaps its best estimate yet. I use for all analyses the 99% confidence strict Gauss-Vanicek spectral analysis (GVSA) that estimates periods in incomplete records. Based on recent 500-parsec Galactic Center (GC) GeV/TeV Gamma ray surveys by the H.E.S.S. and INTEGRAL telescopes, the GC extremely active central region makes the best candidate host for bursts leaving the discovered signature. A previously reported 3600 years period in geomagnetic field declinations could support this conclusion by indicating that the discovered phase could perhaps overpower entire astronomical magnetic fields, even at distances close to GC-Earth. I also estimate using GVSA-specific features the epoch of the most recent 10Be maximum on Earth as 1085+-57 CE, coinciding with the 1054-1056 CE historical account by Asian astronomers of a sky explosion believed/disputed to mean the Crab supernova SN1054 event. I predict the next maximum raw 10Be on Earth in year 4463+-57 CE, indicating that the current climate change is not cosmogenic, thus allowing for the conventional (anthropogenic) view. I conclude that, if real, it may be possible for such recurring Galactic bursts to affect the Earth climate significantly.