Greater number of scientists say that during the mid-Holocene around 7,000 years ago, our planet was heavily ‘bombarded’ by the intense flux of intense cosmic rays because the sun experienced a mysterious magnetic solar event.
Based on a new analysis of ancient tree in California, scientists discovered that abnormal solar even happened in around 5480 B.C. as experts measured the percent carbon 14th level in the tree of rings.
Although the exact cause of this mystery remains an enigma for scientists, there are those who believe that it can be activated by magnetic activity of our sun.
The team of scientists led by the University of Nagoya, analyze that carbon is 14th level long-lived pine forest in California.
It is known that these trees can live for thousands of years, which means that they are excellent guardians of solar events that directly affect our planet throughout history.
According to experts, the weakening of the activity of the sun, carbon-14 increases in the atmosphere. These “cosmic” change is registered by the trees, and found evidence that the trees are able to absorb carbon in the air.
According to AJ Timothy Jull of the University of Arizona:
“We measured the levels of carbon-14C in the sample of pine in three different laboratories in Japan, the US and Switzerland to ensure the accuracy of our results. We found a change in the 14C, which was more than any found previously, except for cosmic rays occurred in AD 775 and AD 994, and our use of annual data instead of data for each decade allow us to pinpoint exactly when it happened. ”
For a better understanding of the situation, the scientists compared the data with other events that have occurred in the last several thousand years.
Their results show that the sun may face “unknown phase of large solar minimum,” when solar activity will be VERY weak.
Another possibility is that the sun may have experienced strong solar bursts and fluctuations in solar magnetic activity.
However, scientists have yet to pin-point the exact cause. Experts hope that telescope observations of flares from other sun-like stars may help them understand what occurred with our sun thousands of years ago.
Fusa Miyake of Nagoya University said:
“Although this newly discovered event is more dramatic than others found to date, comparisons of the 14C data among them can help us to work out what happened to the sun at this time. We think that a change in the magnetic activity of the sun along with a series of strong solar bursts, or a very weak sun, may have caused the unusual tree ring data.”