Publications (4)
The AD775 cosmic event revisited: the Sun is to blame
I. G. Usoskin, B. Kromer, F. Ludlow +5
Miyake et al. (henceforth M12) recently reported, based on 14C data, an extreme cosmic event ca. AD775. Using a simple model, M12 claimed that the event was too strong to be caused…
Tunable dual-species Bose-Einstein condensates of K and Rb
L. Wacker, N. B. Jørgensen, D. Birkmose +6
We present the production of dual-species Bose-Einstein condensates of and . Preparation of both species in the $\left| F=1,m_F=-1 \right\rangle…
Solar cyclic activity over the last millennium reconstructed from annual 14C data
I. G. Usoskin, S. K. Solanki, N. Krivova +5
The 11-year solar cycle is the dominant pattern of solar activity reflecting the oscillatory dynamo mechanism in the Sun. Solar cycles were directly observed since 1700, while indi…
Measurement of plutonium isotopes, 239Pu and 240Pu, in air-filter samples from Seville (2001-2002)
E. Chamizo, M. GarcÃa-León, S. M. Enamorado +2
Since the last nuclear atmospheric test carried out by the People Republic of China in 1980 and since the Chernobyl accident in 1986, the plutonium hasn't been directly released in…