Galactic Cosmic-Ray Manganese: Ulysses High Energy Telescope Results

摘要

The Ulysses High Energy Telescope (HET) allows for a study of Galactic cosmic-ray manganese because of the telescope's excellent mass resolution and large collecting area. The manganese isotopes in the cosmic rays provide a means of studying the parameters of the cosmic-ray propagation in the Galaxy. Each of the isotopes probes a separate aspect of the propagation model. ~53Mn, a long-lived electron capture species, measures the time between the nucleosynthesis and acceleration of the cosmic rays. There is no evidence found for a source of ~53Mn, but sensitivity to this is limited.