Cosmic rays showered Earth 1230 years ago, but
where from? Los Angeles Times, June 4, 2012
[www.latimes.com]

Mysterious radiation burst recorded in tree rings
(Spike in carbon-14 levels indicates a massive
cosmic event — but supernovae and solar flares
ruled out.) by Richard A. Lovett, June 2, 2012
Nature News, [www.nature.com]

Miyake, F., K. Nagaya, K. Masuda, and T.
Nakamura, 2012, A signature of cosmic-ray
increase in ad 774–775 from tree rings in
Japan. Nature. Published online June 3, 2012.
[www.nature.com]

I have access to the PDF file of this paper.

Best wishes,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)



Edited 1 time(s). Last edit at 06/07/2012 06:39AM by Paul H..