利用ATCA进行LUNASKA月球观测的现状报告和未来展望
Status Report and Future Prospects on LUNASKA Lunar Observations with ATCA
摘要：
LUNASKA（月球UHE中微子天体物理学与平方公里阵列）是一个理论和实验项目，为下一代巨型射电望远镜阵列开发月球切伦科夫技术。在这里，我们报告了一系列的观测与ATCA（澳大利亚望远镜紧凑阵列）。我们目前的观测使用了六个22米ATCA天线中的三个，带宽为600 MHz，频率为1.2-1.8 GHz，模拟去色散滤波器用于校正典型的夜间电离层色散，以及最先进的基于2 GHz FPGA的数字脉冲检测硬件。我们已经观察到，以最大限度地提高UHE中微子在银河系中心周围的区域和半人马座A的灵敏度，目前对最高能量中微子的限制相对较弱。
英文摘要：
LUNASKA (Lunar UHE Neutrino Astrophysics with the Square Kilometre Array) is a theoretical and experimental project developing the lunar Cherenkov technique for the next generation of giant radio-telescope arrays. Here we report on a series of observations with ATCA (the Australia Telescope Compact Array). Our current observations use three of the six 22m ATCA antennas with a 600 MHz bandwidth at 1.2-1.8 GHz, analogue dedispersion filters to correct for the typical night-time ionospheric dispersion, and state-of-the-art 2 GHz FPGA-based digital pulse detection hardware. We have observed so as to maximise the UHE neutrino sensitivity in the region surrounding the galactic centre and to Centaurus A, to which current limits on the highest-energy neutrinos are relatively weak.
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