Black hole mass and optical radiation mechanism of the tidal disruption event AT 2023clx
| Autor: | Zhong, Shiyan, Xu, Xian, Chen, Xinlei, Guo, Helong, Fang, Yuan, Du, Guowang, Liu, Xiangkun, Liu, Xiaowei |
|---|---|
| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | 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. Comment: 15 pages, 3 figures, accepted for publication in Research in Astronomy and Astrophysics |
| Databáze: | arXiv |
| Externí odkaz: |
|