Long-term Evolution of a Supernova Remnant Hosting a Double Neutron Star Binary
Long-term Evolution of a Supernova Remnant Hosting a Double Neutron Star Binary
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DOI：
10.3847/1538-4357/ac67a4
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发表时间：
2022-04
期刊：
影响因子：
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通讯作者：
T. Matsuoka;Shiu-Hang Lee;K. Maeda;T. Takiwaki;T. Moriya
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作者：
T. Matsuoka;Shiu-Hang Lee;K. Maeda;T. Takiwaki;T. Moriya
超剥离超新星(USSN)是一种核心塌缩超新星爆炸，被认为是双中子星(DNS)双星的候选形成地点。我们研究了一个超新星超新星遗迹(USSNR)的动力学演化，它的中心应该有一个域名系统。通过使用前人建立的模型来解释前身双星的质量损失历史，我们构建了半径为100PC的星周介质的大尺度结构，并模拟了被这种环星介质环境包围的USSN的爆炸和随后的演化。我们发现CSM包括一个扩展的区域，其特征是一个温度为∼108K的热等离子体位于来自前身双星(∼10PC)的风的终止激波附近，并且USSNR冲击波在穿透这个热等离子体时被急剧减弱。来自年轻的USSNR的射电连续辐射足够明亮，如果它居住在我们的银河系，但与观测到的银河系超新星残骸(SNR)相比很弱，此后通过绝热冷却光度下降。在我们的参数空间内，与已知的银河系SNR相比，苏联通常表现出较低的射电光度和表面亮度。由于苏联的小事件率和相对较短的可观测寿命，我们计算出苏联只占∼总信噪比的0.1%-1%。这与到目前为止在银河系中还没有发现托管DNS双星的SNR这一事实相一致。
An ultra-stripped supernova (USSN) is a type of core-collapse supernova explosion proposed to be a candidate formation site of a double neutron star (DNS) binary. We investigate the dynamical evolution of an ultra-stripped supernova remnant (USSNR), which should host a DNS at its center. By accounting for the mass-loss history of the progenitor binary using a model developed by a previous study, we construct the large-scale structure of the circumstellar medium (CSM) up to a radius ∼100 pc, and simulate the explosion and subsequent evolution of a USSN surrounded by such a CSM environment. We find that the CSM encompasses an extended region characterized by a hot plasma with a temperature ∼108 K located around the termination shock of the wind from the progenitor binary (∼10 pc), and the USSNR blast wave is drastically weakened while penetrating through this hot plasma. Radio continuum emission from a young USSNR is sufficiently bright to be detectable if it inhabits our galaxy but faint compared to the observed Galactic supernova remnants (SNRs), and thereafter declines in luminosity through adiabatic cooling. Within our parameter space, USSNRs typically exhibit a low radio luminosity and surface brightness compared to the known Galactic SNRs. Due to the small event rate of USSNe and their relatively short observable life span, we calculate that USSNRs account for only ∼0.1%–1% of the total SNR population. This is consistent with the fact that no SNR hosting a DNS binary has been discovered in the Milky Way so far.