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
习惯了使用Windows 2000系统的朋友一定对ⅡS非常熟悉吧！它是系统附带的一个功能强大的组件，全名为因特网信息服务器(internet information server)．利用它可以实现WEB、FTP、SMTP等功能，很多网站的主机都采用ⅡS做为网站的发布后...习惯了使用Windows 2000系统的朋友一定对ⅡS非常熟悉吧！它是系统附带的一个功能强大的组件，全名为因特网信息服务器(internet information server)．利用它可以实现WEB、FTP、SMTP等功能，很多网站的主机都采用ⅡS做为网站的发布后台，可以说它是Windows NT系统中的灵魂。展开更多
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.
文摘习惯了使用Windows 2000系统的朋友一定对ⅡS非常熟悉吧！它是系统附带的一个功能强大的组件，全名为因特网信息服务器(internet information server)．利用它可以实现WEB、FTP、SMTP等功能，很多网站的主机都采用ⅡS做为网站的发布后台，可以说它是Windows NT系统中的灵魂。
