7 papers
Revisiting the Rheology of Neutron Star Crusts with Molecular Dynamics
Matthew E Caplan, Ashley Bransgrove
Explosive events from magnetars are likely due to the catastrophic release of stress in their crusts, but the behavior of crustal matter beyond linear elasticity is poorly understo…
Hyperactive Magnetar Eruptions: Giant Flares, Baryon Ejections, and Fast Radio Bursts
Ashley Bransgrove, Andrei M. Beloborodov, Yuri Levin
Young neutron stars born with magnetic fields G become hyperactive as the field inside the star evolves through ambipolar diffusion on a timescale s.…
Linear Mode Conversion in Ultramagnetized Pair Plasmas: Single-Parameter Scaling
Dawei Dai, Ashley Bransgrove, Anirudh Prabhu +1
In neutron star (NS) magnetospheres, plasma waves propagate as normal modes with distinct propagation dynamics that strongly influence observable signals. This letter presents a un…
Magnetic reconnection with a 0.1 rate: Effective resistivity in general relativistic magnetohydrodynamics
B. Ripperda, M. P. Grehan, A. Moran +5
Relativistic magnetic reconnection is thought to power various multi-wavelength emission signatures from neutron stars and black holes. Relativistic resistive magnetohydrodynamics…
Grain Boundary Diffusion in Yukawa Crystals
Matthew E. Caplan, Nevin T. Smith, Dany Yaacoub +3
We present calculations of diffusion coefficients in grain boundaries in Yukawa crystals for astrophysics. Our methods follow from our recent work calculating diffusion coefficient…
Crustal Quakes Spark Magnetospheric Blasts: Imprints of Realistic Magnetar Crust Oscillations on the Fast Radio Burst Signal
Louis Burnaz, Elias R. Most, Ashley Bransgrove
Many transients believed to originate from magnetars are thought to be triggered by crustal activity, which feeds back on the surrounding magnetosphere. These perturbations, throug…