Neutrino-driven explosions of ultra-stripped Type Ic supernovae generating binary neutron stars

作者：Suwa Yudai^*; Yoshida Takashi; Shibata Masaru; Umeda Hideyuki; Takahashi Koh

来源：Monthly Notices of the Royal Astronomical Society, 2015, 454(3): 3073-3081.

DOI：10.1093/mnras/stv2195

• binaries: close
• stars: evolution
• stars: massive
• stars: neutron
• supernovae: general
• supernovae: individual: SN 2005ek

We study explosion characteristics of ultra-stripped supernovae (SNe), which are candidates of SNe generating binary neutron stars (NSs). As a first step, we perform stellar evolutionary simulations of bare carbon-oxygen cores of mass from 1.45 to 2.0 M circle dot until the iron cores become unstable and start collapsing. We then perform axisymmetric hydrodynamics simulations with spectral neutrino transport using these stellar evolution outcomes as initial conditions. All models exhibit successful explosions driven by neutrino heating. The diagnostic explosion energy, ejecta mass, Ni mass, and NS mass are typically similar to 10(50) erg, similar to 0.1 M circle dot, similar to 0.01 M circle dot, and approximate to 1.3 M circle dot, which are compatible with observations of rapidly evolving and luminous transient such as SN 2005ek. We also find that the ultra-stripped SN is a candidate for producing the secondary low-mass NS in the observed compact binary NSs like PSR J0737-3039.

• 出版日期2015-12-11