26 de agosto de 2021 to 3 de septiembre de 2021
Europe/Madrid timezone

Core-collapse simulation of SN 1987A binary progenitor and its multimessenger signals

1 sept. 2021 18:00
1h 30m
Poster High Energy Astrophysics, Cosmic Rays and Multimessenger Astronomy Poster session 2

Ponente

Ko Nakamura (Fukuoka University)

Descripción

We perform a three-dimensional self-consistent core-collapse supernova simulation using a binary evolution progenitor model of SN 1987A by Urushibara et al. (2018). This progenitor model is based on a slow-merger of 14 and 9 solar-mass stars and it satisfies most of the observational constraints such as red-to-blue evolution, lifetime, total mass and position in the Hertzsprung-Russell diagram at collapse, and chemical anomalies. We find that this progenitor model successfully present explosion and leave a 1.53 solar-mass neutron star with a kick velocity of 70 km/s and a spin period of 0.1 s. Assuming a detector sensitivity of Kamiokande-II and the distance to the supernova of 51 kpc, we obtain 16 neutrino detection events in one second. Some characteristic modes in its gravitational wave signal will also be discussed in our presentation.

Autor primario

Ko Nakamura (Fukuoka University)

Coautores

Dr. Tomoya Takiwaki (National Astronomical Observatory of Japan) Prof. Kei Kotake (Fukuoka University)

Materiales de la presentación

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