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arXiv · 1904.04440

Studying newborn neutron stars by the transient emission after stellar collapses and compact binary mergers

Yun-Wei Yu·Aming Chen·Zi-Gao Dai·Shao-Ze Li·Liang-Duan Liu·Jin-Ping Zhu
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Abstract

The formation of neutron stars (NSs), both from collapses of massive stars and mergers of compact objects, can be usually indicated by bright transients emitted from explosively-ejected material. In particular, if the newborn NSs can rotate at a millisecond period and have a sufficiently high magnetic field, then the spin-down of the NSs would provide a remarkable amount of energy to the emitting material. As a result, super-luminous supernovae could be produced in the massive stellar collapse cases, while some unusual fast evolving and luminous optical transients could arise from the cases of NS mergers and accretion-induced collapses of white dwarfs. In all cases, if the dipolar magnetic fields of the newborn NSs can be amplified to be as high as $10^{15}$ G, a relativistic jet could be launched and then a gamma-ray burst can be produced as the jet successfully breaks out from the surrounding nearly-isotropic ejected material.

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Yun-Wei Yu, Aming Chen, Zi-Gao Dai, Shao-Ze Li, Liang-Duan Liu, Jin-Ping Zhu. 2019-04-09. Studying newborn neutron stars by the transient emission after stellar collapses and compact binary mergers. https://doi.org/10.1063/1.5117814

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