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A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger
Science ( IF 44.7 ) Pub Date : 2018-06-14 , DOI: 10.1126/science.aao4669
S. Mattila 1, 2 , M. Pérez-Torres 3, 4 , A. Efstathiou 5 , P. Mimica 6 , M. Fraser 7, 8 , E. Kankare 9 , A. Alberdi 3 , M. Á. Aloy 6 , T. Heikkilä 1 , P. G. Jonker 10, 11 , P. Lundqvist 12 , I. Martí-Vidal 13 , W. P. S. Meikle 14 , C. Romero-Cañizales 15, 16 , S. J. Smartt 9 , S. Tsygankov 1 , E. Varenius 13, 17 , A. Alonso-Herrero 18 , M. Bondi 19 , C. Fransson 12 , R. Herrero-Illana 20 , T. Kangas 1, 21 , R. Kotak 1, 9 , N. Ramírez-Olivencia 3 , P. Väisänen 22, 23 , R. J. Beswick 17 , D. L. Clements 14 , R. Greimel 24 , J. Harmanen 1 , J. Kotilainen 1, 2 , K. Nandra 25 , T. Reynolds 1 , S. Ryder 26 , N. A. Walton 8 , K. Wiik 1 , G. Östlin 12
Affiliation  

An expanding radio jet from a destroyed star If a star gets too close to a supermassive black hole, it gets ripped apart in a tidal disruption event (TDE). Mattila et al. discovered a transient source in the merging galaxy pair Arp 299, which they interpret as a TDE. The optical light is hidden by dust, but the TDE generated copious infrared emission. Radio observations reveal that a relativistic jet was produced as material fell onto the black hole, with the jet expanding over several years. The results elucidate how jets form around supermassive black holes and suggest that many TDEs may be missed by optical surveys. Science, this issue p. 482 A relativistic radio jet is seen switching on after a star is ripped apart by a black hole. Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We have observed a transient source in the western nucleus of the merging galaxy pair Arp 299 that radiated >1.5 × 1052 erg at infrared and radio wavelengths but was not luminous at optical or x-ray wavelengths. We interpret this as a TDE with much of its emission reradiated at infrared wavelengths by dust. Efficient reprocessing by dense gas and dust may explain the difference between theoretical predictions and observed luminosities of TDEs. The radio observations resolve an expanding and decelerating jet, probing the jet formation and evolution around a SMBH.

中文翻译:

在星系合并中,一个被尘埃笼罩的潮汐破坏事件与一个已解决的无线电射流

一颗被摧毁的恒星发出的不断膨胀的射流如果一颗恒星离超大质量黑洞太近,它就会在潮汐破坏事件 (TDE) 中被撕裂。马蒂拉等人。在合并星系对 Arp 299 中发现了一个瞬态源,他们将其解释为 TDE。光学光被灰尘隐藏,但 TDE 产生了大量的红外辐射。无线电观测显示,当物质落入黑洞时,产生了相对论性喷流,喷流在几年内不断膨胀。结果阐明了喷射流是如何围绕超大质量黑洞形成的,并表明光学测量可能会遗漏许多 TDE。科学,这个问题 p。482 一颗恒星被黑洞撕裂后,相对论射流被打开。潮汐破坏事件 (TDE) 是恒星被超大质量黑洞 (SMBH) 的引力场撕裂时产生的瞬态耀斑。我们在合并星系对 Arp 299 的西部核中观察到一个瞬态源,它在红外线和无线电波长下辐射 >1.5 × 1052 erg,但在光学或 X 射线波长下不发光。我们将其解释为 TDE,其大部分辐射被灰尘以红外波长重新辐射。致密气体和尘埃的有效再处理可以解释理论预测与观察到的 TDE 光度之间的差异。无线电观测解决了一个正在膨胀和减速的喷流,探测了 SMBH 周围的喷流形成和演化。我们在合并星系对 Arp 299 的西部核中观察到一个瞬态源,它在红外线和无线电波长下辐射 >1.5 × 1052 erg,但在光学或 X 射线波长下不发光。我们将其解释为 TDE,其大部分辐射被灰尘以红外波长重新辐射。致密气体和尘埃的有效再处理可以解释理论预测与观察到的 TDE 光度之间的差异。无线电观测解析了一个正在膨胀和减速的喷流,探测了 SMBH 周围的喷流形成和演化。我们在合并星系对 Arp 299 的西部核中观察到一个瞬态源,它在红外线和无线电波长下辐射 >1.5 × 1052 erg,但在光学或 X 射线波长下不发光。我们将其解释为 TDE,其大部分辐射被灰尘以红外波长重新辐射。致密气体和尘埃的有效再处理可以解释理论预测与观察到的 TDE 光度之间的差异。无线电观测解决了一个正在膨胀和减速的喷流,探测了 SMBH 周围的喷流形成和演化。致密气体和尘埃的有效再处理可以解释理论预测与观察到的 TDE 光度之间的差异。无线电观测解决了一个正在膨胀和减速的喷流,探测了 SMBH 周围的喷流形成和演化。致密气体和尘埃的有效再处理可以解释理论预测与观察到的 TDE 光度之间的差异。无线电观测解决了一个正在膨胀和减速的喷流,探测了 SMBH 周围的喷流形成和演化。
更新日期:2018-06-14
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