2019
DOI: 10.1088/1742-6596/1400/2/022034
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Isotopic imprint of the Solar system encounter with interstellar gas cloud around 660 BC (2610 BP)

Abstract: We analyse the long lived radionuclide data (14C, 10Be and 36Cl) in tree rings and Greenland ice cores referred to the 660 BC event. The hypotheses of solar superflare impact on the atmosphere and Solar system collision with small sized dense interstellar cloud are considered. Decisive role in clarifying the situation is the experimental data on other isotope content available in ice for the periods under discussion. The data on 10Be and 36Cl (GRIP and NGRIP stations in Greenland) during the 660 BC event favou… Show more

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“…[39] and Pavlov et al. [40] have suggested prolonged events like 660 BCE and 5480 BCE are the result of enhanced Galactic cosmic ray flux over several years after the heliosphere is compressed by dense clouds in the interstellar medium. Closer to home, Liu et al.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…[39] and Pavlov et al. [40] have suggested prolonged events like 660 BCE and 5480 BCE are the result of enhanced Galactic cosmic ray flux over several years after the heliosphere is compressed by dense clouds in the interstellar medium. Closer to home, Liu et al.…”
Section: Introductionmentioning
confidence: 99%
“…An alternative proposal considers a magnetar burst from a nearby magnetized neutron star [38], which is energetically plausible-but no sufficiently nearby or active neutron star is yet known from conventional astronomical observations. Pavlov et al [39] and Pavlov et al [40] have suggested prolonged events like 660 BCE and 5480 BCE are the result of enhanced Galactic cosmic ray flux over several years after the heliosphere is compressed by dense clouds in the interstellar medium. Closer to home, Liu et al [41] suggest the 14 C could be deposited into the atmosphere directly by a passing comet; this interpretation is rejected by Usoskin & Kovaltsov [42], who argue that such a comet would need to have been of a size ( 100 km) that would have devastated the Earth.…”
Section: Introductionmentioning
confidence: 99%