activity
20202025
most citedSupernova Triggers for End-Devonian Extinctions

78 citations · 115 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.HE2025

Gamma rays as a signature of r-process producing supernovae: remnants and future Galactic explosions

Zhenghai Liu, Evan Grohs, Kelsey A. Lund +5

We consider the question of whether core-collapse supernovae (CCSNe) can produce rapid neutron capture process (r-process) elements and how future MeV gamma-ray observations could…

nucl-th2023

Thallium-208: a beacon of in situ neutron capture nucleosynthesis

Nicole Vassh, Xilu Wang, Maude Lariviere +7

We demonstrate that the well-known 2.6 MeV gamma-ray emission line from thallium-208 could serve as a real-time indicator of astrophysical heavy element production, with both rapid…

astro-ph.HE2023

Could a Kilonova Kill: a Threat Assessment

Haille M. L. Perkins, John Ellis, Brian D. Fields +5

Binary neutron star mergers (BNS) produce high-energy emissions from several physically different sources, including a gamma-ray burst (GRB) and its afterglow, a kilonova, and, at…

astro-ph.HE2021★ 9 cited

Proposed Lunar Measurements of -Process Radioisotopes to Distinguish Origin of Deep-sea 244Pu

Xilu Wang, Adam M. Clark, John Ellis +6

244Pu has recently been discovered in deep-sea deposits spanning the past 10 Myr, a period that includes two 60Fe pulses from nearby supernovae. 244Pu is among the heaviest -pro…

astro-ph.HE2021★ 28 cited

r-Process Radioisotopes from Near-Earth Supernovae and Kilonovae

Xilu Wang, Adam M. Clark, John Ellis +5

The astrophysical sites where r-process elements are synthesized remain mysterious: it is clear that neutron star mergers (kilonovae (KNe)) contribute, and some classes of core-col…

astro-ph.HE2020★ 78 cited

Supernova Triggers for End-Devonian Extinctions

Brian D. Fields, Adrian L. Melott, John Ellis +6

The Late Devonian was a protracted period of low speciation resulting in biodiversity decline, culminating in extinction events near the Devonian-Carboniferous boundary. Recent evi…