论文标题
超脱衣舞的无线电发射作为残余双中性恒星二进制物特性的诊断
Radio Emission from Ultra-stripped Supernovae as Diagnostics for Properties of the Remnant Double Neutron Star Binaries
论文作者
论文摘要
超脱落的超新星（SN）是氦或C+O星的爆炸，其外膜已被同伴中子星剥离。据信，双中性恒星（DNS）二进制爆炸后留下，该二进制会在爆炸后散发出来，后来在聚结处发出重力波。最近发现一些候选者对超脱落的SN的检测已限制了爆炸和祖细胞的特性，但是关于残余DNS二进制是否会在宇宙时代中合并的信息很少。通过二进制相互作用从氦气中剥离的大部分材料有望从系统中逃脱并形成偶然物质（CSM）。 CSM应通过与SN弹出碰撞引起的无线电发射来追踪。基于先前开发的恒星演化模型，我们计算了超脱落SNE的预期无线电亮度。我们发现，最大无线电发光度可以是DNS二进制的小分离的指标，从而导致其在宇宙时代的合并。我们的结果可用于优化无线电随访观察的策略，例如观察时期和频率。
An ultra-stripped supernova (SN) is an explosion of a helium or C+O star whose outer envelope has been stripped away by a companion neutron star. A double neutron star (DNS) binary is believed to be left after the explosion, which will emit the gravitational wave later at the coalescence. Recent detections of a few candidates for the ultra-stripped SN have constrained the properties of the explosion and the progenitor, but little information is given as to whether the remnant DNS binary will merge within the cosmic age. A large fraction of the material stripped away from the helium star through the binary interaction is expected to escape from the system and form circumstellar material (CSM). The CSM should be traced by radio emission induced by the collision with the SN ejecta. Based on the stellar evolution models previously developed, we calculate the expected radio luminosities from ultra-stripped SNe. We find that high radio luminosity at its maximum can be an indicator of small separation of a DNS binary leading to its merger within the cosmic age. Our results can be used to optimize the strategy for the radio follow-up observations such as observational epochs and frequencies.
