publication . Article . Preprint . 2014

A solar super-flare as cause for the14C variation in AD 774/5?

Neuhaeuser, Ralph; Hambaryan, Valeri;
Open Access
  • Published: 13 Aug 2014 Journal: Astronomische Nachrichten, volume 335, pages 949-963 (issn: 0004-6337, Copyright policy)
  • Publisher: Wiley
Abstract
We present further considerations regarding the strong 14C variation in AD 774/5. For its cause, either a solar super-flare or a short Gamma-Ray Burst were suggested. We show that all kinds of stellar or neutron star flares would be too weak for the observed energy input at Earth in AD 774/5. Even though Maehara et al. (2012) present two super-flares with 10e35 erg of presumably solar-type stars, we would like to caution: These two stars are poorly studied and may well be close binaries, and/or having a M-type dwarf companion, and/or may be much younger and/or much more magnetic than the Sun - in any such case, they might not be true solar analog stars. From the...
Subjects
arXiv: Astrophysics::Solar and Stellar AstrophysicsPhysics::Space PhysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics::High Energy Astrophysical Phenomena
free text keywords: Solar flare, Neutron star, Astronomy, Physics, Flare, law.invention, law, Astrophysics, Cosmic ray, Solar analog, Stars, Maxima, Solar storm of 1859, Astrophysics - Solar and Stellar Astrophysics, Physics - History and Philosophy of Physics
Related Organizations
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publication . Article . Preprint . 2014

A solar super-flare as cause for the14C variation in AD 774/5?

Neuhaeuser, Ralph; Hambaryan, Valeri;