We use EGS4 code to simulate the electron-gamma shower of high-energy electrons in a medium, optimize target thickness, and analyze positron distributions in phase space.

首先使用程序包EGS4 ，对高能电子在介质中的电磁级联过程进行了模拟，优化了靶厚度，讨论了影响打靶产额的因素。

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"If the sudden frequency change is neglected, then after only eight hours, a complete rotation of the pulsar is lost in our counting, and we can no longer determine at which rotational phase the gamma-ray photons reach the detector aboard Fermi, " Pletsch explained.

MSN: Oddball pulsating star hiccups as it spins