| Extragalactic H2O Megamaser Sources： Central Black Holes, Nuclear X-ray and Maser Emissions |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： |
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| 关 键 词： | 星系 活跃星系 天文学 星系内部结构 微波激射器 |
Extragalactic H2O Megamaser Sources:Central Black Holes,Nuclear X-ray and Maser Emissions |
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| Authors: | Jiang-Bo Su Jiang-Shui Zhang Jun-Hui Fan |
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| Institution: | Center for Astrophysics, Guangzhou University, Guangzhou 510006, China |
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| Abstract: | Extragalactic H2O megamasers are typically found within the innermost few parsecs of active galaxy nuclei (AGN) and the maser emission is considered to be excited most likely by the X-ray irradiation of the AGN.We investigate a comprehensive sample of extragalactic H2O masers in a sample of 38 maser host AGN to check potential correlations of the megamaser emission with parameters of the AGN,such as X-ray luminosity and black hole (BH) masses.We find a relation between the maser luminosities and BH masses,LH2O∝ M3.64-0.4 BH,which supports basically the theoretical prediction.The relation between the maser emission and X-ray emission is also confirmed. |
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| Keywords: | galaxies:active-galaxies:nuclei-masers |
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