《因特网搜索专家》（Expert Internet Searching）是《因特网高级搜索者手册》（The Advanced Internet Searchers Handbook）的第四版，在新书中，作者Phil Bradley提出了一些能够正确快速有效搜索信息的更实用的工具，这些方法和工...《因特网搜索专家》（Expert Internet Searching）是《因特网高级搜索者手册》（The Advanced Internet Searchers Handbook）的第四版，在新书中，作者Phil Bradley提出了一些能够正确快速有效搜索信息的更实用的工具，这些方法和工具要比以前版本中提到的更多，展开更多
We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total...We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile,and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile,they are relatively narrow,with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656＋14 have different characteristics from both typical giant pulses and its regular pulses.展开更多
文摘《因特网搜索专家》（Expert Internet Searching）是《因特网高级搜索者手册》（The Advanced Internet Searchers Handbook）的第四版，在新书中，作者Phil Bradley提出了一些能够正确快速有效搜索信息的更实用的工具，这些方法和工具要比以前版本中提到的更多，
基金funded by the National Natural Science Foundation of China(Grant No.10973026)
文摘We report on the properties of strong pulses from PSR B0656＋14 by analyzing the data obtained using the Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010.In 44 h of observational data,a total of 67 pulses with signal-to-noise ratios above a 5σthreshold were detected.The peak flux densities of these pulses are 58 to 194 times that of the average profile,and their pulse energies are 3 to 68 times that of the average pulse.These pulses are clustered around phases about 5-ahead of the peak of the average profile.Compared with the width of the average profile,they are relatively narrow,with the full widths at half-maximum ranging from 0.28 ° to 1.78 °.The distribution of pulse-energies follows a lognormal distribution.These sporadic strong pulses detected from PSR B0656＋14 have different characteristics from both typical giant pulses and its regular pulses.
