论文标题
两个灾难变量的轨道周期突然变化的证据
Evidence of abrupt changes in the orbital periods of two cataclysmic variables
论文作者
论文摘要
我们报告了Eclipse时机的证据，表明两个显然正常的灾难性变量在其轨道时期发生了突然的变化。 HS 2325+8205的轨道周期在2011年2月1日左右增加了22.15毫秒（轨道时期的1.3 x 10-6），EP DRA的轨道时期增加了4.51毫秒（轨道时期的7.2 x 10-7），在2001年12月7日左右，这均没有任何明显的变化。这些更改目前无法解释。
We report evidence from eclipse timing that two otherwise apparently normal cataclysmic variables have experienced abrupt changes in their orbital periods. The orbital period of HS 2325+8205 increased by 22.15 msec (1.3 x 10-6 of the orbital period) around 1 February 2011 and the orbital period of EP Dra increased by 4.51 msec (7.2 x 10-7 of the orbital period) around 7 December 2001. In neither case was there any apparent change in the subsequent behaviour of the system. These changes are currently unexplained.
