论文标题
风扇束模型在孤立无线电脉冲星人群合成中的作用
Role of Fan Beam Model in Population Synthesis of Isolated Radio Pulsars
论文作者
论文摘要
根据PSRPOPPY软件包，我们通过将风扇梁模型（一种替代无线电发射光束模型融合到广泛使用的圆锥形束模型）来开发用于隔离无线电脉冲星的总体合成模型。通过正确选择相关的模型和参数，我们成功地复制了银河经度（$ L $）和纬度（$ b $），旋转期，周期衍生物，分散度和1.4-GHz磁通密度的观察性分布，该分布是由Parkes Multibeam和Swinberne pulsare pulsareys发现的1214个隔离脉冲。发现潜在的Radio-Loud Pulsars的数量为$ 2.27 \ times10^6 $，它比使用Conal Beam模型模拟的基本的Radio-Loud脉冲星人数大。该模型用于估计与五百米的光圈球形望远镜（快速）检测到的银河平面脉冲星调查检测到的分离无线电脉冲星的数量。预计将发现大约2700和240个新的隔离脉冲星（$ 20^{\ circ} <l <90^{\ circ} $，$ | b | b | <10^{\ circ} $）和外部银河系平面（$ 150^{$ 150^{\ circ} {\ circ} <l <2100^\ circ | <分别为10^{\ circ} $）。这些数字小于具有圆锥形束和快照模型的进化模型估计的数字。
On the basis of the PSRPOPPY software package, we developed an evolution model of population synthesis for isolated radio pulsars by incorporating the fan beam model, an alternative radio emission beam model to the widely used conal beam model. With proper choice of related models and parameters, we succesfully reproduced the observational distributions of Galactic longitude ($l$) and latitude ($b$), spin period, period derivative, dispersion measure and 1.4-GHz flux density for the 1214 isolated pulsars discovered by the Parkes multibeam and Swinburne pulsar surveys. The number of underlying population of radio-loud pulsars is found to be $2.27\times10^6$, which is larger than the underlying population of radio-loud pulsars simulated with conal beam model. The model is used to estimate the number of isolated radio pulsars detected by the Galactic-plane pulsar survey with Five hundred-metre Aperture Spherical Telescope (FAST). Approximately 2700 and 240 new isolated pulsars are expected to be discovered in the inner galactic plane ($20^{\circ} < l < 90^{\circ}$, $|b| < 10^{\circ}$) and the outer galactic plane ($150^{\circ} < l < 210^{\circ}$, $|b| < 10^{\circ}$), respectively. These numbers are smaller than those estimated by the evolution models with conal beam and the snapshot models.
