Solar activity around AD 775 from aurorae and radiocarbon
نویسندگان
چکیده
منابع مشابه
Atmospheric impacts of the strongest known solar particle storm of 775 AD
Sporadic solar energetic particle (SEP) events affect the Earth's atmosphere and environment, in particular leading to depletion of the protective ozone layer in the Earth's atmosphere, and pose potential technological and even life hazards. The greatest SEP storm known for the last 11 millennia (the Holocene) occurred in 774-775 AD, serving as a likely worst-case scenario being 40-50 times str...
متن کاملRadiocarbon Dispersion around Canadian Nuclear Facilities
Canadian deuterium uranium (CANDU) pressurized heavy-water reactors produce 14C by neutron activation of trace quantities of nitrogen in annular gas and reactor components (14N(n,p)14C), and from 170 in the heavy water moderator by (170(n,a)14C). The radiocarbon produced in the moderator is removed on ion exchange resins incorporated in the water purification systems; however, a much smaller ga...
متن کاملOp-ijej130212 775..782
1 Department of Psychology, University of Minnesota, Minneapolis, MN USA, Department of Epidemiology, Institute of Public Health, University of Southern Denmark, Odense, Denmark, The Danish Twin Registry and Danish Ageing Research Centre, Institute of Public Health, University of Southern Denmark, Odense, Denmark Department of Clinical Genetics and Department of Clinical Biochemistry and Pharma...
متن کاملUranus’ aurorae past equinox
The aurorae of Uranus were recently detected in the far 2 ultraviolet with the Hubble Space Telescope (HST) pro3 viding a new, so far unique, means to remotely study the 4 asymmetric Uranian magnetosphere from Earth. We ana5 lyze here two new HST Uranus campaigns executed in Sept. 6 2012 and Nov. 2014 with different temporal coverage and 7 under variable solar wind conditions numerically predic...
متن کاملSearch for Saturn’s X-ray aurorae at the arrival of a solar wind shock
[1] After a decade of observations, evidence for X-ray auroral emission from Saturn has yet to be found. By analogy with processes known to take place on Jupiter, Saturnian X-ray aurorae may be expected to be powered by charge exchange (CX) between energetic ions and the planet’s atmospheric neutrals; if the ions are of solar origin, the emission should be brightest during episodes of enhanced ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2015
ISSN: 0004-6337
DOI: 10.1002/asna.201412160