arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.04448astro-ph.HEastro-ph.GA
收藏

潮汐瓦解事件 AT 2023clx 的黑洞质量与光学辐射机制

Black hole mass and optical radiation mechanism of the tidal disruption event AT 2023clx

Shiyan Zhong, Xian Xu, Xinlei Chen, Helong Guo, Yuan Fang, Guowang Du, Xiangkun Liu, Xiaowei Liu

AI总结:

本文结合Mephisto、ASAS-SN和ATLAS多波段光变曲线,用MOSFiT拟合潮汐瓦解事件AT 2023clx,估计黑洞质量约为10^5.67–10^5.82倍太阳质量,并提出其光学辐射由流-流碰撞供能。

摘要:

我们展示了利用 Mephisto 观测到的潮汐瓦解事件(TDE)AT 2023clx 在下降阶段的光学光变曲线。将我们的光变曲线与 ASAS-SN 和 ATLAS 在上升阶段的数据相结合,并用 MOSFiT 拟合复合多波段光变曲线,我们估计 AT 2023clx 的黑洞质量介于 $10^{5.67}$--$10^{5.82}~M_{\odot}$ 之间。该事件可能由一颗 $0.1~M_{\odot}$ 恒星的完全瓦解或一颗 $0.99~M_{\odot}$ 恒星的部分瓦解引起,具体取决于上升阶段所采用的数据。基于这些拟合结果以及前 90 天内未探测到软 X 射线光子,我们提出观测到的光学辐射由流-流碰撞提供能量。我们推测,软 X 射线光子可能在光学峰值后 100--600 天内逐渐出现,届时碎片已完全圆化形成致密吸积盘。

英文摘要:

We present the optical light curves of the tidal disruption event (TDE) AT 2023clx in the declining phase, observed with Mephisto. Combining our light curve with the ASAS-SN and ATLAS data in the rising phase, and fitting the composite multi-band light curves with MOSFiT, we estimate black hole mass of AT 2023clx is between $10^{5.67}$--$10^{5.82}~M_{\odot}$. This event may be caused by either a full disruption of a $0.1~M_{\odot}$ star, or a partial disruption of a $0.99~M_{\odot}$ star, depending on the data adopted for the rising phase. Based on those fit results and the non-detection of soft X-ray photons in the first 90 days, we propose that the observed optical radiation is powered by stream-stream collision. We speculate that the soft X-ray photons may gradually emerge in 100--600 days after the optical peak, when the debris is fully circularized into a compact accretion disk.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑