基于FAST漂移扫描巡天的脉冲星统计观测和理论研究

The pulsar drift scanning survey data of fhe 500 meter Aperture Spherical radio Telescope(FAST) are of great significance to FAST scientific goal, pulsar physics and related astrophysics. With the survey data, this project first proposes to carry out research on statistics and classification of this data aiming at finding the new pulsar and pulsar phenomenon, thus to supplement and bulid Pulsar database included the FAST pulsar cadidate; then with the newly discovered pulsar and pulse phenomenon, we will utilize FAST and strive actively for the first-class astronomical observation equipment at home and abroad for multi-band observation and tracking timing observation thus to accumulate the corresponding pulsar observation data providing observation basis to the theoretical study of pulsar physics; Furthermore, with the large sample of pulsars and observation data accumulated by FAST pulsar survey, timing observation of observatory at home and abroad, this project discusses the formation and evolution of the pulsar, studies the pulsar radiation characteristics etc. with the annular gap model and ICS model thus to deepen & improve the pulsar evolution and radiation theory. Finally, the influence of the pulsar high-energy radiation on the positrons cosmic rays is studied further by utilizing the updated pulsar distribution and radiation theory so as to provide more precise theoretical constrains on the observation results of positron cosmic ray spectroscopy in order to clarify the cosmic rays positron physical mechanism and promote the development of pulsar astronomy and related astrophysics.

500米口径球面射电望远镜（FAST）脉冲星漂移扫描巡天数据对于FAST科学目标、脉冲星物理以及相关天体物理有重要的意义。本项目首先将配合FAST脉冲星漂移扫描巡天，开展脉冲星统计和分类处理研究，发现新的脉冲星和脉冲现象，构建更加完善的包含FAST脉冲星候选体的星标数据库；接着将就新发现的脉冲星和现象,利用FAST，并积极争取国际国内一流的天文观测设备，进行多波段计时观测，积累相应的脉冲星观测数据，为脉冲星及相关天体物理的理论研究提供观测基础；进一步，利用积累的大样本脉冲星及观测数据，讨论脉冲星形成及演化，发展并利用环间隙模型和ICS模型，研究脉冲星的辐射特性等问题，深化和完善脉冲星演化及辐射理论。最后，利用更新的脉冲星分布以及脉冲星辐射机制，研究脉冲星高能辐射对宇宙线正电子的影响，从而为宇宙线正电子谱的观测结果提供更精确的理论限制，推动脉冲星天文学和相关天体物理学的发展。

500米口径球面射电望远镜（FAST）脉冲星漂移扫描巡天数据对于FAST科学目标、脉冲星物理以及相关天体物理有重要的意义。本项目围绕FAST漂移扫描巡天数据，开展了脉冲星的数据库建设和脉冲星短时表及时观测统计分类和理论研究：首先，基于 FAST 脉冲星扫描巡天数据、建设了 FAST 观测数据贵州师范大学数据中心，在此基础上建立了基于FAST漂移扫描巡天的脉冲星星表数据库和脉冲星数据比对分析和可视化系统“PSRDB”；接着，开展了基于FAST漂移扫描巡天的脉冲星计时观测研究，发现了数百颗脉冲星并对新发现脉冲星样本开展参数统计分类；最后，开展了基于 FAST短时标计时观测脉冲星的理论研究，对脉冲星辐射性质尤其是单脉冲辐射性质进行了理论研究，发现了一些新的辐射现象并做出了理论解释和限制。本项目研究工作一方面为脉冲星研究提供了数据基础和丰富了脉冲星数量和种类，另一方面深化脉冲星物理提供了观测和理论基础。本项目的研究对于脉冲星物理和射电天文具有重要意义。