论文标题
PSR B1929+10中观察到的周期性和锁定调制
Periodic and Phase-locked Modulation in PSR B1929+10 Observed with FAST
论文作者
论文摘要
根据观察结果，我们提供了PSR B1929+10的详细单脉冲分析，该分析具有五百米的光圈球形射电望远镜（FAST）。发现主脉冲和插槽被调制，其周期性为$ \ sim12 $乘以Pulsar的旋转期（$ P $）。 $ \ sim12p $调制被确认为定期振幅调制，而不是系统的漂移。发现IP中的周期性振幅调制与MP（MP_I）的弱的前面组件中的抗相关性，但与MP（MP_II）的前两个组件相关，这意味着IP和MP中的调制模式在MP中是相锁的。更有趣的是，MP_II中的调制延迟了IP中的调制约1p。此外，通过快速观察的高灵敏度观察表明，MP和IP之间存在弱发射。此外，我们确认IP和MP之间的分离与射频无关。以上结果是脉冲星理论的难题，无法通过当前的脉冲星模型来满意。因此，我们在快速观察的结果提供了探测脉冲星发射结构和中子恒星磁层的结构的机会。
We present a detailed single-pulse analysis for PSR B1929+10 based on observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The main pulse and interpulse are found to be modulated with a periodicity of $\sim12$ times the pulsar's rotational period ($P$). The $\sim12P$ modulation is confirmed as a periodic amplitude modulation instead of systematic drifting. The periodic amplitude modulation in the IP is found to be anti-correlated with that in the weak preceding component of the MP (MP_I), but correlated with that in the first two components of the MP (MP_II), which implies that the modulation patterns in the IP and the MP are phase-locked. What is more interesting is that the modulation in MP_II is delayed that in the IP by about 1P. Furthermore, high sensitivity observations by FAST reveal that weak emission exists between the MP and the IP. In addition, we confirm that the separation between the IP and the MP is independent of radio frequency. The above results are a conundrum for pulsar theories and cannot be satisfactorily explained by the current pulsar models. Therefore, our results observed with FAST provide an opportunity to probe the structure of pulsar emission and the neutron star's magnetosphere.
