[meteorite-list] Mysterious radiation burst recorded in tree rings (774–775 AD)

From: Paul H. <oxytropidoceras_at_meteoritecentral.com>
Date: Thu, 7 Jun 2012 6:38:00 -0500
Message-ID: <20120607073800.QG1J8.1189752.imail_at_eastrmwml303>

Cosmic rays showered Earth 1230 years ago, but
where from? Los Angeles Times, June 4, 2012
http://www.latimes.com/news/science/sciencenow/la-sci-sn-cosmic-ray-increase-20120604,0,6401794.story?track=rss

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
http://www.nature.com/news/mysterious-radiation-burst-recorded-in-tree-rings-1.10768

The paper is:

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.
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature11123.html

Best wishes,

Paul H.
Received on Thu 07 Jun 2012 07:38:00 AM PDT