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arXiv · 1705.08188

Supernova Neutrino in a Strangeon Star Model

Mao Yuan·Jiguang Lu·Zhiliang Yang·Xiaoyu Lai·Renxin Xu
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Abstract

The neutrino burst detected during supernova SN1987A is explained in a strangeon star model, in which it is proposed that a pulsar-like compact object is composed of strangeons (strangeon: an abbreviation of "strange nucleon"). A nascent strangeon star's initial internal energy is calculated, with the inclusion of pion excitation (energy around 10^53 erg, comparable to the gravitational binding energy of a collapsed core). A liquid-solid phase transition at temperature ~ 1-2 MeV may occur only a few ten-seconds after core-collapse, and the thermal evolution of strangeon star is then modeled. It is found that the neutrino burst observed from SN 1987A could be re-produced in such a cooling model.

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Mao Yuan, Jiguang Lu, Zhiliang Yang, Xiaoyu Lai, Renxin Xu. 2017-05-23. Supernova Neutrino in a Strangeon Star Model. https://doi.org/10.1088/1674-4527%2F17%2F9%2F92

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