Parkes observations for project P1207 semester 2024APRS_06

The question of whether there exists a substantial population of pulsars, particularly millisecond pulsars, within the Galactic Bulge, has been a longstanding enigma. In a recent survey conducted toward the Bulge region using the Five-hundred-meter Aperture Spherical Telescope (FAST), we discovered 12 pulsar candidates. Notably, four bright pulsar candidates, estimated to be located at distances greater than 3 kpc, are likely situated within the Bulge.Considering the scarcity of known pulsars in this region, the determination of spin and astrometric parameters of these pulsars can be important for us to understand the pulsar population in the Bulge. Such insights are crucial for investigating the origins of Gamma-ray emissions and delineating the electron density distribution within this area. Consequently, we propose to carry out timing observations for three bright candidate pulsars, each boasting a signal-to-noise ratio exceeding 20, including a millisecond pulsar.

银河系核球（Galactic Bulge）内是否存在大量脉冲星——尤其是毫秒脉冲星——这一问题长期以来一直是未解之谜。近期，我们利用五百米口径球面射电望远镜（Five-hundred-meter Aperture Spherical Telescope, FAST）对核球区域开展巡天观测，发现了12个脉冲星候选体。值得注意的是，其中4个亮候选体的估计距离超过3千秒差距（kpc），很可能位于核球内部。考虑到该区域已知脉冲星数量稀少，确定这些脉冲星的自旋与天体测量参数，对于理解核球内的脉冲星种群具有重要意义。此类见解对探究伽马射线发射起源、描绘该区域电子密度分布至关重要。因此，我们建议对3个信噪比（signal-to-noise ratio）超过20的亮候选脉冲星开展计时观测，其中包括一颗毫秒脉冲星。