167 citations · 524 across the 13 of their papers we have counts for
13 papers
Time resolved 2 million year old supernova activity discovered in Earth's microfossil record
Peter Ludwig, Shawn Bishop, Ramon Egli +11
Massive stars, which terminate their evolution as core collapse supernovae, are theoretically predicted to eject more than 1E-5 solar masses of the radioisotope 60Fe. If such an ev…
Measurement of the stellar NiNi cross section with AMS
Peter Ludwig, Georg Rugel, Iris Dillmann +10
The NiNi cross section was measured with a combination of the activation technique and accelerator mass spectrometry (AMS). The neutron activations were performe…
The Link Between the Local Bubble and Radioisotopic Signatures on Earth
Jenny Feige, Dieter Breitschwerdt, Anton Wallner +15
Traces of 2-3 Myr old 60Fe were recently discovered in a manganese crust and in lunar samples. We have found that this signal is extended in time and is present in globally distrib…
New limit of Pu on Earth points to rarity of actinide nucleosynthesis
A. Wallner, T. Faestermann, J. Feige +9
Half of the heavy elements including all actinides are produced in r-process nucleosynthesis whose sites and history still remain a mystery. If continuously produced, the Interstel…
AMS measurements of cosmogenic and supernova-ejected radionuclides in deep-sea sediment cores
J. Feige, A. Wallner, L. K. Fifield +6
Samples of two deep-sea sediment cores from the Indian Ocean are analyzed with accelerator mass spectrometry (AMS) to search for traces of recent supernova activity around 2 Myr ag…
The Search for Supernova-produced Radionuclides in Terrestrial Deep-sea Archives
Jenny Feige, Anton Wallner, Stephan R. Winkler +5
An enhanced concentration of 60Fe was found in a deep ocean's crust in 2004 in a layer corresponding to an age of ~2 Myr. The confirmation of this signal in terrestrial archives as…