Fermi Gamma-ray Space Telescope Observations of Gamma-ray Pulsars
P. M. Saz Parkinson
备注:
To appear in the Proceedings of the 6th Workshop on Science with the New Generation of High Energy Gamma-Ray Experiments (SciNeGHE '08), held in Padova, 8-10 October 2008, Eds. D. Bastieri, R. Rando
The Large Area Telescope on the recently launched Fermi Gamma-ray Space Telescope (formerly GLAST), with its large field of view and effective area, combined with its excellent timing capabilities, is poised to revolutionize the field of gamma-ray astrophysics. The large improvement in sensitivity over EGRET is expected to result in the discovery of many new gamma-ray pulsars, which in turn should lead to fundamental advances in our understanding of pulsar physics and the role of neutron stars in the Galaxy. Almost immediately after launch, Fermi clearly detected all previously known gamma-ray pulsars and is producing high precision results on these. An extensive radio and X-ray timing campaign of known (primarily radio) pulsars is being carried out in order to facilitate the discovery of new gamma-ray pulsars. In addition, a highly efficient time-differencing technique is being used to conduct blind searches for radio-quiet pulsars, which has already resulted in new discoveries. I present some recent results from searches for pulsars carried out on Fermi data, both blind searches, and using contemporaneous timing of known radio pulsars.
Multi-wavelength studies of the gamma-ray pulsar PSR J1907+0602
PSR J1907+0602是一颗射电微弱、107 ms GeV伽马射线脉冲星,是费米LAT在一次盲脉冲星搜索中发现的。PSR J1907+0602位于明亮的扩展TeV伽马射线源MGRO J1908+06附近,可能是一个相关的脉冲星风星云。本文分析了该脉冲星的XMM-牛顿X射线数据和EVLA射电数据。我们探测到一个与伽玛射线脉冲星重合的微弱X射线源,并研究了它的光谱和时间特性。我们还发现边缘的证据弓形冲击的X射线图像。脉冲星没有检测到EVLA,我们推导出在多个频段的时间平均无线电通量的上限。