我院天体物理光学AGN团组在天文学期刊《A&A》上发表了题为“Evolution of broad emission lines from double-peaked to single-peaked to support a central tidal disruption event”的SCI文章。
在该项工作中,考虑到基于TDE事件中BLRs随时间的演化,导致外半径越来越大,从而理论上会在一定概率上,使得早期的宽发射线是双峰结构的,但是晚期的宽发射线是单峰结构的。基于模型预期的双峰到单峰的反转,我们在TDE事件AT2018hyz中找到了宽发射线谱型的转变实例,从而为证认中心TDE事件提出了一个额外的判据。

Fig.1 Left panel shows an example on the broad Hα with double-peaked profile (in blue) expected by the circular accretion disk plus spiral arms model with smaller outer radius, but with single-peaked profile (in red) expected by the model with larger outer radius. The right panels show distributions of the applied model parameters leading to double-peaked profiles changed to single-peaked.
中文题目:基于双峰宽线到单峰发射线的转变对TDE事件的支持
论文作者:张雪光(通信作者)
发表期刊:Astronomy & Astrophysics in press
文章链接:https://arxiv.org/abs/2505.15339