潮干扰事件中的相撞恒星流冲击的光学偏振
I Liodakis1, K I I Koljonen1,2,3, D Blinov4,5
1Finnish Center for Astronomy with the European Southern Observatory, University of Turku, FI-20014 Turku, Finland.
概括
我们研究了潮干扰事件 (TDE), 这种两极分化可能源于积累盘冲击,而不是相对论喷气,因为无线电观测是负的.
科学领域:
- 天文学与天体物理学
- 黑洞物理
- 观测宇宙学
背景情况:
- 潮破坏事件 (TDE) 涉及超大质量黑洞 (SMBH) 摧毁恒星.
- 从恒星碎片中形成的收缩盘可以发射相对论喷气.
- 了解TDE排放机制对于SMBH研究至关重要.
研究的目的:
- 调查TDE AT 2020mot的排放特性.
- 确定观察到的高光学偏振的来源.
- 在TDE中测试相对论喷气形成的假设.
主要方法:
- 对AT 2020mot进行了光学极度测量观测.
- 分析极化数据以测量线性极化程度.
- 在光学峰值后8个月进行无线电观测以寻找喷射辐射.
主要成果:
- 在光学光线中观察到25 ± 4%的峰值线性极化.
- 这种两极分化与同步辐射一致.
- 没有检测到相对论喷气的相应无线电发射.
结论:
- 高光极化可能源于增积盘冲击.
- 没有无线电辐射挑战了TDE的典型喷气模型.
- 收缩盘形成过程可能是TDE中极化光学辐射的原因.
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