Clue from nature AD 1055

California sequoia and Finnish pine: radiocarbon rise around 1054 to 1055 at both sites

Terrasi et al. 2020. A rise around 1054/55 larger than normal solar-cycle wobble at 2 sigma, seen at the same time in a sequoia and a pine on different continents. They list three possible causes: gamma rays from the Crab supernova of 1054, an unusually deep solar minimum, or a solar particle event. 'More data are needed.'

How it connects

This clue from nature supports this hunch The 1054 supernova, not the Sun, made the carbon-14 rise of 1053 to 1055

This clue from nature is a clue for 1052 carbon-14 candidate

This clue from nature is a clue for 1054 supernova

This clue from nature we read it in Terrasi et al. 2020, Can the 14C production in 1055 CE be affected by SN1054?, Radiocarbon 62(5)

This clue from nature came from this step Pulled the raw radiocarbon numbers