A Simulation Study Of Pulsar Observing Capability Of Large Radio Telescopes

This paper mainly introduced the project accomplished during my postgraduatestudy. These works present the simulation study of pulsar observing capability of largeradio telescopes.In chapter1, mainly reviewed the basic knowledge of distribution of pulsars. Espe-cially, introduced the detection results of pulsars of Parkes Multi-beam Pulsar Survey andthe distribution function proposed by Lorimer et al (2006) by using the detection resultsof Parkes Multi-beam Pulsar Survey. and also introduced the developments and surveyresults of major pulsar survey projects around the world.In chapter2, simulation of pulsar observing capability of large radio telescopes arereported. Parkes multi-beam pulsar survey has discovered1059normal pulsars and27millisecond pulsars. We frstly constructed samples of pulsars distributed in Galactic byusing Monte Carlo method according to the actual distribution and the pulsar parametermodel which proposed by Lorimer et al (2006). Then, we carry out simulation of the ob-servations by setting the observing parameters for a110m radio telescope (X110m) locatednear the Urumqi to study the performance of it in pulsar observations, and comparingthat with GBT. The infuence of the observing band, observation time, de-dispersionterminal parameters and survey region to the observing ability are investigated. Theoptimization of confguration of pulsar observing system is discussed. The results showthat, in common observable sky, pulsar search capability of X110m is about12%higherthan that of GBT. In the survey region|b|<15and60<l <60, and1100MHz1500MHz of observing frequency, X110m reach the highest pulsar search efciency. Thebest de-dispersion channel bandwidth is1.0MHz and0.1MHz for survey of normal pulsarsand millisecond pulsars respectively. Considering the time span of the survey projects,also the detection of extreme nulling pulsar and RRATs, a3600seconds of observing time for each beam is necessary.In chapter3, we carry out a simple study about pulsar observing capability of Fivehundred meter Aperture spherical Telescope (FAST).