【摘要】 研究了动态球对称Vaidya时空的测地线方程和新坐标下的Vaidya时空背景的测地线方程,表明Vaidya时空的测地线方程在表观视界处出现奇点,而无法达到其事件视界处,而新坐标下的Vaidya时空的测地线方程可以达到比表观视界更远的事件视界处.所以,新坐标下的Vaidya时空的测地线方程比Vaidya时空的测地线方程优越.更多还原

【Abstract】 This paper studies the geodesic equations of the dynamic spherical symmetry Vaidya space-time and Vaidya space-time background in the new coordinate. It makes clear that the geodesic eqations of Vaidya space-time appear singularities on the apparent horizon,but they can not reach the event horizon.The geodesic eqations of vaidya space-time in the new coordinate can reach the event horizon farther than the apparent horizon. Therefore, the geodesic eqations of Vaidya space-time in the new coordinate are superior to the geodesic eqations of Vaidya space-time.更多还原