射电天文研究室知识库

利用乌鲁木齐25米望远镜在2004年3月份将近20天的数据,我们研究了PSR B0329+54在1.5GHz的模式变化。通过测量得出每个子积分轮廓前导成分和后随成分的相对强度的比值R的分布。结果发现,R的分布很好的符合高斯分布。我们统计了在这段观测中正常模式和反常模式的内禀持续时标分布,结果发现,正常模式和反常模式的时标分布均服从伽马分布,最佳时标参数分别为154.2分钟和31.5分钟。

The mode - switching phenomenon of PSR B0329 + 54 was studied by using the 20 days’data of March in 2004 by Urumqi 25 m radio telescope at 1540 MHz. The distributions of elative intensity between the leading and trailing component were measured for the individual profiles. It is found that the ratio follows Gauss distribution well. The intrinsic mode timescale distributions for normal and abnormal mode were also calculated with our data. The results show that both timescale distributions of normal and abnormal mode are according with Gamma distribution, where the best scales time parameters is 154.2 minutes for normal mode and 31.5 minutes for abnormal mode separately.