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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
SiO and CH3OH mega-masers in NGC 1068
Nature Communications, Volume 5, Article 5449, Year 2014
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Description
Maser is an acronym for microwave amplification by stimulated emission of radiation; in astronomy mega-masers are masers in galaxies that are ≥10 6 times more luminous than typical galactic maser sources. Observational studies of mega-masers can help us to understand their origins and characteristics. More importantly, mega-masers can be used as diagnostic tracers to probe the physical properties of their parent galaxies. Since the late 1970s, only three types of molecules have been found to form mega-masers: H 2 O, OH and H 2 CO. Here we report the detection of both SiO and CH 3 OH mega-masers near the centre of Seyfert 2 galaxy NGC 1068 at millimetre wavelengths, obtained using the IRAM 30-m telescope. We argue that the SiO mega-maser originated from the nuclear disk and the CH 3 OH mega-maser originated from shock fronts. High-resolution observations in the future will enable us to investigate AGN feedback and determine the masses of central supermassive black holes in such galaxies. © 2014, Nature Publishing Group. All right reserved.
Authors & Co-Authors
Wang, Junzhi
China, Beijing
Chinese Academy of Sciences
China, Nanjing
Nanjing University
Zhang, Jiangshui
China, Guangzhou
Guangzhou University
Gao, Yu
China, Beijing
Chinese Academy of Sciences
Zhiyu Zhang, Zhiyu
United Kingdom, Edinburgh
The University of Edinburgh
Li, D. H.
China, Beijing
Chinese Academy of Sciences
United States, Boulder
Space Science Institute
Fang, Min
China, Beijing
Chinese Academy of Sciences
Statistics
Citations: 28
Authors: 6
Affiliations: 6
Identifiers
Doi:
10.1038/ncomms6449
ISSN:
20411723
Research Areas
Cancer
Environmental