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arXiv · 2009.07507

Neutron conversion-diffusion: a new model for structured short gamma-ray burst jets compatible with GRB 170817

Edwan Préau·Kunihito Ioka·Peter Mészáros
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Abstract

We present a generic theoretical model for the structuring of a relativistic jet propagating through the ejecta of a binary neutron star merger event, introducing the effects of the neutron conversion-diffusion, which provides a baryon flux propagating transversely from the ejecta towards the jet axis. This results naturally in an increased baryon load structure of the outer jet with the approximate isotropic energy distribution $E_{iso}(θ) \propto θ^{-4}$, which is compatible with the first gravitational wave and short gamma-ray burst event GW170817/GRB 170817A observed at an off-axis angle of the jet.

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Edwan Préau, Kunihito Ioka, Peter Mészáros. 2021-03-03. Neutron conversion-diffusion: a new model for structured short gamma-ray burst jets compatible with GRB 170817. https://doi.org/10.1093/mnras%2Fstab652

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