Galactic Nuclear Off-Centerings: the Innermost Accretion Mechanism?

Gaia Gaspar,Rubén Díaz,Damían Mast,María P. Agüero

Proceedings of the International Astronomical Union（2020）

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Abstract

Abstract In the current scenario of galaxy evolution, supermassive black holes (SMBH) are present in almost all galaxies. To trigger nuclear activity, large amounts of material have to fall from kpc to pc and even smaller scales. Hence, an efficient angular momentum removal mechanism is needed. A growing black hole could still not be fixed in the gravitational potential well of the galaxy. This can be observed as a break in the symmetry between the global structure of the galaxy and the central source and could be part of the mechanism that drives material from the last hundred parsecs onto accretion in the SMBH. We present spatial profile decomposition of 16 galaxies observed with GNIRS (Gemini North) in the K long band. We have been able to measure off-centerings in 3 of 16 galaxies. We found a possible correlation between the presence of an off-centering and the SMBH mass.

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【要点】：本文探讨了银河系中心黑洞偏心现象与超大质量黑洞吸积机制之间的关系，发现黑洞质量与偏心现象存在潜在关联。

【方法】：通过使用GNIRS (Gemini North)在K长波段对16个银河系进行空间分布分析，研究了星系中心黑洞的位置偏移。

【实验】：在16个星系中，测量出3个星系中心黑洞的偏心现象，并分析了这些数据，发现了偏心与SMBH质量之间的可能联系。