论文标题
Meerkat II上的千幽默阵列计划：通过子阵列观察Pulsar监测的策略
The Thousand-Pulsar-Array programme on MeerKAT II: observing strategy for pulsar monitoring with subarrays
论文作者
论文摘要
千脉冲阵列（TPA）项目目前通过使用子阵列同时观察多个来源，以敏感的Meerkat射电望远镜监视约500个Pulsars。在这里，我们定义了所采用的观察策略，该策略可以确保观察到每个目标的时间足够长以获得高保真脉冲曲线，从而达到了简单的脉冲形状参数的足够精确度。从望远镜的系统噪声的贡献以及每个脉冲星的脉冲对脉冲变异性中估计，我们在一些简化的假设下进行了量化。我们使用Meerkat 64-Dish阵列，Lovell和Parkes望远镜的数据测试模型参数的假设和选择。我们证明，从我们的方法得出的观察时间产生了满足TPA在研究脉冲形状变异性和PULSAR时序需求的高忠诚度脉冲曲线。我们的方法还可以用于比较观察大量脉冲星的策略，并与能够形成多个子阵列配置的望远镜进行比较。我们发现，使用两个32-Dish Meerkat子阵列是TPA项目最有效的策略。我们还发现，在不同阵列配置中观察的能力对于使用平方公里阵列望远镜进行大型观察程序将变得越来越重要。
The Thousand Pulsar Array (TPA) project currently monitors about 500 pulsars with the sensitive MeerKAT radio telescope by using subarrays to observe multiple sources simultaneously. Here we define the adopted observing strategy, which guarantees that each target is observed long enough to obtain a high fidelity pulse profile, thereby reaching a sufficient precision of a simple pulse shape parameter. This precision is estimated from the contribution of the system noise of the telescope, and the pulse-to-pulse variability of each pulsar, which we quantify under some simplifying assumptions. We test the assumptions and choice of model parameters using data from the MeerKAT 64-dish array, Lovell and Parkes telescopes. We demonstrate that the observing times derived from our method produce high fidelity pulse profiles that meet the needs of the TPA in studying pulse shape variability and pulsar timing. Our method can also be used to compare strategies for observing large numbers of pulsars with telescopes capable of forming multiple subarray configurations. We find that using two 32-dish MeerKAT subarrays is the most efficient strategy for the TPA project. We also find that the ability to observe in different array configurations will become increasingly important for large observing programmes using the Square Kilometre Array telescope.
