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Dissipation of Alfvén Waves in Relativistic Magnetospheres of Magnetars
Xinyu Li, Jonathan Zrake, Andrei M. Beloborodov
Magnetar flares excite strong Alfvén waves in the magnetosphere of the neutron star. The wave energy can (1) dissipate in the magnetosphere, (2) convert to "fast modes" and possibl…
Efficient Nonthermal Particle Acceleration by the Kink Instability in Relativistic Jets
E. Paulo Alves, Jonathan Zrake, Frederico Fiuza
Relativistic magnetized jets from active galaxies are among the most powerful cosmic accelerators, but their particle acceleration mechanisms remain a mystery. We present a new acc…
Sub-photospheric turbulence as a heating mechanism in gamma-ray bursts
Jonathan Zrake, Andrei M. Beloborodov, Christoffer Lundman
We examine the possible role of turbulence in feeding the emission of gamma-ray bursts (GRBs). Turbulence may develop in a GRB jet as the result of hydrodynamic or current-driven i…
Radio sky maps of the GRB 170817A afterglow from simulations
Jonathan Zrake, Xiaoyi Xie, Andrew MacFadyen
We present synthetic radio images of the GRB170817A afterglow, computed from moving-mesh hydrodynamic simulations of binary neutron star merger outflows. Having expanded for nearly…
A Decline in the X-ray through Radio Emission from GW170817 Continues to Support an Off-Axis Structured Jet
K. D. Alexander, R. Margutti, P. K. Blanchard +17
We present new observations of the binary neutron star merger GW170817 at days post-merger, at radio (Karl G. Jansky Very Large Array; VLA), X-ray (Chandra X-ra…
Numerical simulations of the jet dynamics and synchrotron radiation of binary neutron star merger event GW170817/GRB170817A
Xiaoyi Xie, Jonathan Zrake, Andrew MacFadyen
We present numerical simulations of energetic flows propagating through the debris cloud of a binary neutron star (BNS) merger. Starting from the scale of the central engine, we us…