We present the optical light curves of the tidal disruption event 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 ...We present the optical light curves of the tidal disruption event 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 for AT 2023clx is between 10^(5.67)and 10^(5.82)M_(⊙).This event may be caused by either a full disruption of a 0.1M_(⊙)star,or a partial disruption of a 0.99M_(⊙) 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.展开更多
基金the South-Western Institute for Astronomy Research of Yunnan University(SWIFAR-YNU),funded by the“Yunnan University Development Plan for World-Class University”and“Yunnan University Development Plan for World-Class Astronomy Discipline.”The authors acknowledge support from the“Science&Technology Champion Project”(202005AB160002)from two“Team Projects”-the“Innovation Team”(202105AE160021)the“Top Team”(202305AT350002)'funded by the“Yunnan Revitalization Talent Support Program.”。
文摘We present the optical light curves of the tidal disruption event 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 for AT 2023clx is between 10^(5.67)and 10^(5.82)M_(⊙).This event may be caused by either a full disruption of a 0.1M_(⊙)star,or a partial disruption of a 0.99M_(⊙) 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.
