科研之友
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摘要
The Shanghai Tian Ma Radio Telescope (TMRT) is a newly built fully steerable antenna with a diameter of 65 m. The frequency coverage of the TMRT ranges from 1.2 GHz to 50 GHz. Benefiting from its low-noise receivers and active surface, the sensitivity of the TMRT is very high, especially at relatively high frequencies. The digital backend system built at the TMRT well supports both the online folding and searching pulsar-observation modes. Meanwhile, the dispersion effect of the interstellar medium suffered by pulsar signals can also be removed with either the coherent or incoherent de-dispersion method, according to the demands of observers. A series of pulsar-related research projects have been arranged at the TMRT, such as long-term timing, high-frequency searching, radiation-process studying, and transient hunting. Most of these projects take advantage of the TMRT's high sensitivity at the corresponding frequency and try to avoid its disadvantages. More and more interesting pulsar research results with the TMRT are expected, based on the results obtained so far.
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