Supernovae in binaries, runaway stars, neutron star kicks and kinematic ages

双星中的超新星、失控恒星、中子星踢和运动年龄

• 批准号: 349848303
• 负责人: Professor Dr. Ralph Neuhäuser
• 金额: --
• 依托单位: Astrophysikalisches Institut und Universitätssternwarte
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/349848303?language=en
• 关键词: Supernovae; binaries; runaway; stars; neutron

We will investigate the origin of neutron stars by tracing back their flight path to their place of origin in a supernova (SN). The SN location can be found either, when the past flight path crosses an OB association, and/or when a neutron star and a runaway star were at the same time at the same place, hence providing evidence for a SN in a binary releasing both stars. Furthermore, we will systematically search for runaway stars of any spectral type in SN remnants. We will study the dynamics and kinematics of SNe in binaries including the spin-kick alignment. The flight time of the neutron star, as kinematic age, is also a better age constraint than the characteristic spin-down age; the comparison of both enables us to derive the initial spin period and/or the braking index of the neutron star. We also search for new suitable neutron stars (mainly radio pulsars) with novel techniques such as joint imaging/timing observations with LEAP or MeerKAT.

我们将通过追踪中子星在超新星（SN）中起源的飞行路径来研究中子星的起源。当过去的飞行路径穿过OB关联时，或者当中子星和逃逸星同时在同一地点时，可以找到SN的位置，从而为释放两颗恒星的双星中存在SN提供证据。此外，我们将系统地在SN残骸中寻找任何光谱类型的逃逸恒星。我们将研究双星中SNe的动力学和运动学，包括自旋-踢对准。中子星的飞行时间作为运动年龄，也比特征自旋下降年龄具有更好的年龄约束；两者的比较使我们能够推导出中子星的初始自旋周期和/或制动指数。我们还利用新的技术，如与LEAP或MeerKAT联合成像/定时观测，寻找新的合适的中子星（主要是射电脉冲星）。