Parkes observations for project P1071 semester 2020OCTS_02

Intermittent pulsars are a major topic of current pulsar research as they provide a direct link between studies of pulsar emission and irregularities in the rotation of the pulsars. The new Ultra-Wide-Low(UWL) receiver provides unprecedented frequency coverage and will allow us to study the emission properties of the intermittent pulsars in great detail. We request observations with the UWL receiver to intermittent pulsars. These are pulsars whose emission switches on and off at long intervals from days to years. We will determine the distribution and frequency dependence of the time scales, look for weak or bursty emission in the off states and determine the bandwidth of the on/off emission process, the spectral characteristics of the emission, the evolution of pulse energy distribution over wide-band and search for possible link between long- and short-term emission variability. These observations will provide insights into how these pulsars emit and how that emission is changing in time and as a function of frequency.

间歇性脉冲星（Intermittent pulsars）是当前脉冲星研究的核心课题，因其在脉冲星辐射研究与脉冲星自转不规则性之间建立了直接联系。新型超宽低频（Ultra-Wide-Low，UWL）接收器具备前所未有的频率覆盖范围，将使我们能够深入探究间歇性脉冲星的辐射特性。我们请求使用UWL接收器对间歇性脉冲星进行观测。这些脉冲星的辐射会以数天至数年的长间隔周期性开启和关闭。我们将测定时间尺度的分布及其频率依赖性，寻找关闭状态下的微弱或爆发性辐射，并确定开关辐射过程的带宽、辐射的光谱特征、宽带范围内脉冲能量分布的演化规律，以及探索长期与短期辐射变异性之间的潜在关联。这些观测将为理解此类脉冲星的辐射机制及其辐射随时间和频率的变化规律提供重要启示。