论文标题
紧凑型二进制合并产生的磁盘和弹出质量的估计值
Estimates for Disk and Ejecta Masses Produced in Compact Binary Mergers
论文作者
论文摘要
有不可抗拒的观察证据表明，至少有一个中子恒星的紧凑型物体的二进制系统是短伽马射线爆发的祖细胞，以及R过程元素的生产地点，至少在合并和积聚磁盘射出某些物体时。最近对引力波与电磁同行的观察结果助长了模型的需求，以预测给定合并的结果以及相关物质流出的特性随二进制的初始参数的函数。在此手稿中，我们提供更新的拟合配方，以估算黑孔中的二进制二个中性恒星二进制和弹出质量的磁盘质量，用于黑孔 - 中子恒星和双中性恒星二进制组，适合数值模拟的结果。我们提出的拟合公式通过旨在通过涵盖更大的参数空间区域以及考虑数值仿真不涵盖的参数空间区域，而是通过物理上明显的合并结果来改善现有模型。
There is irresistible observational evidence that binary systems of compact objects with at least one neutron star are progenitors of short gamma-ray bursts, as well as a production site for r-process elements, at least when some matter is ejected by the merger and an accretion disk is formed. The recent observations of gravitational waves in conjunction with electromagnetic counterparts fuel the need for models predicting the outcome of a given merger and the properties of the associated matter outflows as a function of the initial parameters of the binary. In this manuscript, we provide updated fitting formulae that estimate the disk mass for double neutron star binaries and ejecta masses for black hole-neutron star and double neutron star binaries, fitted to the results of numerical simulations. Our proposed fitting formulae improve on existing models by aiming for analytical simplicity, by covering a larger region of parameter space, and by accounting for regions of parameter space not covered by numerical simulations but with physically manifest merger outcomes.
