3 papers
astro-ph.SR2025
Distribution of Europium in The Milky Way Disk; Its Connection to Planetary Habitability and The Source of The R-Process
Evan M. Carrasco, Matthew Shetrone, Francis Nimmo +3
The energy provided in the radioactive decay of thorium (Th) and uranium (U) isotopes, embedded in planetary mantles, sustains geodynamics important for surface habitability such a…
astro-ph.SR2025
The Anomalous Acceleration of PSR J2043+1711: Long-Period Orbital Companion or Stellar Flyby?
Thomas Donlon, Sukanya Chakrabarti, Michael T. Lam +53
Based on the rate of change of its orbital period, PSR J2043+1711 has a substantial peculiar acceleration of 3.5 0.8 mm/s/yr, which deviates from the acceleration predicted b…
astro-ph.HE2025
Life in the Bubble: How a Nearby Supernova Left Ephemeral Footprints on the Cosmic-Ray Spectrum and Indelible Imprints on Life
Caitlyn Nojiri, Noémie Globus, Enrico Ramirez-Ruiz
The Earth sits inside a 300pc-wide void that was carved by a series of supernova explosions that went off tens of millions of years ago, pushing away interstellar gas and creating…