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Gamma-Ray Burst Afterglows In The Multi-Messenger Era: Numerical Models and Closure Relations

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arxiv 1909.11691 v1 pith:TY5AQ5AN submitted 2019-09-25 astro-ph.HE

Geoffrey Ryan , Hendrik van Eerten , Luigi Piro , Eleonora Troja This is my paper · ORCID
classification astro-ph.HE
keywords jetsmodelsrelationsafterglowafterglowsangleclosuregamma-ray
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Gamma-ray bursts (GRBs) associated with gravitational wave events are, and will likely continue to be, viewed at a larger inclination than GRBs without gravitational wave detections. As demonstrated by the afterglow of GW170817, this requires an extension of the common GRB afterglow models which typically assume emission from an on-axis top hat jet. We present a characterization of the afterglows arising from structured jets, providing a framework covering both successful and choked jets. We compute new closure relations for structured jets and compare with the established relations for energy injection and refreshed shock models. The temporal slope before the jet break is found to be a simple function of the ratio between the viewing angle and effective opening angle of the jet. A numerical model to calculate synthetic light curves and spectra is publicly available as the open source Python package afterglowpy.

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Cited by 11 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    nmma now jointly samples nuclear EoS parameters with GW and EM data via TOV emulators and Fiesta surrogates, delivering 20–60× speedups and future H0–nuclear constraints.

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