Posted on 07/01/2012 9:22:00 AM PDT by SunkenCiv
According to an Old English manuscript chronicling the history of the Anglo-Saxons, a mysterious "red crucifix" appeared in the "heavens" over Britain one evening in A.D. 774. Now astronomers say it may have been the supernova explosion that sprinkled unexplained traces of carbon-14 in tree rings that year, halfway around the world in Japan.
Jonathon Allen, an undergraduate student at the University of California, Santa Cruz, made the connection this week after listening to a Nature podcast. He heard a team of Japanese scientists discussing new research in which they measured an odd spike in carbon-14 levels in tree rings from the year A.D. 774 or 775. They thought the spike must have come from a burst of high-energy radiation striking the upper atmosphere and triggering an increase in the rate of carbon-14 formation...
...Allen, a biochemistry major with an interest in history... came across an English translation of the Anglo-Saxon Chronicle, a history of England written in the ninth century, with this line in the entry for A.D. 774: "This year also appeared in the heavens a red crucifix, after sunset."
...The connection is plausible, according to Geza Gyuk, an astronomer at Chicago's Adler Planetarium in Illinois, who has used the Anglo-Saxon Chronicle to investigate past astronomical events...
The remains of a once-explosive supernova illuminate part of a nearby galaxy in this image taken by the Hubble Space Telescope. CREDIT: NASA/ESA/HEIC/Hubble Heritage Team
(Excerpt) Read more at livescience.com ...
I read something about this very theory at least a month ago. Was it something you posted or something on Phys.org I read?
It was on The Register in the UK on June 5th:
http://forums.theregister.co.uk/forum/1/2012/06/05/mysterious_energy_blast/
Look at the post by “Resound” at 5:52 GMT.
This guy beat Mr Allen’s podcast.
The Nature podcast was from June 7th. Mr. Allen is NOT the first person to find this.
http://www.nature.com/nature/podcast/index-2012-06-07.html
This guy should get out more.
Interesting, but rather slim evidence. I wonder if astronomers can pin-point a super nova appearance that year.
Nice find!
http://forums.theregister.co.uk/forum/1/2012/06/05/mysterious_energy_blast/
http://forums.theregister.co.uk/user/58453/
http://grimbeorn.blogspot.com/2012/06/anno-domini-774.html
http://avalon.law.yale.edu/medieval/ang08.asp
[snip] I read something about this very theory at least a month ago. Was it something you posted or something on Phys.org I read? [/snip]
There’s a post, somewhere on FR, that I read literally in the past couple of days, before I saw this “red crucifix” thing, someone could recall learning (years ago) about some kind of celestial phenom (comet, meteor/ite, supernova) that appeared to lead to the Black Death, I think it was. :’) Wish I knew where. Someone asked me in open thread if I knew what it was.
Yeah, I resemble that remark. For that matter, it’s the very basis for the success of the worldwide web...
[cyber noogies]
:’)
In 774 AD, the Sun blasted Earth with the biggest storm in 10,000 years
SyFy Wire ^
Posted on 1/8/2021, 12:45:48 PM by BenLurkin
Scientists found that the level of carbon-14, an isotope of carbon, was much higher in rings from that year than usual. Some years later, looking at air samples from ice cores, scientists saw that there were elevated levels of beryllium-10 and chlorine-36 as well.
The common factor in all these elements is that they are created when extremely high-energy subatomic particles hit Earth’s air and ground. .... The only way to get particles at energies like this is from space, where powerful magnetic fields in exploding stars...can accelerate the particles to such high speeds.
But the 774 event was so powerful that at first scientists were skeptical it could be from a flare. Once any other type of astronomical phenomenon was ruled out, though, a flare was all that was left
1989 the Sun erupted in a powerful series of flares as well as a huge coronal mass ejection (or CME) Carrying its own magnetic field, this bout of space weather slamme...
(Excerpt) Read more at syfy.com ...
https://freerepublic.com/focus/chat/3922944/posts
listed here:
https://freerepublic.com/focus/chat/4289190/posts?page=4#4
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