Low Frequency Pulsar and Interstellar-Medium Research at the Pushchino Radio Astronomy Observatory

脉冲星的密度和自转速度几乎令人难以置信，脉冲星提供了一个测试熟悉的物理理论的机会，以查看它们在极端情况下是否仍然有效。来自脉冲星的无线电信号在每个波段都有不同的特征，因为辐射是在一系列径向距离上发射的。高频辐射似乎起源于离脉冲星表面非常近的地方，而低频辐射则产生在大约100公里的距离处。通过研究低频辐射，我们获得了脉冲星与周围环境相互作用的重要数据。在该奖项颁发过程中，将与一些俄罗斯天文学家合作研究选定的低频率脉冲星。普希诺射电天文台是目前可用的为数不多的低频设施之一。请求为美国天文学家访问俄罗斯和俄罗斯天文学家访问美国以及一些设备升级提供支持。美国的两个合作伙伴在这次合作中已经有了很长的经验。这些观测对时间至关重要，因为这些低频的人为无线电干扰正在迅速增加，在不久的将来可能会变得非常困难。***

Rankin, Joanna"Low Frequency Pulsar and Interstellar-Medium Research at the Pushchino Radio Astronomy Observatory".AST-0098685With their almost incredibly high densities and rapid rotations, pulsars provide an opportunity to test familiar physical theories in order to see if they remain valid at extremes. Radio signals from pulsars have a different character in each waveband because the radiation is being emitted over a range of radial distances. High-frequency emission appears to originate very close to the pulsar surface while low-frequency radiation is generated at a distance of about 100 km. By studying the low-frequency radiation we obtain vital data about the way the pulsar is interacting with its surroundings. During the course of this award, collaborative research will be carried out with a number of Russian astronomers in a study of selected pulsars at low frequency. The Pushchino Radio Astronomy Observatory is one of the few low-frequency facilities currently available. Support is requested for visits of US astronomers to Russia and of Russian astronomers to the US as well as for some equipment upgrades. Two of the American Co-PIs have already had lengthy experience in this collaboration. The observations are time-critical because man-made radio interference at these low frequencies is increasing rapidly and may become very difficult to make in the near future. ***