The rate of supernovae in our local Galactic neighbourhood within a distance of about 100
parsecs from Earth is estimated to be one every 2–4 million years, based on the total rate in …

Iron-60 (60Fe) is a radioactive isotope in cosmic rays that serves as a clock to infer an upper
limit on the time between nucleosynthesis and acceleration. We have used the ACE-CRIS …

Several searches have found evidence of ${}^{60}{\rm {Fe}} $ deposition, presumably from a
near-Earth supernova (SN), with concentrations that vary in different locations on Earth. This …

We consider the production and deposition on Earth of isotopes with half-lives in the range
10 5–10 8 yr that might provide signatures of nearby stellar explosions, extending previous …

A recently observed bump in the cosmic-ray (CR) spectrum from 0.3 to 30 TV is likely caused
by a stellar bow shock that reaccelerates preexisting CRs, which further propagate to the …

Motivated by recent measurements of deposits of 60 Fe on the ocean floor and the lunar
surface, we model the transport of dust grains containing 60 Fe from a near-Earth (ie, within …

The last two decades have brought spectacular advances in astrophysics of cosmic rays
(CRs) and space-and ground-based astronomy. Launches of missions that employ forefront …

This thesis is dedicated to computational micromagnetics, where several new numerical
methods are In this work a set of long-lived radionuclides is measured to detect supernova …

The lunar geological record is expected to contain a rich record of the galactic environment
of the Solar System, including records of nearby (ie less than a few tens of parsecs) …

Supernova explosions can eject large amounts of freshly synthesized matter into space and
even deposit such ejecta in Earth's geological reservoirs. In this work, a supernova signature …