399 citations · 8.4k across the 106 of their papers we have counts for
Showing 1998Show all
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astro-ph1998
The Observational Signature of Old White Dwarfs
Brad M. S. Hansen
The recent discovery of microlensing of stars in the Large Magellanic Cloud has excited much interest in the nature of the lensing population. Detailed analyses indicate that the m…
astro-ph1998★ 14 cited
Gamma Ray Bursts from Stellar Collisions
Brad M. S. Hansen, Chigurupati Murali
We propose that the cosmological gamma ray bursts arise from the collapse of neutron stars to black holes triggered by collisions or mergers with main sequence stars. This scenario…
astro-ph1998★ 216 cited
Migrating Planets
Norm Murray, Brad Hansen, Matt Holman +1
A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals…