18–19 Dec 2025
Yonsei University (Sinchon Campus)
Asia/Seoul timezone

A Bayesian View into Merger Jets: Multi-messenger Constraints from GW170817, GW190425, and Short GRB Observations

18 Dec 2025, 14:00
20m
Lee-Yun Jae Hall, B101 (Yonsei University (Sinchon Campus))

Lee-Yun Jae Hall, B101

Yonsei University (Sinchon Campus)

50, Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea Lee-Yun Jae Hall, Yonsei University, Sinchon campus

Speaker

En-Tzu Lin (National Tsing Hua University)

Description

The coincident observation of GW170817 and GRB170817A has provided unprecedented insight into the physical connection between binary neutron star mergers and short gamma-ray bursts. 
In this work, we perform a multi-messenger study with the aim of constraining the jet geometry of sGRBs, assuming that all BNS mergers produce relativistic jets. Our analysis incorporates gravitational-wave data from GW170817 and GW190425, together with the prompt and afterglow emission of GRB170817A. We also include the short-GRB detection rate from more than ten years of Swift monitoring to place constraints on the underlying BNS merger rate and jet structure.

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