Study of highly variable XMMSL2 sources

We present the identifications of a flux-limited sample of highly variable X-ray sources on long time-scales from the second catalogue of the XMM-Newton SLew survey (XMMSL2)....我们报道了基于XMM-牛顿（XMM-Newton）摆扫巡天（SLew survey）第二星表（XMMSL2）所获得的一批长时标高变X射线源的流量限选样本的证认结果。